1 Physical Properties
1.1 Tenacity
1.3 Solubility
1.4 Durability
Not Available
Not Available
1.6 Specific Gravity
1.8 Fracture
Uneven, Conchoidal
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.10 Cleavage
None
Distinct on {010}, imperfect {110} and {011}
1.12 Mohs Hardness
1.15 Chemical Composition
Not Available
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references