Fire Opal and Cuprite Physical Properties

Fire Opal

Cuprite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.97-2.225.85-6.15

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

Fair in four directions forming octahedrons

1.7 Mohs Hardness

6-6.53.5-4

2 10

1.8 Chemical Composition

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

Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fire Opal and Cuprite Chemical Formula

While comparing Fire Opal and Cuprite 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 Cuprite chemical formula.

Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

Fire Opal Vs Garnet

Fire Opal Vs Hexagonite

Fire Opal Vs Hackmanite

Fire Opal and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fire Opal and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.