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Cinnabar
Cinnabar

Amethyst
Amethyst



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Cinnabar
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Amethyst

Cinnabar and Amethyst Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Slightly sectile
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
2
Uneven
Prismatic {10 1 0}, perfect
2-2.5
HgSMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
insoluble in common solvents
-
2.65
Conchoidal, ConchoidalWalter Schumann
Indiscernible
7
SiO2

Cinnabar and Amethyst Chemical Formula

While comparing Cinnabar 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 Cinnabar and Amethyst chemical formula.

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Cinnabar and Amethyst Specific Gravity

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