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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 '.
Tourmaline Birthstone. Mohs scale hardness: 7-7.5. Tourmaline is one of the most colorful gemstones on earth. It is the chameleon gemstone, many are familiar with pink tourmaline but it is found in the widest range of colors, including black, white and everything in between.The name tourmaline is believed to come from the Sinhalese word turmali, which means âmixedâ.ourmaline is also regarded as a birthstone for October and the anniversary gemstone for the 8th of marriage. It is believed that tourmaline has special properties: 1  Be able to strengthen the mind and spirit. 2  To heal blood disease, lymph glands, arthritis, heart disease and the nervous system.