1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.643.90-4.00
1
7.18
2.4 Fracture
Not Available
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
2.5 Cleavage
Not Available
Perfect on {001}, good on {210}, poor on {010}
2.6 Mohs Hardness
2.10 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references