Gahnite and Rock Crystal Physical Properties

Gahnite and Rock Crystal Chemical Formula

While comparing Gahnite 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 Gahnite and Rock Crystal chemical formula.

• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Gahnite and Rock Crystal Specific Gravity

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