With a hardness of 7 – 7.5, Tourmaline is quite resistant to scratching, chipping, and cracking, making it an excellent choice for everyday jewelry. One of the most distinctive features of Tourmaline is pleochroism, the presence differing colors or depths of color when the gem is rotated. Because of its strong pleochroism, Tourmaline is sought out by skilled lapidaries, who can cut the gemstone in such a way that it appears multicolored.
CONGO TOURMALINE 6.65 CTS.
WEIGHT: 6.65 CTS.