Iolite and Sugilite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.7
2.69-2.79
Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
3,1
Poor on {0001}
Mohs Hardness
7-7.5
5.5-6.5
Chemical Composition
Mg2Al4Si5O18
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Iolite and Sugilite Chemical Formula
While comparing Iolite and Sugilite 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 Iolite and Sugilite chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Iolite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.