Sugilite and Cordierite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.79
2.57-2.66
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, Conchoidal, Brittle
Cleavage
Poor on {0001}
Fair on {100}, poor on {001} and {010}
Mohs Hardness
5.5-6.5
7-7.5
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Sugilite and Cordierite Chemical Formula
While comparing Sugilite and Cordierite 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 Cordierite 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 Cordierite- Mg2Al4Si5O18
Sugilite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.