Physical Properties of Garnet Garnet is a well-known gemstone that actually comprises several varieties of similar minerals that go by different names and colors but are all collectively known as “garnet”. Names like almandine, andradite, grossular, pyrope, and spessartine might not sound familiar, but they are all just different kinds of garnet. The hardness ranges from 6.5 to 7.5 on the Mohs scale, so garnet is a pretty hard gemstone, no matter what the variety. In fact, the harder varieties of garnet are being used as abrasive material in some industries. The color of garnet differs depending on what type
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