Product ID: 807247763
Product Name: Tourmaline
Price : $8.52
Weight: 0.62
Jewelry Size: 8.7 x 3.1 x 2.5 Mm
Shape: Octagon
Color: Green
Clarity: IF
Luster: Very 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