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Brazilianite and Afghanite Physical Properties


Afghanite and Brazilianite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.98-2.99   
2.55-2.65   

Fracture
Conchoidal, Gems   
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle   

Cleavage
(010) Distinct to good   
Perfect {10 1 0}   

Mohs Hardness
5.5   
5.5-6   

Chemical Composition
NaAl 3(PO 4) 2(OH) 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
(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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Brazilianite and Afghanite Chemical Formula

While comparing Brazilianite 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 Brazilianite and Afghanite chemical formula.

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Brazilianite and Afghanite Specific Gravity

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

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Green Gemstones


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