Obsidian and Tortoiseshell Physical Properties

Obsidian and Tortoiseshell Chemical Formula

While comparing Obsidian and Tortoiseshell 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 Obsidian and Tortoiseshell chemical formula.

• Chemical formula of Obsidian- SiO2
• Chemical formula of Tortoiseshell- -

Obsidian and Tortoiseshell Specific Gravity

Another important criteria for qualitative analysis of gemstones is Obsidian and Tortoiseshell Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Tortoiseshell Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 1.25-1.35 whereas that of Tortoiseshell is 1.25-1.35.