1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.572.45-2.50
1
7.18
2.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
2.6 Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Poor on {110}
2.7 Mohs Hardness
2.11 Chemical Composition
KAlSi3O8
KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references