Chalcedony and Phenakite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
2.90-2.98
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
Cleavage
Absent
Distinct on {11 2 0}, imperfect on {10 1 1}
Mohs Hardness
6.5-7
7.5-8
Chemical Composition
SiO2
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chalcedony and Phenakite Chemical Formula
While comparing Chalcedony and Phenakite 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 Chalcedony and Phenakite chemical formula.
- Chemical formula of Chalcedony- SiO2
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chalcedony and Phenakite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcedony and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.