Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Uneven, Subconchoidal, Conchoidal
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
{0001}, {11 2 0} imperfect
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references