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Your Rocks, Minerals, and Crystals Library


A site dedicated to people who are obsessed with learning more about the rocks, minerals, and crystals in their growing collection.


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Check out our get-started guides to learn where to look, the tools you might need, and how to avoid common mistakes.


Recent Posts

Is Brass Harder Than Aluminum?

In their purest forms, brass is slightly harder than aluminum. However, aluminum can include additives so that it is the same strength as brass. This …
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