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  1. 3.79 Ct. Natural Round Concave Cut London Blue Topaz Gemstone

    Price:  $93.30

    Product ID: 807146475
    Product Name: Blue Topaz
    Price : $93.30
    Weight: 3.79
    Jewelry Size: 9.7 x 9.7 x 6.2 Mm
    Shape: Round Concave Cut
    Color: London Blue
    Clarity: VVS
    Luster: Good
    Origin: Brazil
    Treatment: Treated
    Crystal Structure: Orthorhombic
    Hardness: 8
    Specific Gravity: 3.49 - 3.57
    Refractive Index: 1.606 - 1.629
    Chemical: Al2SiO4(F OH)2
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