1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.6 Durability
Not Available
Not Available
1.7 Specific Gravity
1.98-2.503.23-3.26
1
7.18
1.8 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.9 Cleavage
Not Available
Perfect on {010} imperfect on {100}
1.10 Mohs Hardness
1.11 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)