2.74 Ct. Octagon Natural Gem Bi Color Tourmaline Unheated
Price: $384.44
Product ID: 807230421
Product Name: Tourmaline
Price : $384.44
Weight: 2.74
Jewelry Size: 9.9 x 6 x 4.4 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