Product ID: 807237848
Product Name: Tourmaline
Price : $544.16
Weight: 3.90
Jewelry Size: 12 x 6.3 x 4.9 Mm
Shape: Octagon
Color: Bi Color
Clarity: VVS
Luster: Beautiful
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