volcanic glass snowflake obsidian specimen

Volcanic Glass: A Remarkable Mineraloid

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needles blue agate heart shaped cabochon

Needles Blue Agate: Slab & Cab Basics

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hemimorphite

Hemimorphite: A Lapidary Guide

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hemimorphite crystal that has been dyed

Dyed Hemimorphite Crystal: Spotting Fakes

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Blue smithsonite mineral on white background.

Smithsonite, Smithson & the Smithsonian

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calamine-anti-itch-mineral

Calamine: Beyond An Anti-Itch Mineral

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jack-o'-lantern cabochon

How to Make a Jack-O’-Lantern Cabochon

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stibnite from Transylvania

Transylvania Minerals: Gothic Beauty

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alien eye fluorite specimen

Alien Eye Fluorite Field Guide

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zinc headstones at fayette cemetery

Zinc Headstones: The Legacy of Zinkers

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