Malachite and Obsidian Physical Properties

Malachite and Obsidian Chemical Formula

While comparing Malachite 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 Malachite and Obsidian chemical formula.

• Chemical formula of Malachite- Cu₂CO₃(OH)₂
• Chemical formula of Obsidian- SiO2

Malachite and Obsidian Specific Gravity

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