October Birthstone Tourmaline

Multicolored tourmaline, the “gemstone of the rainbow,” is prized for its unique color combinations and useful pyroelectric or piezoelectric properties. Tourmaline is a gemstone of many colors, with varieties in …

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Tourmaline The Rainbow Gem

Tourmaline Group And Colors There are a number of different varieties of crystal that make up the tourmaline group. Tourmaline is the second birthstone for the month of October. These …

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