Erythrite and Pearl Physical Properties

Erythrite

Pearl

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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

3.062.60-2.85

1 7.18

1.5 Fracture

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

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

none

1.7 Mohs Hardness

Not Available2.5-4.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

Not Available

Erythrite and Pearl Chemical Formula

While comparing Erythrite and Pearl 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 Pearl chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Erythrite Vs Polyhalite

Erythrite and Pearl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Pearl Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.60-2.85 whereas that of Pearl is 2.60-2.85.