Afghanite and Aquamarine Physical Properties

Afghanite

Aquamarine

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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

2.55-2.65

2.66-2.80

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect {10 1 0}

3,1 basal

1.7 Mohs Hardness

5.5-6

7.5-8

1.8 Chemical Composition

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

Be₃Al₂SiO₆

Afghanite and Aquamarine Chemical Formula

While comparing Afghanite and Aquamarine 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 Aquamarine 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)
Chemical formula of Aquamarine- Be₃Al₂SiO₆

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Afghanite and Aquamarine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Aquamarine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Aquamarine Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.66-2.80 whereas that of Aquamarine is 2.66-2.80.