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Boulder Opal
Boulder Opal

Cuprite
Cuprite



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Boulder Opal
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Cuprite

Boulder Opal and Cuprite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

1.98-2.255.85-6.15
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

None
Fair in four directions forming octahedrons

Mohs Hardness

5-6.53.5-4
2 10
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Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.
Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boulder Opal and Cuprite Chemical Formula

While comparing Boulder 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 Boulder Opal and Cuprite chemical formula.

  • Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Cuprite- Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boulder Opal and Cuprite Specific Gravity

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