Due to its ability to produce static electricity with heat treatment and polishing, this gemstone is known as ‘Electric Stone’ (電気石) in Japanese.
Tourmaline is well known for its extensive colour variation, covering the entire colour spectrum.
Tourmaline in different colours come with prefixes that evoke images of the hues associated with them, eg. the vivid pink Rubellite Tourmaline, the striking yellow Canary Tourmaline reminiscent of the eye-catching yellow feathers of the canary. Tourmalines of clear blue and green hues are hugely popular.
Other tourmaline gems come with interesting names such as the Bi-colour Tourmaline which contains two colours, the Watermelon Tourmaline that resembles the cross section of a watermelon, and the Cat’s Eye Tourmaline with its minute inclusions that causes the gem to resemble the pupil of a cat’s eye.
It is the alternative birthstone for the month of October, together with the Opal.
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