Phenakite and Obsidian Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
2.35-2.60
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
Not Available
Mohs Hardness
7.5-8
5-5.5
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Phenakite and Obsidian Chemical Formula
While comparing Phenakite 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 Phenakite and Obsidian chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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Phenakite and Obsidian Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.