Erythrite and Prasiolite Physical Properties

Erythrite

Prasiolite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.65

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

Not Available7

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

SiO 2Ulrich Henn and Claudio C.

Erythrite and Prasiolite Chemical Formula

While comparing Erythrite and Prasiolite 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 Prasiolite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.

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Erythrite and Prasiolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Prasiolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Prasiolite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.65 whereas that of Prasiolite is 2.65.