Latest Arrivals

Shop our latest additions to our site! Updated weekly on Tuesdays at 12:00pm EDT.

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Collector’s Showcase

A curated selection of our most exceptional mineral specimens— for serious collectors and display-worthy collections.

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Natural Mineral Pairings

Explore the beauty of natural mineral associations—where contrasting forms, colors, and crystal habits grow together in a single piece.

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Budget Specimens Under $35!

Shop our selection of affordable mineral specimens, all priced under $35!

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The Herkimer DIamond Mine

Explore our gallery of specimens collected in the Herkimer Diamond Mine in Middleville, NY!

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Linwood Mine Collection

From glistening calcites to razor-sharp barites, it is easy to see why Linwood Mine is a beloved mid-west locality!

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Mineral Displays: A Setup Guide

Learn how to build a professional-looking mineral display using simple techniques—maximize visual impact, preserve your specimens, and tell a story with your collection. For collectors at any level!

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Featured Specimens
Stibnite
Stibnite
Hunan, China
Fluorite
Fluorite
Zhejiang, China
Serandite
Serandite
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Vanadinite
Vanadinite
Mibladen, Aït Oufella Caïdat, Midelt Cercle, Midelt Province, Drâa-Tafilalet Region, Morocco
Quartz Var. Amethyst
Quartz Var. Amethyst
Las Vigas de Ramírez Municipality, Veracruz, Mexico
Chrysocolla & Quartz
Chrysocolla & Quartz
Tentadora Mine, Julcani mining district, Ccochaccasa District, Angaraes Province, Huancavelica, Peru,
Native Copper
Native Copper
Keweenaw County, Michigan, USA
Quartz Var. Herkimer Diamond
Quartz Var. Herkimer Diamond
Herkimer Diamond Mine (Herkimer Diamond Development), Middleville, Town of Newport, Herkimer County, New York, USA
Quartz Var. Herkimer Diamond
Quartz Var. Herkimer Diamond
Herkimer Diamond Mine (Herkimer Diamond Development), Middleville, Town of Newport, Herkimer County, New York, USA
Serandite
Serandite
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Chrysocolla & Quartz
Chrysocolla & Quartz
Tentadora Mine, Julcani mining district, Ccochaccasa District, Angaraes Province, Huancavelica, Peru
Marcasite
Marcasite
Linwood Mine, Buffalo, Scott County, Iowa, USA
Spessartine Garnet & Smoky Quartz
Spessartine Garnet & Smoky Quartz
Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou, Fujian, China
Cerussite & Malachite
Cerussite & Malachite
Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia
Calcite and Marcasite
Calcite and Marcasite
Rensselaer Quarry, Pleasant Ridge, Jasper County, Indiana, USA
Actinolite
Actinolite
Hastings County, Ontario, Canada

Quartz Var. Herkimer Diamond

A large Herkimer Diamond quartz cluster with a larger double terminated crystal accented by several perched quartzes.

Herkimer Diamond Mine

The Herkimer Diamond Mine, located in Middleville, NY, is world-renowned for its...

Herkimer Diamond Mine

Quartz Var. Herkimer Diamond

Quartz Var. Herkimer Diamond

SOLD

Quartz Var. Herkimer Diamond

SOLD

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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