Fire Opal and Erythrite Physical Properties

Fire Opal

Erythrite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.97-2.223.06

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Co3(AsO4)2•8(H2O)

Fire Opal and Erythrite Chemical Formula

While comparing Fire Opal and Erythrite 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 Fire Opal and Erythrite chemical formula.

Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

Compare Red Gemstones

Fire Opal Vs Garnet

Fire Opal Vs Hackmanite

Fire Opal Vs Hexagonite

Fire Opal and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fire Opal and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 3.06 whereas that of Erythrite is 3.06.