Chrome-Chalcedony and Gypsum Physical Properties

Chrome-Chalcedony

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

2.55-2.702.20-2.40

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

6.5-72

2 10

1.8 Chemical Composition

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

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

Chrome-Chalcedony and Gypsum Chemical Formula

While comparing Chrome-Chalcedony 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 Chrome-Chalcedony and Gypsum chemical formula.

Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Chrome-Chalcedony and Gypsum Specific Gravity

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