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Forsterite and Afghanite Physical Properties


Afghanite and Forsterite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.23-3.26   
2.55-2.65   

Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle   

Cleavage
Perfect on {010} imperfect on {100}   
Perfect {10 1 0}   

Mohs Hardness
6.5-7   
5.5-6   

Chemical Composition
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)   
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Forsterite and Afghanite Chemical Formula

While comparing Forsterite and Afghanite 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 Forsterite and Afghanite chemical formula.

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Forsterite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.

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