Pumpellyite and Rock Crystal Physical Properties

Pumpellyite and Rock Crystal Chemical Formula

While comparing Pumpellyite and Rock Crystal 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 Pumpellyite and Rock Crystal chemical formula.

• Chemical formula of Pumpellyite- Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.
• Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Pumpellyite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pumpellyite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pumpellyite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Pumpellyite is 2.65 whereas that of Rock Crystal is 2.65.