Phenakite and Sugilite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
2.69-2.79
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
Poor on {0001}
Mohs Hardness
7.5-8
5.5-6.5
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Sugilite Chemical Formula
While comparing Phenakite 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 Phenakite and Sugilite chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.