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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The Herkimer DIamond Mine
Explore our gallery of specimens collected in the Herkimer Diamond Mine in Middleville, NY!
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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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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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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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Quartz Var. Herkimer Diamond
Herkimer Diamond Mine
The Herkimer Diamond Mine, located in Middleville, NY, is world-renowned for its...
Quartz Var. Herkimer Diamond
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.