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Afghanite
Afghanite

Amethyst
Amethyst



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Afghanite
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Amethyst

Afghanite and Amethyst Physical Properties

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)
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Afghanite and Amethyst Chemical Formula

While comparing Afghanite and Amethyst 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 Amethyst chemical formula.

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Afghanite and Amethyst Specific Gravity

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