Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
{???} Distinct, {???} Indistinct
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)