Product ID: 803803326
Product Name: Iolite
Price : $5.99
Weight: 0.58
Jewelry Size: 6.2 x 4.4 x 3.3 Mm
Shape: Octagon
Color: Violet Blue
Clarity: SI
Luster: Good
Origin: Madagascar
Treatment: Unheated
Crystal Structure: Orthorhombic
Hardness: 7 - 7.5
Specific Gravity: 2.3
Refractive Index: 1.52 - 1.57
Chemical: Mg2Al4Si5O18, Magnesium Aluminum Silicat