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Cordierite
Cordierite

Amethyst
Amethyst



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Cordierite
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Amethyst

Cordierite and Amethyst Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Cordierite and Amethyst Chemical Formula

While comparing Cordierite 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 Cordierite and Amethyst chemical formula.

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Cordierite and Amethyst Specific Gravity

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