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  1. 3.27 Ct. Octagon Shape Natural Bi Color Tourmaline Gemstone Unheated

    Price:  $214.44

    Product ID: 807237817
    Product Name: Tourmaline
    Price : $214.44
    Weight: 3.27
    Jewelry Size: 10 x 7.4 x 4.5 Mm
    Shape: Octagon
    Color: Bi Color
    Clarity: SI
    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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