Sellaite and Helenite Physical Properties

Sellaite and Helenite Chemical Formula

While comparing Sellaite and Helenite 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 Helenite chemical formula.

• Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
• Chemical formula of Helenite- SiO₂

Sellaite and Helenite Specific Gravity

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