Viridine and Afghanite Physical Properties

Viridine

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

3.05-3.21

2.55-2.65

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Not Available

Perfect {10 1 0}

1.7 Mohs Hardness

7-7.5

5.5-6

1.8 Chemical Composition

(Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)

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

Viridine and Afghanite Chemical Formula

While comparing Viridine 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 Viridine and Afghanite chemical formula.

Chemical formula of Viridine- (Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)
Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Compare Gems Found in South Asia

Viridine Vs Iolite

Viridine Vs Idocrase

Viridine Vs Kyanite

Viridine and Afghanite Specific Gravity

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