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Gemstone Guide: Tourmaline

Source: Brazil, Kenya, Madagascar, Mozambique, Pakistan, Tanzania, Zambia, United States.

Mineral: Tourmaline

Hardness: 7-7.5

Colour: all colours including bi-colour, watermelon tourmaline slices, green tourmaline and rubellite.

Clarity; Inclusions in tourmaline appear in the form of a crystal growth.

Treatments: Most are not treated as they are natural stones, however some blue to green colour tourmalines have been heat treated.

Care and cleaning: Warm soapy water is the best method for cleaning.

Birthstone: October

Stone properties: Builds self-confidence

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