Chemical Composition: X 3 Y 2 (SiO 4 ) 3
Refractive Index: 1.70 – 1.89
Specific Gravity: 3.3 – 4.2
Crystal System: Cubic
Moh's Hardness: 6 ½ - 7 ½
 
For price and availability please enquire through the link or email vira@piromgems.com