Amethyst and Sugilite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
2.69-2.79
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indiscernible
Poor on {0001}
Chemical Composition
SiO2
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Sugilite Chemical Formula
While comparing Amethyst 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 Amethyst and Sugilite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.