Tourmaline Bi Color 2.16 Ct. Octagon 7.5 x 6.6 Mm. Natural Gem Nigeria Unheated
Price: $149.99
Product ID: 807216342
Product Name: Tourmaline
Price : $149.99
Weight: 2.16
Jewelry Size: 7.5 x 6.6 x 4.8 Mm
Shape: Octagon
Color: Bi Color
Clarity: VVS
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
