Tourmalines is varieties of elbaïte of the group of tourmalines being a part of the family of silicates. Only the tourmaline chromifère is a variety of dravite.
Color: wide color range, green, blue, yellow, pink, red, brown, colorless. Bi-color is common.
Luster: glassy
Origin: Brazil, Madagascar, Namibia, Zambia, Sri Lanka, Burma, Russia, the United States, Afghanistan.
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