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  1. 2.76 Ct. Clean Octagon Natural Bi Color Tourmaline Gem

    Price:  $258.05

    Product ID: 807232128
    Product Name: Tourmaline
    Price : $258.05
    Weight: 2.76
    Jewelry Size: 7.1 x 7 x 5.9 Mm
    Shape: Octagon
    Color: Bi Color
    Clarity: IF
    Luster: Good
    Origin: Nigeria
    Treatment: Unheated
    Crystal Structure: Trigonal
    Hardness: 7 - 7.5
    Specific Gravity: 3.0+
    Refractive Index: 1.62 - 1.68
    Chemical: Na(Li,Al)3Al6(B03)3 Si6O18(OH)4
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