Afghanite and Pearl Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
2.60-2.85
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
Cleavage
Perfect {10 1 0}
none
Mohs Hardness
5.5-6
2.5-4.5
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Not Available
Afghanite and Pearl Chemical Formula
While comparing Afghanite and Pearl 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 Pearl chemical formula.
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
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Afghanite and Pearl Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Pearl Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.60-2.85 whereas that of Pearl is 2.60-2.85.