1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Gemstones of the world (2001)
Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Not Available
{110} Perfect, {010} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)