Nephrite and Prehnite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.10
2.80-2.95
Fracture
Splintery, Granular, Splintery, Granular, Gemstones (2009)
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Cleavage
Not Available
Distinct on [001]
Mohs Hardness
6-6.5
6-6.5
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Ca2Al2Si3O12(OH)
Nephrite and Prehnite Chemical Formula
While comparing Nephrite and Prehnite 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 Nephrite and Prehnite chemical formula.
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Nephrite and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nephrite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.