Tourmaline gemstones, rubellrite, elbaite, dravite, schorl and paraiba tourmaline

Tourmaline is gemstones having a various color, Red is rubellrite, blue is indicolite, black is schorl, green is dravite. Especially, the neon color's paraiba tourmaline is very expensive. Tourmaline is borosilicate mineral. It's very complex chemical composition with various colors.

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