Erythrite and Chrome-Chalcedony Physical Properties

Erythrite

Chrome-Chalcedony

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.55-2.70

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Not Available

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

Not Available

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Chrome-Chalcedony Chemical Formula

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

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

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Erythrite and Chrome-Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.