1 Physical Properties
1.1 Tenacity
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.7 Specific Gravity
3.05-3.212.90-3.00
1
7.18
1.8 Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
1.11 Cleavage
Good on {110}, poor on {100}
None
1.13 Mohs Hardness
1.14 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references