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Fayalite and Obsidian Physical Properties


Obsidian and Fayalite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.392   
2.35-2.60   

Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   
Conchoidal, ConchoidalWalter Schumann, Conchoidal   

Cleavage
{010} moderate, {100} imperfect   
Not Available   

Mohs Hardness
6.5-7   
5-5.5   

Chemical Composition
Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)   
Not Available   

Optical Properties >>
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Fayalite and Obsidian Chemical Formula

While comparing Fayalite 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 Fayalite and Obsidian chemical formula.

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Fayalite and Obsidian Specific Gravity

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

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