Product ID: 807247912
Product Name: Tourmaline
Price : $7.08
Weight: 0.61
Jewelry Size: 5.3 x 4.8 x 2.9 Mm
Shape: Octagon
Color: Green
Clarity: SI1
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