Worldwide Minerals

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Authentic Herkimer Diamonds

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Under $100

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The Viburnum Trend Mining District

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Featured Specimens

Featured Specimens

Want to see more? Check out our mineral galleries to explore by species and groups!

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Quartz Var. Herkimer Diamond

Quartz Var. Herkimer Diamond

Herkimer Diamond Mine (Herkimer Diamond Development), Middleville, Town of Newport, Herkimer County, New York, USA
Chrysocolla & Quartz

Chrysocolla & Quartz

Tentadora Mine, Julcani mining district, Ccochaccasa District, Angaraes Province, Huancavelica, Peru
Vanadinite

Vanadinite

Mibladen, Aït Oufella Caïdat, Midelt Cercle, Midelt Province, Drâa-Tafilalet Region, Morocco
Chalcopyrite & Quartz

Chalcopyrite & Quartz

Casteel Mine (Viburnum No. 35 Mine), Bixby, Iron County, Missouri, USA
Spessartine Garnet

Spessartine Garnet

Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou, Fujian, China
Stibnite

Stibnite

Hunan Province, China
Sweetwater calcite specimen with small cream-colored dolomite crystals and brassy chalcopyrite on a gray background.

Calcite, Dolomite and Chalcopyrite

Sweetwater Mine, Ellington, Viburnum Trend Mining District, Missouri, USA
Azurite

Azurite

Milpillas Mine, Milpillas, Santa Cruz Municipality, Sonora, Mexico
Quartz Var. Herkimer Diamond

Quartz Var. Herkimer Diamond

Herkimer Diamond Mine (Herkimer Diamond Development), Middleville, Town of Newport, Herkimer County, New York, USA
Prehnite crystals with green color on matrix rock. Copper inclusions can be seen through the mint green prehnite.

Prehnite with Native Copper

Keweenaw County, Michigan, USA
Actinolite

Actinolite

Hastings County, Ontario, Canada
Calcite

Calcite

Daye Co., Huangshi, Hubei, China
Chrysocolla & Quartz

Chrysocolla & Quartz

Tentadora Mine, Julcani mining district, Ccochaccasa District, Angaraes Province, Huancavelica, Peru
Serandite

Serandite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Adamite, Austinite & Goethite

Adamite, Austinite & Goethite

Gold Hill Mine, Gold Hill, Deep Creek Mountains, Tooele County, Utah, USA
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About Us

At Adamantine Minerals, we offer natural mineral specimens for collectors at all stages—from curious beginners to experienced enthusiasts. With a background in geology and a passion for the science behind each piece, we aim to make collecting both approachable and rewarding.

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