Bi Color Tourmaline 1.76 Ct. Octagon 7.5 x 5.3 Mm. Natural Gemstone Unheated
Price: $122.99
Product ID: 807216325
Product Name: Tourmaline
Price : $122.99
Weight: 1.76
Jewelry Size: 7.5 x 5.3 x 4.7 Mm
Shape: Octagon
Color: Bi Color
Clarity: VSI - 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