1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
1.5 Durability
Not Available
Not Available
1.3 Specific Gravity
1.17 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.18 Cleavage
1.19 Mohs Hardness
1.24 Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references