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Afghanite and Brazilianite Physical Properties


Brazilianite and Afghanite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.55-2.65   
2.98-2.99   

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

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

Mohs Hardness
5.5-6   
5.5   

Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)   
NaAl 3(PO 4) 2(OH) 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Afghanite and Brazilianite Chemical Formula

While comparing Afghanite and Brazilianite 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 Afghanite and Brazilianite chemical formula.

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Afghanite and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.

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