Spinel and Boracite Physical Properties
Tenacity
Not Available
Brittle
Durability
Not Available
Not Available
Specific Gravity
3.64-3.66
2.95-2.96
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None, but may exhibit slight parting
None
Chemical Composition
MgAl2O4
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Spinel and Boracite Chemical Formula
While comparing Spinel and Boracite 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 Boracite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Spinel and Boracite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Boracite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.95-2.96 whereas that of Boracite is 2.95-2.96.