Sugilite and Augelite Physical Properties
Specific Gravity
2.69-2.79
2.70-2.75
Fracture
Conchoidal
Conchoidal
Cleavage
Poor on {0001}
From the Greek for luster, for its pearly luster on the cleavage.
Mohs Hardness
5.5-6.5
4.5-5
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Sugilite and Augelite Chemical Formula
While comparing Sugilite and Augelite 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 Sugilite and Augelite chemical formula.
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Sugilite and Augelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Augelite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 2.70-2.75 whereas that of Augelite is 2.70-2.75.