Onyx and Girasol Physical Properties

Onyx and Girasol Chemical Formula

While comparing Onyx and Girasol 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 Onyx and Girasol chemical formula.

• Chemical formula of Onyx- SiO₂
• Chemical formula of Girasol- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Onyx and Girasol Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Girasol Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Girasol Optical Properties during the identification of gemstone. Specific gravity of Onyx is 1.98-2.50 whereas that of Girasol is 1.98-2.50.