Amethyst and Gahnospinel Physical Properties

Amethyst

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.65-4.55

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indiscernible

None, but may exhibit slight parting

1.7 Mohs Hardness

77.5-8

2 10

1.8 Chemical Composition

SiO₂

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Amethyst and Gahnospinel Chemical Formula

While comparing Amethyst and Gahnospinel 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 Amethyst and Gahnospinel chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Amethyst and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.