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Approximately 3
Amethyst is also said to have healing properties and is the birthstone for February
and Garnet
friendship
Calcite Specimen 3.5" Rings Approximately 3This unusual spiky Calcite specimen comes to us all the way from the Tonglushan Mine, Hubei Province in China! This Calcite specimen features intricate points of various heights while displaying a color combination of ruddish red and brown. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". How is calcite formed?
