Product ID: 803804558
Product Name: Iolite
Price : $9.70
Weight: 1.89
Jewelry Size: 8.5 x 7.3 x 4.6 Mm
Shape: Octagon
Color: Violet Blue
Clarity: SI1
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