{"title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eNamed after their classic locality in Herkimer County, New York, Herkimer Diamonds are exceptional double terminated quartz crystals renowned for their natural clarity and brilliant luster. Formed over 300 million years ago, these crystals often showcase superb transparency, crisp edges, and striking aesthetics. From pristine singles to museum-grade clusters, this gallery highlights specimens reflecting the best qualities that collectors seek in Herkimer Diamonds.\u003c\/p\u003e","products":[{"product_id":"excellent-herkimer-diamond-with-excellent-clarity-genuine-new-york-herkimer-diamond-quartz-21-mm","title":"Herkimer Diamond (Quartz Variety)","description":"\u003cp\u003eAmazing, water-clear, Herkimer Diamond specimen. This crystal is of exceptional clarity and quality for a Herkimer Diamond of its size, making it the perfect addition to a high-end mineral collection. Several contact indentations (shown in photos) show where it grew in contact with the host rock, the Little Falls dolostone. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51235992142097,"sku":"hk821","price":260.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Herkimer-Diamond-Quartz-Variety-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated.jpg?v=1783482917"},{"product_id":"excellent-water-clear-herkimer-diamond-specimen-natural-double-terminated-quartz-from-herkimer-county-new-york-22-mm","title":"Herkimer Diamond (Quartz Variety)","description":"\u003cp\u003eBeautiful Herkimer Diamond specimen featuring impressive clarity, excellent glassy luster, and contact indentations showing where the crystal grew in contact with the host rock. Internal voids, also known as negative inclusions, can be seen within the glassy faces of the crystal. \u003c\/p\u003e\n\u003cp\u003eWeight: 5.75 grams \u003c\/p\u003e\n\u003cp\u003eHerkimer Diamonds formed over 300 million years ago through natural earth processes. \"Herkimer Diamonds\" are naturally formed quartz crystals that were given the nickname \"Herkimer Diamonds\" because they are from Herkimer County, New York and their natural appearance resembles a cut diamond. This crystal has the characteristic dual terminations and clarity that Herkimer Diamonds are known for worldwide. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51235994763537,"sku":"hk813","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Herkimer-Diamond-Quartz-Variety-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_112fd669.jpg?v=1783482939"},{"product_id":"gorgeous-water-clear-herkimer-diamond-raw-crystal-from-new-york-19-mm","title":"Herkimer Diamond (Quartz Variety)","description":"\u003cp\u003eGorgeous, high-grade Herkimer Diamond with excellent clarity. This lovely raw gemstone features exceptional brilliance and clarity, interesting internal details, and small contact imprints showing where it grew in contact with the host rock, the Little Falls Dolostone. A beautiful, water-clear Herkimer Diamond that would make a great jewelry piece.\u003c\/p\u003e\n\u003cp\u003eWeight: 2.77 grams \u003c\/p\u003e\n\u003cp\u003eHerkimer Diamonds formed over 300 million years ago through natural earth processes. \"Herkimer Diamonds\" are naturally formed quartz crystals that were given the nickname \"Herkimer Diamonds\" because they are from Herkimer County, New York and their natural appearance resembles a cut diamond. This crystal has the characteristic clarity and dual terminations that Herkimer Diamonds are known for worldwide. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51235995877649,"sku":"hk795","price":100.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Herkimer-Diamond-Quartz-Variety-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_013c6719.jpg?v=1783482986"},{"product_id":"herkimer-diamond-cluster-with-champagne-hue-and-anthraxolite-inclusions-23-mm-smoky-double-terminated-quartz-from-herkimer-county-ny","title":"Herkimer Diamond (Quartz Variety)","description":"\u003cp\u003eStunning smoky-champagne Herkimer Diamond cluster with excellent crystal form, clarity, and coloration. A great collection piece featuring flecks of black anthraxolite, sharp edges, and intricate internal details. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51235996238097,"sku":"hk(e)711","price":75.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Herkimer-Diamond-Quartz-Variety-elusive-middleville-mine-new-york-usa-authentic-mineral-specimens.jpg?v=1783502403"},{"product_id":"huge-herkimer-diamond-cluster-with-excellent-clarity-and-subtle-smokey-hue-from-herkimer-county-new-york-reconstructed-cluster-348-grams","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eExceptional specimen of New York's iconic quartz var. \"Herkimer Diamond.\" An exemplary piece due to the level of clarity for its size, as well as attractive arrangement of crystals and subtle champagne hue. Can be displayed in several different ways, either situated upright for display in a mineral cabinet or laying flat. Contact imprints can be seen along one side of the specimen, showing where this impressive cluster grew in contact with the host rock, the Little Falls Dolostone. There are some inconsequential flaws along edges or surfaces, all of which can be seen in photos and video. with Herkimer Diamond of this size. The largest crystal measures 7.8 centimeters from point to point, see full dimensions below. This is a reconstructed Herkimer Diamond cluster, meaning that it has had the two main crystals reattached along the natural contact with Jeweler's Epoxy 330. Contacts between crystals are natural planes of weakness, which makes clusters prone to separation while still in the earth. As with most large Herkimer Diamond clusters, these two crystals were found together and reconnected using Epoxy 330.\u003c\/p\u003e\n\u003cp\u003eHerkimer Diamonds are naturally occurring quartz crystals, formed over 300 million years ago through the Earth's natural processes. These beautiful crystals earned the name \"Herkimer Diamonds\" due to their striking resemblance to cut diamonds and their location in Herkimer County, New York. Unlike traditional diamonds, Herkimer Diamonds form naturally with exceptional clarity and flat faces, making them a true marvel of nature.\u003c\/p\u003e\n\u003cp\u003eWeight: 348 grams  \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51236003938577,"sku":"hk(e)759-g","price":1125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-elusive-middleville-mine-new-york-usa-authentic-mineral-specimens.jpg?v=1783502413"},{"product_id":"herkimer-diamond-quartz-variety-copy","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eAn absolutely stunning Herkimer Diamond specimen with excellent clarity, large glassy faces, and beautiful double terminations. At a weight of nearly 9 grams, and measuring 29 mm from point to point, this raw crystal is of exceptional quality and clarity for its size. Contact marks show where the crystal grew perched against the host rock, and small geometric imprints show where neighboring crystals once grew. A few internal voids, also known as negative inclusions, can be seen within the crystal.\u003c\/p\u003e\n\u003cp\u003eHerkimer Diamonds formed over 300 million years ago through natural earth processes. \"Herkimer Diamonds\" are naturally formed quartz crystals that were given the nickname \"Herkimer Diamonds\" because they are from Herkimer County, New York and their natural appearance resembles a cut diamond. This crystal has the characteristic clarity and dual terminations that Herkimer Diamonds are known for worldwide. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263022268689,"sku":"hk797","price":445.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated.jpg?v=1783483023"},{"product_id":"herkimer-diamond-quartz-variety","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eA stunning Herkimer Diamond with exceptional clarity for its size. A gemmy raw crystal with a beautiful shape, brilliant luster, and lovely flat faces. Small contact indentations show where the crystal grew in contact with the host rock. Well exemplifies the famous New York variety of quartz: Herkimer Diamonds.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263940165905,"sku":"hk769","price":182.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_addd5338.jpg?v=1783483050"},{"product_id":"herkimer-diamond-quartz-variety-1","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eAn absolutely stunning Herkimer Diamond specimen with jet-black hydrocarbon inclusions and a partially embedded smaller Herkimer Diamond (best seen at top of crystal in photo 2). This stunning piece was collected by my dad and I in October 2024. It was in a clay filled vug, and was so clear we almost didn't see it. A favorite find from that mining trip, as I am a huge fan of Herkimer Diamonds with smaller herks inside of them. 3.59 grams.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263946916113,"sku":"hk762","price":135.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_819c2232.jpg?v=1783483086"},{"product_id":"herkimer-diamond-quartz-variety-2","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eAmazing, water-clear, Herkimer Diamond specimen. This crystal is of exceptional clarity and quality for a Herkimer Diamond of its size, making it the perfect addition to a high-end mineral collection. A single inclusion of black pyrobitumen sits encased within the crystal. Several contact indentations (shown in photos) show where it grew in contact with the host rock, the Little Falls dolostone. Collected October 2024. Weights 4.13 grams.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263952290065,"sku":"hk778","price":250.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_9d2c7491.jpg?v=1783483133"},{"product_id":"herkimer-diamond-quartz-variety-3","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eBeautiful high-grade Herkimer Diamond. This nearly-flawless little gem features exceptional brilliance and clarity, sharp edges, and a couple small geometric footprints.  A beautiful, water-clear Herkimer Diamond that would make a great jewelry piece. Collected the summer of 2024. 0.58 grams.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263969460497,"sku":"hk804","price":22.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_8cc3a290.jpg?v=1783483204"},{"product_id":"herkimer-diamond-quartz-variety-4","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eImpressive, water-clear, Herkimer Diamond with beautiful shape and glassy luster. A beautiful crystal featuring excellent clarity and luster, a smaller \"rider\" Herkimer Diamond along one side, and dolostone indentations showing where the crystal grew in contact with the host rock. Collected April 2024. 2.55 grams.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263975096593,"sku":"hk627","price":105.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_a881837d.jpg?v=1783483263"},{"product_id":"herkimer-diamond-quartz-variety-5","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eExcellent Herkimer Diamond. A completely natural crystal with exceptional clarity, fantastic luster, and sharp edges. The brilliance and gemminess of this raw crystal make it especially eye catching, perfect for jewelry or a high-end collection. Small contact indentations show where the crystal grew in contact with the host rock. Collected spring of 2024. Weighs 2.79 grams.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51263979618577,"sku":"hk697","price":135.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_4a86f516.jpg?v=1783483334"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1858mineral","title":"Quartz Var. Herkimer Diamond","description":"A superb Herkimer diamond cluster with exceptional clarity and a subtle smoky-champagne hue, resulting from disseminated pyrobitumen (anthraxolite) inclusions. The main crystal is sharp, equant, and is accompanied by two smaller Herkimer diamonds aesthetically perched along one side. At 31 mm and over 17 grams, this specimen is outstanding for its size — with crisp, well-defined edges, glassy luster, and striking black inclusions that provide excellent contrast. \n\nCollected in 2024 by Willie Fannon and Heidi Grunenwald from the Herkimer Diamond Mine in Middleville, New York, this piece originated from a hydrocarbon-rich pocket located in the front section of the mine. The pocket, slightly smaller than a volleyball, produced numerous high-quality quartz crystals ranging from water-clear to champagne-smoky in color, with the largest exceeding 2 inches. This particular specimen is a fine example of the aesthetic and collector's quality that Herkimer County is known for. As with most Herkimer Diamond specimens of this size, it has been expertly reconstructed along two natural contacts with Loctite Light Cure Adhesive. \n","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767014673,"sku":"min1858","price":950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_3c35d52c.jpg?v=1783483391"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1859mineral","title":"Quartz Var. Herkimer Diamond","description":"Featuring a gemmy bed of glistening black druzy quartz crowned by a pristine Herkimer Diamond, this exceptional thumbnail specimen (23×21×14 mm) dazzles with unusually intense pyrobitumen (anthraxolite) inclusions. These rich hydrocarbon inclusions create a striking contrast against its glassy luster and sharp crystal faces. Although traces of hydrocarbon are typical at Middleville, the depth and even distribution of these inclusions are rare for this particular locality. Its sculptural form, combined with this locality’s fame, makes it a standout acquisition for any serious thumbnail mineral collector. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767047441,"sku":"min1859","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_70774491.jpg?v=1783483488"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1860mineral","title":"Quartz Var. Herkimer Diamond","description":"A superb large Herkimer diamond featuring exceptional clarity with internal inclusions of black anthraxolite, creating bold contrast within the glassy crystal interior. A slightly smoky hue gives this piece an intriguing gray-champagne color, which pairs beautifully with its great transparency. This piece weighs just over 35 grams and measures 46 mm, with sharp, edges, high luster, and an sharp geometric form that reflects light beautifully. A smaller associated crystal is perched along one face, enhancing the visual balance and display quality of the specimen. Its impressive size, excellent quality, and striking internal features make it ideal for a high-end or museum-quality collection.\n\nThis specimen was mined in 2024 by Willie Fannon and Heidi Grunenwald from a hydrocarbon-rich pocket located in the Herkimer Diamond Mine in Middleville, New York. The pocket—slightly smaller than a volleyball—was dense with anthraxolite and yielded numerous high-grade crystals ranging from water-clear to champagne smoky, with the finest examples like this one exhibiting outstanding sharpness and form. As with most Herkimer Diamond specimens of this size, it has been expertly reconstructed along one natural contacts with Loctite Light Cure Adhesive. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767080209,"sku":"min1860","price":1450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_79293a53.jpg?v=1783483559"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1863mineral","title":"Quartz Var. Herkimer Diamond","description":"An impressive Herkimer diamond cluster featuring two well-formed quartz crystals perched in a stacked formation on a dolostone matrix. Only the lower crystal makes contact with the matrix, creating a visually engaging composition with excellent dimensionality and sculptural presence. The dolostone matrix has been cut on two sides, allowing the piece to sit upright, or on its side, and display these gemmy crystals beautifully. This aesthetic specimen is a great representation of the contrasting appearances  between Herkimer Diamonds and their host rock, the Little Falls Dolostone. We mined this specimen in April of 2025 and reconstructed it along its natural contacts with epoxy 330. Miniature-sized specimen (45x41x22mm) with high aesthetic impact, ideal for collectors with an interest in sculptural mineral specimens. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767571729,"sku":"min1863","price":375.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_f2d2baf6.jpg?v=1783483688"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1862mineral","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eAn impressive high-grade Herkimer Diamond cluster featuring a large, sharply formed Herkimer Diamond accompanied by many smaller Herkimer diamonds arranged in two distinct groupings. The main crystal displays a faint smoky hue caused by disseminated pyrobitumen, with striking jet-black hydrocarbon (anthraxolite) inclusions that offer bold internal contrast. Well-balanced and sculptural, this piece stands out for its quality and complexity, particularly at this size. A fine example of Herkimer quartz crystallization with excellent clarity, luster, and visual appeal.\u003c\/p\u003e\n\u003cp\u003eThis Herkimer Diamond was mined in 2024 by Willie Fannon and Heidi Grunenwald from a hydrocarbon-rich pocket located in the Herkimer Diamond Mine in Middleville, New York. The pocket—slightly smaller than a volleyball—was dense with anthraxolite and yielded numerous high-grade crystals ranging from water-clear to champagne smoky, with the finest examples like this one exhibiting outstanding sharpness and form. As with most Herkimer Diamond clusters of this size, it has been expertly reconstructed along one natural contacts with Loctite Light Cure Adhesive. \u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767604497,"sku":"min1862","price":1950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_6c24da0a.jpg?v=1783483801"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1864mineral","title":"Quartz Var. Herkimer Diamond","description":"\u003cp\u003eBeautiful Herkimer Diamond on dolostone matrix from Middleville, New York. Smoky anthraxolite can be seen within the core of the Herkimer Diamond. A nicely balanced specimen that has had the dolostone matrix trimmed down on two sides so it can sit nicely for display.\u003c\/p\u003e","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767637265,"sku":"min1864","price":45.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_28e3cfcc.jpg?v=1783483862"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1867mineral","title":"Quartz Var. Herkimer Diamond","description":"Herkimer Diamond crystal cluster with excellent aesthetic arrangement. A fantastic example of the clarity and double terminated shape that Herkimer Diamonds are known for. Contact indentations show where the crystal grew in contact with the host rock.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585767735569,"sku":"min1867","price":210.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_66087f77.jpg?v=1783483923"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1868mineral","title":"Quartz Var. Herkimer Diamond","description":"Exquisite Herkimer Diamond quartz cluster with fantastic clarity and luster. Excellent quality for a Herkimer Diamond specimen of this size, 33 mm in length and weighing over 12 grams. A fantastic example of the clarity and double terminated shape that Herkimer Diamonds are known for worldwide. Contact indentations show where the crystal grew in contact with the host rock.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585811644689,"sku":"min1868","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_5721f469.jpg?v=1783484007"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1872mineral","title":"Quartz Var. Herkimer Diamond","description":"Gorgeous, high-grade Herkimer Diamond with excellent clarity.  This lovely raw gemstone features exceptional brilliance and clarity, a glassy luster, a few geometric \"footprints,\" and small contact imprints showing where it grew in contact with the host rock, the Little Falls Dolostone. A beautiful, water-clear Herkimer Diamond that would make a great jewelry piece.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585811677457,"sku":"min1872","price":80.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_1aefc0b2.jpg?v=1783484067"},{"product_id":"mineral-collectionquartz-var-herkimer-diamond-min1871mineral","title":"Quartz Var. Herkimer Diamond","description":"Excellent Herkimer Diamond with sharp geometric form, amazing clarity, and glassy luster. Incredibly gemmy, double-terminated, and of excellent quality for its size, (nearly one inch in length). Small contact marks showing where it grew in contact with the Little Falls Dolostone. Collected in April of 2025 from the Herkimer Diamond Mine in Middleville, NY. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51585812431121,"sku":"min1871","price":175.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_626dd42d.jpg?v=1783484114"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1884mineral","title":"Quartz Var. Herkimer Diamond","description":"A stunning, water-clear Herkimer Diamond sitting snugly in the dolostone host rock. The brilliance of the crystal gives beautiful contrast to the gray matrix. A beautiful piece that shows the shocking juxtaposition of these gemmy crystals in rough stone. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617748746513,"sku":"min1884","price":50.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_c5a0f57c.jpg?v=1783484174"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1885mineral","title":"Quartz Var. Herkimer Diamond","description":"Lovely Herkimer Diamond matrix specimen featuring a water-clear Herkimer Diamond nestled within a pocket in dolostone. The Herkimer Diamond is so clear that it looks almost like a water droplet against the dark backdrop of gray matrix. This specimen beautifully demonstrates the natural beauty of Herkimer Diamonds. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617748779281,"sku":"min1885","price":45.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_d1611fe6.jpg?v=1783484212"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1886mineral","title":"Quartz Var. Herkimer Diamond","description":"Beautiful little Herkimer Diamond perched within a little gray dolostone pocket. An excellent representation of the raw beauty of Herkimer Diamonds. A miniature-sized specimen. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617748812049,"sku":"min1886","price":28.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_cf7e0efc.jpg?v=1783484263"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1887mineral","title":"Quartz Var. Herkimer Diamond","description":"Excellent, almost-flawless, Herkimer Diamond. A completely natural crystal with eye catching brilliance. This raw crystal would make a great jewelry piece. 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","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617958986001,"sku":"min1893","price":35.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_2d0819d5.jpg?v=1783484654"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1895mineral","title":"Quartz Var. Herkimer Diamond","description":"Gorgeous, high-grade Herkimer Diamond with excellent clarity.  This lovely raw gemstone features exceptional brilliance and clarity, interesting internal details, and small contact imprints showing where it grew in contact with the host rock, the Little Falls Dolostone. A beautiful, water-clear Herkimer Diamond that would make a great jewelry piece.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617959018769,"sku":"min1895","price":66.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_4c522dc5.jpg?v=1783484701"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1896mineral","title":"Quartz Var. Herkimer Diamond","description":"Stunning Herkimer Diamond with amazing clarity and glassy luster. Specimen features an incredibly gemmy appearance and contact points showing where it grew in contact with the host rock.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617959051537,"sku":"min1896","price":135.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_d67bed04.jpg?v=1783484776"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1897mineral","title":"Quartz Var. Herkimer Diamond","description":"A genuine New York Herkimer Diamond with excellent clarity and luster. Intricate internal details add depth to this stunning crystal, and contact marks along its surface show where it grew perched along the host rock; the Little Falls Dolostone. A great specimen from New York's most famous quartz mine. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617959084305,"sku":"min1897","price":80.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_1d48bee7.jpg?v=1783484836"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1907mineral","title":"Quartz Var. Herkimer Diamond","description":"A double-terminated Herkimer Diamond quartz crystal from the now-closed Ace of Diamond Mine, featuring a warm golden hue from iron oxidation. Its pseudocubic habit and large glassy faces showcase a distinct crystal form, making it a lovely addition to any collection.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617959903505,"sku":"min1907","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Amin-6_efb2290b-e258-49e8-b338-002242b4c67e.jpg?v=1748752250"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1923mineral","title":"Quartz Var. Herkimer Diamond","description":"An incredible Herkimer Diamond specimen showcasing brilliant internal rainbow optics that flash vibrant colors in sunlight. Glassy flat faces serve as windows to the iridescent hues within, while a slight smokiness from trapped hydrocarbon adds depth. Collected from the elusive Herkimer Diamond Mine in Middleville, NY, this piece is a standout for collectors who appreciate natural iridescence.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617962000657,"sku":"min1923","price":135.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-elusive-middleville-mine-new-york-usa-authentic-mineral-specimens_7234545f.jpg?v=1783502438"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1924mineral","title":"Quartz Var. Herkimer Diamond","description":"A water-clear Herkimer Diamond shard with excellent clarity and multiple flat faces that catch the light beautifully. This partial crystal, naturally broken in half, reveals a unique shape complemented by a glassy luster. Its form and translucence make it an ideal candidate for a distinctive jewelry pendant or a standout display piece in any collection.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617962328337,"sku":"min1924","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/min1924_1.jpg?v=1748754561"},{"product_id":"mineral-collectionquartz-var-herkimer-diamondmin1925mineral","title":"Quartz Var. Herkimer Diamond","description":"Lovely raw Herkimer Diamond quartz with excellent luster and great clarity.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51617962361105,"sku":"min1925","price":25.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/min1925.jpg?v=1748754490"},{"product_id":"min1936quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"A 40 mm golden Herkimer diamond featuring several flat faces, showcasing a lovely golden hue from iron mineral oxidation. Its excellent luster highlights its unique, natural beauty, making it a standout piece for any collection.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51656941306129,"sku":"min1936","price":35.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/min1936-1-2.jpg?v=1749492034"},{"product_id":"min1943quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Lovely water-clear Herkimer Diamond with excellent luster and great double-terminated form. Small contact indents show where the crystal grew in contact with the Little Falls dolostone. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51693176094993,"sku":"min1943","price":45.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_3f5a1c39.jpg?v=1783484907"},{"product_id":"min1942quartz-var-herkimer-diamond-1","title":"Quartz Var. Herkimer Diamond","description":"A water-clear, double-terminated Herkimer diamond from Herkimer County, New York, featuring a very tiny enhydro pocket that houses a singular drifting anthraxolite particle. Best viewed with magnification, anthraxolite speck slowly glides within its tiny enclosure, adding dynamic intrigue to the crystal’s flawless clarity. Aside from a handful of subtle contact indents along its lustrous faces, this gem is of exceptionally high quality. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51693247037713,"sku":"min1942","price":42.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_39a600c5.jpg?v=1783484977"},{"product_id":"min1944quartz-var-herkimer-diamond-1","title":"Quartz Var. Herkimer Diamond","description":"Beautiful Herkimer Diamond in its natural form, with intricate internal details and inclusions, excellent clarity, and vitreous luster. Black flecks of  hydrocarbon trapped within the crystal add depth, and contact indents along the surface show where the crystal grew attached to the host rock. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51693251199249,"sku":"min1944","price":62.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_aa05a90e.jpg?v=1783485036"},{"product_id":"min1946quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Amazing, water-clear, Herkimer Diamond specimen. This crystal is of exceptional clarity and quality, making it the perfect addition to a high-end mineral collection. Several contact indentations (shown in photos) show where it grew in contact with the host rock, the Little Falls dolostone. Collected by our team in April 2025. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51693359923473,"sku":"min1946","price":85.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_f4fe64d4.jpg?v=1783485095"},{"product_id":"min1953quartz-var-herkimer-diamond-1","title":"Quartz Var. Herkimer Diamond","description":"A stunning water-clear Herkimer diamond perched perfectly in the matrix, the Little Falls dolostone. The crystal exhibits excellent clarity and form, contrasting beautifully with the gray matrix. A classic specimen offering both visual appeal and educational value for collectors and geology enthusiasts alike.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51721124053265,"sku":"min1953","price":55.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_9caddd38.jpg?v=1783485154"},{"product_id":"min1947-quartz-var-herkimer-diamond-1","title":"Quartz Var. Herkimer Diamond","description":"A superb large cluster of Herkimer diamonds featuring 11 prominent crystals along with numerous smaller ones distributed across the piece. The crystals are exceptionally water-clear with brilliant luster, and the arrangement shows excellent balance and three-dimensional form. The primary crystals display sharp, well-defined faces with clean terminations, while smaller diamonds accent the composition, adding visual depth and complexity.\n\nAs with most large Herkimer diamond clusters, this specimen has been carefully reconstructed along natural contacts from a 2024 pocket, with a few  repairs made to stabilize the piece. The result is a showpiece-quality cluster of the type typically seen in museum displays—an outstanding addition to any advanced collection.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51721137455377,"sku":"min1947","price":3250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_50e1445a.jpg?v=1783485203"},{"product_id":"min1962quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"A beautiful, water-clear quartz crystal—famously known as a “Herkimer diamond”—peeks out from the dolostone matrix collected at the Herkimer Diamond Mines, Middleville, Herkimer Co., New York. The upper termination protrudes above the rock, while a second face peeks out lower in the pocket, creating a natural “window” that channels light straight through the gemmy interior and ignites bright internal reflections. Matrix-attached Herkimers of this clarity are far less common than loose crystals, and the juxtaposition of  geometry against the earthy host rock makes for a striking display. Collected by our team in April 2025, this piece captures the classic brilliance and form that have made the locality legendary among collectors.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51741018882321,"sku":"min1962","price":60.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_d97aade0.jpg?v=1783485338"},{"product_id":"min1964quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Perched along a ridge of dolostone, a tight cluster of bright, double-terminated quartz crystals, classic New York Herkimer Diamonds, rises in dramatic relief. Subtle honey-orange staining at the pocket rim provides warm contrast to the glassy terminations. Collected from the Ace of Diamonds Mine, Middleville, Herkimer Co., New York, this piece represents a once-prolific but now closed locality (shut to collecting in 2023). Specimens showing multiple, well-exposed Herkimers on their original matrix have become notably scarce, making this an appealing addition for any quartz or New York specialist","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51741049323793,"sku":"min1964","price":105.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/min1964_2.jpg?v=1750872498"},{"product_id":"min1985quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Gorgeous, high-grade Herkimer Diamond with excellent clarity. This lovely raw gemstone features exceptional brilliance and clarity, interesting internal details, and small contact imprints showing where it grew in contact with the host rock, the Little Falls Dolostone. A beautiful, water-clear Herkimer Diamond that would make a great jewelry piece.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51783399375121,"sku":"min1985","price":85.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_ae981113.jpg?v=1783485399"},{"product_id":"min1986quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Stunning, high-grade Herkimer Diamond with incredible clarity and natural double terminated shape. Very small contact indents show where the crystal grew in contact with the host rock, the Little Falls dolostone. ","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51783618593041,"sku":"min1986","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_bd033fa3.jpg?v=1783485458"},{"product_id":"min1987quartz-var-herkimer-diamond","title":"Quartz Var. Herkimer Diamond","description":"Excellent, almost-flawless, Herkimer Diamond. A completely natural crystal with eye catching brilliance. This raw crystal would make a great jewelry piece. This is a small, 14 mm, crystal.","brand":"Adamantine Minerals","offers":[{"title":"Default Title","offer_id":51783665844497,"sku":"min1987","price":45.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/files\/Quartz-Var_-Herkimer-Diamond-herkimer-diamond-mine-raw-quartz-crystal-clear-double-terminated_e5eae05f.jpg?v=1783485494"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0900\/2277\/3009\/collections\/min1862x-1.jpg?v=1750189205","url":"https:\/\/adamantineminerals.com\/collections\/quartz-crystals.oembed","provider":"Adamantine Minerals","version":"1.0","type":"link"}