Amazonite and Gypsum Physical Properties

Amazonite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.572.20-2.40

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

6-6.52

2 10

1.8 Chemical Composition

KAlSi₃O₈

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Amazonite and Gypsum Chemical Formula

While comparing Amazonite and Gypsum 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 Amazonite and Gypsum chemical formula.

Chemical formula of Amazonite- KAlSi₃O₈
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Amazonite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amazonite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amazonite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Amazonite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.