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Spinel
Spinel

Amethyst
Amethyst



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Spinel
X
Amethyst

Spinel and Amethyst Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Spinel and Amethyst Chemical Formula

While comparing Spinel 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 Spinel and Amethyst chemical formula.

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Spinel and Amethyst Specific Gravity

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