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100-65 - Geology Rocks

100-65 - Geology Rocks
100-65 - Geology Rocks
100-65 - Geology Rocks

Geology Rocks! How hard can it be, on a scale of 1 to 10, to learn about geology when you're wearing this shirt? In stunning detail, our exclusive Geology Rocks! T-shirt shows the minerals representing all 10 levels of Mohs' Scale of Relative Mineral Hardness, devised by Friedrich Mohs in 1822. Scratching the surface of this intriguing science, our Geology Rocks! shirt brings out the rock-hound in everyone.We guarantee you'll dig it!

Our Price: $20.00
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