Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.63-3.93.07-3.13
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal, Uneven
Cleavage
Indistinct
{100} Perfect, {010} Distinct, {102} Distinct
Mohs Hardness
7.5-83-3.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references