Paraiba Tourmaline 3.57 cts
25311Product Details
Stone type: Paraiba Tourmaline
Weight: 3.57 cts
Color: Greenish-blue
Dimension: 7.76 x 7.65 x 5.76 mm
Shape & Cut: Oval, Yavorskyy cut
Certified: GIA
Treatment: Conventionally heated at low temperature
Refractive Index: 1.618-1.643
Hardness: 7-7.5
Specific Gravity: 3.1
Optical properties: Doubly refractive
Chemical formula: Complex Boron Silicate, Copper-bearing
Shipment from: Thailand
Return Policy: 3 Day Money-Back Return*
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