Product ID: 803804522
Product Name: Iolite
Price : $7.95
Weight: 0.81
Jewelry Size: 7.2 x 4.7 x 3.5 Mm
Shape: Octagon
Color: Violet Blue
Clarity: VSI
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