How To Use Mohs scale In A Sentence

• Lithium is extraordinarily soft for a metal with a rating of 0.6 on the Mohs scale, softer even than talc, whose Mohs rating is 1.
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• Diamond has been assigned a hardness value of 10, only a single point higher than corundum on Mohs scale, although it is far harder than this would indicate.
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• Several authors mention the use of emery, which technically is a fine sand made from a very hard form of aluminum oxide (corundum) which has a Mohs scale hardness of 9, but the term has been used loosely as "emery" per se was not available in Egypt. Interactive Dig Hierakonpolis - Hierakonpolis 2009 - Field Note 3
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