Bi Color Tourmaline 1.91 Ct. Clean Octagon Shape 6.4 x 6.3 x 5.2 Mm. Natural Gem
Price: $126.29
Product ID: 807226808
Product Name: Tourmaline
Price : $126.29
Weight: 1.91
Jewelry Size: 6.4 x 6.3 x 5.2 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