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Afghanite
Afghanite

Howlite
Howlite



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Afghanite
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Howlite

Afghanite and Howlite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.65
Conchoidal
Perfect {10 1 0}
5.5-6
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
 
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-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Afghanite and Howlite Chemical Formula

While comparing Afghanite and Howlite 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 Howlite chemical formula.

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Afghanite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite Vs Howlite during the identification of gemstone. Specific gravity of Afghanite is whereas that of Howlite is .