Wardite and Obsidian Physical Properties

Wardite and Obsidian Chemical Formula

While comparing Wardite 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 Wardite and Obsidian chemical formula.

• Chemical formula of Wardite- NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Obsidian- SiO2

Wardite and Obsidian Specific Gravity

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