Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.025.35
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Indistinct on {110}
Perfect on {100}, imperfect on {001}
Mohs Hardness
5-5.52.5
2
10
👆🏻
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)