Product ID: 807234991
Product Name: Tourmaline
Price : $31.17
Weight: 1.94
Jewelry Size: 7.5 x 6.3 x 4.8 Mm
Shape: Oval
Color: Yellow
Clarity: 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