Danburite and Afghanite Physical Properties

Danburite

Afghanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.97-3.032.55-2.65

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

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

1.6 Cleavage

{001} Poor

Perfect {10 1 0}

1.7 Mohs Hardness

75.5-6

2 10

1.8 Chemical Composition

CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Danburite and Afghanite Chemical Formula

While comparing Danburite 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 Danburite and Afghanite chemical formula.

Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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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Danburite and Afghanite Specific Gravity

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