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Posts in rock cycle

by thegemmuseum
September 23, 2017

The Rock Cycle

The Rock Cycle   All rocks are made up of minerals. The rock cycle explains the […]
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by thegemmuseum
August 21, 2017

Gemstone Formation in Earth’s Crust

Gemstone in Earth’s Crust         →    Alexandrite LEFT: Alexandrite cut and polished. | […]
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