Phenakite and Nephrite Physical Properties
Specific Gravity
2.90-2.98
2.90-3.10
Fracture
Conchoidal, ConchoidalWalter Schumann
Splintery, Granular
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
None
Mohs Hardness
7.5-8
6-6.5
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Phenakite and Nephrite Chemical Formula
While comparing Phenakite and Nephrite 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 Nephrite chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Phenakite and Nephrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.