Gedrite and Obsidian Physical Properties

Gedrite and Obsidian Chemical Formula

While comparing Gedrite and Obsidian 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 Gedrite and Obsidian chemical formula.

• Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
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Gedrite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gedrite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.