Goshenite and Afghanite Physical Properties

Goshenite

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

2.60-2.902.55-2.65

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

3,1 basal

Perfect {10 1 0}

1.7 Mohs Hardness

7.5-85.5-6

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

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

Goshenite and Afghanite Chemical Formula

While comparing Goshenite 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 Goshenite and Afghanite chemical formula.

Chemical formula of Goshenite- Be₃Al₂SiO₆
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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Goshenite and Afghanite Specific Gravity

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