Pargasite and Nephrite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.04-3.26
2.90-3.10
Fracture
Splintery, Brittle, Uneven
Splintery, Granular, Splintery, Granular, Gemstones (2009)
Cleavage
{110} perfect
Not Available
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Pargasite and Nephrite Chemical Formula
While comparing Pargasite 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 Pargasite and Nephrite chemical formula.
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Pargasite and Nephrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pargasite and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.