Sunstone and Gypsum Physical Properties

Sunstone

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

2.62-2.652.20-2.40

1 7.18

1.5 Fracture

Gemstones of the world (2001)

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

1.6 Cleavage

001

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

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

Sunstone and Gypsum Chemical Formula

While comparing Sunstone 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 Sunstone and Gypsum chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Sunstone and Gypsum Specific Gravity

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