Obsidian and Smithsonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.35-2.60
4.00-4.65
Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Cleavage
Not Available
Perfect on [1011]
Mohs Hardness
5-5.5
5-5.5
Chemical Composition
Not Available
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Obsidian and Smithsonite Chemical Formula
While comparing Obsidian and Smithsonite 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 Smithsonite chemical formula.
>- Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Obsidian and Smithsonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Obsidian and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.