Epidote and Nephrite Physical Properties
Specific Gravity
3.25-3.50
2.90-3.10
Fracture
Conchoidal, Fibrous
Splintery, Granular
Cleavage
{001} perfect and {100} imperfect
None
Chemical Composition
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael 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
Epidote and Nephrite Chemical Formula
While comparing Epidote 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 Epidote and Nephrite chemical formula.
- Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael 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
Epidote and Nephrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Epidote and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Epidote and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Epidote is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.