Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.022.54-2.61
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven
Cleavage
Indistinct on {110}
{001} Perfect, {010} Good
Mohs Hardness
5-5.56
2
10
👆🏻
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)