Erythrite and Celestine Physical Properties

Erythrite

Celestine

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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

3.063.90-4.00

1 7.18

1.5 Fracture

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

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Perfect on {001}, good on {210}, poor on {010}

1.7 Mohs Hardness

Not Available3-3.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Erythrite and Celestine Chemical Formula

While comparing Erythrite and Celestine 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 Celestine chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Erythrite and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.