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Achroite
Achroite

Amethyst
Amethyst



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Achroite
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Amethyst

Achroite and Amethyst Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.90-3.40
Uneven, ConchoidalWalter Schumann
Indiscernible
7-7.5
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Achroite and Amethyst Chemical Formula

While comparing Achroite 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 Achroite and Amethyst chemical formula.

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Achroite and Amethyst Specific Gravity

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