Sellaite and Gahnite Physical Properties

Sellaite and Gahnite Chemical Formula

While comparing Sellaite and Gahnite 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 Sellaite and Gahnite chemical formula.

• Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Sellaite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.