Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.54-2.612.60-2.64
1
7.18
👆🏻
Fracture
Uneven
Uneven, Splintery, Conchoidal
Cleavage
{001} Perfect, {010} Good
Absent
Mohs Hardness
66.5-7
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
SiO 2Arthur Thomas , Gemstones (2009)