1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.74-2.902.65-2.90
1
7.18
2.4 Fracture
Uneven, Gemstones (2009), Splintery
Gemstones (2009), Flexible Flexible fragments.
2.5 Cleavage
Perfect on {100} and {001}
{001} Perfect
2.6 Mohs Hardness
2.12 Chemical Composition
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references