Description Natural London Blue Topaz Pears Moh’s Scale Hardness: 8 Specific Gravity: 3.4-3.6 Refractive Index: 1.606-1.638 Treatment: Irradiated Stability/Care: Excellent / Normal Origin: Brazil Average Weights: 9x6mm – 1.45cts 10x7mm – 2.13cts
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| Width | +/- 135cm |
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