Nephrite and Kyanite Physical Properties

Nephrite and Kyanite Chemical Formula

While comparing Nephrite and Kyanite 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 Kyanite 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 Kyanite- Al2SiO5

Nephrite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.