Sardonyx and Purpurite Physical Properties

Sardonyx and Purpurite Chemical Formula

While comparing Sardonyx and Purpurite 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 Sardonyx and Purpurite chemical formula.

• Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.
• Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Sardonyx and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sardonyx and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sardonyx and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Sardonyx is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.