Schorl and Nephrite Physical Properties

Schorl and Nephrite Chemical Formula

While comparing Schorl 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 Schorl and Nephrite chemical formula.

• Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
• Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Schorl and Nephrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.