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Since tourmaline consists of a very large group of related gemstones, most tourmaline is traded under very colour-specific varietal names. Some of the more popular trade names include pink-red ' rubellite ', blue-green 'paraiba', blue 'indicolite' and multicoloured ' watermelon tourmaline '.
Origin of name: from Sinhalese turamali = stone of mixed colours. There are Tourmalines, which change the colour from daylight to artificial light and others display chattoyance(a mobile, wavering striped reflection).Tourmaline is found in Africa, Brazil, Madagascar, Mexico, Myanmar, Namibia, Sri Lanka and USA.