Tourmaline and opal are the birthstones of the month of October. Tourmaline is the national gemstone of the United StatesHardness : 7.0 Appearance :The reddish to purple color of tourmaline is called rubellite. Like emerald, inclusions are common. Ruby red colored stones are the most valuable. Enhancements : Pink, red and purple tourmaline is occasionally heat treated to improve color
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Nehru Bazar, Jaipur, Rajasthan