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, Uneven, Brittle
Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Imperfect on {001}, indistinct on {011}
{110} Perfect, {010} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)