1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
insoluble in common solvents
Not Available
1.6 Durability
Not Available
Not Available
1.8 Specific Gravity
2.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Gems, Uneven
2.6 Cleavage
Indiscernible
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
2.7 Mohs Hardness
1.16 Chemical Composition
SiO2
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references