Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.022.72-2.75
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
{0001} Poor
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
-99996-6.5
2
10
👆🏻
Chemical Composition
Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)