1 Physical Properties
1.1 Tenacity
BrittleWalter Schumann
Slightly sectile
1.4 Solubility
hot salt water
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
1.17 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, Gemstones (2009), Brittle
1.18 Cleavage
None
Prismatic {10 1 0}, perfect
1.19 Mohs Hardness
1.20 Chemical Composition
SiO2 · nH2O
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references