Bi Color Tourmaline 2.32 Ct. Octagon Shape 15.9 x 4.6 Mm. Natural Gem Nigeria
Price: $174.35
Product ID: 807237822
Product Name: Tourmaline
Price : $174.35
Weight: 2.32
Jewelry Size: 15.9 x 4.6 x 3 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