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.30CT AVERAGE 5X5MM TRILLION CHROME TOURMALINE. THIS GEMSTONE HAS A HARDNESS OF 7 - 71/2 ON THE MOHS HARDNESS SCALE FAIR TOUGHNESS BEST TO AVOID SUDDEN TEMPERATURE CHANGES AND HIGH HEAT.
CLICK IMAGE for ordering information |
.30CT AVERAGE 5X5MM TRILLION CHROME TOURMALINE. THIS GEMSTONE HAS A HARDNESS OF 7 - 71/2 ON THE MOHS HARDNESS SCALE FAIR TOUGHNESS BEST TO AVOID SUDDEN TEMPERATURE CHANGES AND HIGH HEAT. |