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Scale of Hardness Collection	Go back to: Rock & Mineral Collections
	Quantity in Basket: none Product Code: 0712 Price: $13.95 Shipping Weight: 1.00 pounds
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Scale of Hardness Collection This collection is the traditional Mohs Scale which assigned a "hardness" to ten key minerals with talc #1 (the softest) and diamond #10 (the hardest). The first 9 minerals are included in this set. Nine specimens approximately 1" x 1 1/2", number-coded. Included are specimens of Talc, Feldspar, Gypsum, Quartz, Calcite, Beryl, Fluorite, Corundum, and Apatite. Grades: 6-12. Learn about Scale of Hardness