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