Product ID: 807247762
Product Name: Tourmaline
Price : $7.62
Weight: 0.52
Jewelry Size: 5.5 x 3.7 x 2.8 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