1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.67-2.732.55-2.63
1
7.18
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Uneven, Gems
1.6 Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
{001} Perfect, {010} Good
1.7 Mohs Hardness
1.8 Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
KAlSi 3O 8Arthur Thomas , Gemstones (2009)