Product ID: 807232418
Product Name: Tourmaline
Price : $201.82
Weight: 4.70
Jewelry Size: 10.2 x 7.8 x 7 Mm
Shape: Octagon
Color: Green
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