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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Our World-Class Herkimer Diamond Collection
Quartz Var. Herkimer Diamond
Named after their classic locality in Herkimer County, New York, Herkimer Diamonds...
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.