Verdite and Afghanite Physical Properties

Verdite

Afghanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.80-3.02.55-2.65

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

{110} Good

Perfect {10 1 0}

1.7 Mohs Hardness

35.5-6

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Verdite and Afghanite Chemical Formula

While comparing Verdite 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 Verdite and Afghanite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
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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Verdite and Afghanite Specific Gravity

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