Gahnospinel and Amethyst Physical Properties

Gahnospinel

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

3.65-4.552.65

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

None, but may exhibit slight parting

Indiscernible

1.7 Mohs Hardness

7.5-87

2 10

1.8 Chemical Composition

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

SiO₂

Gahnospinel and Amethyst Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Amethyst chemical formula.

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

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Gahnospinel and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnospinel and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 2.65 whereas that of Amethyst is 2.65.