1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Conchoidal, Brittle
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
1.6 Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)