Brazilianite and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
2.98-2.99
3.64-3.66
Fracture
Conchoidal, Gems
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
(010) Distinct to good
None, but may exhibit slight parting
Chemical Composition
NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Brazilianite and Spinel Chemical Formula
While comparing Brazilianite and Spinel physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Brazilianite and Spinel chemical formula.
- Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Spinel- MgAl2O4
Brazilianite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brazilianite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.