how-do-agates-form

How Do Agates Form?

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turritella-agate

What to Cut: Turritella Agate

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flint rough

Exploring Ohio’s Flint Ridge

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jasper-stone

A Guide to Jasper Stone

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amethyst

Amethyst Crystals 101

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smithsonite

Smithson, Smithsonite & the Smithsonian

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carnotite-uses

Carnotite Uses Explored

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rock-collecting-for-kids

A Rock Collecting Guide for Kids

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Crystals of forsterite var. peridot

Exploring the Peridot Mesa Gem Mine

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spinel

Getting to Know Spinel

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