1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.2 Durability
Not Available
Not Available
1.4 Specific Gravity
1.15 Fracture
Fibrous, Difficult, Fibrous
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.16 Cleavage
{001} Perfect
perfect on {010}; good on {100}
1.17 Mohs Hardness
1.18 Chemical Composition
Al(OH)3
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references