Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.634.80-5.50
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
{001} Perfect, {010} Good
Indistinct
Mohs Hardness
6-6.55-5.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)