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Ruby
Ruby

Cuprite
Cuprite



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Ruby
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Cuprite

Ruby and Cuprite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.97-4.055.85-6.15
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

No true cleavage
Fair in four directions forming octahedrons

Mohs Hardness

93.5-4
2 10
👆🏻

Chemical Composition

Al 2 O 3
Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Cuprite Chemical Formula

While comparing Ruby 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 Ruby and Cuprite chemical formula.

  • Chemical formula of Ruby- Al 2 O 3
  • Chemical formula of Cuprite- Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Cuprite Specific Gravity

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