1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Dilute acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.14-3.252.93-2.96
1
7.18
1.5 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Not Available
Distinct on {010}, imperfect {110} and {011}
1.7 Mohs Hardness
1.8 Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references