Cuprite and Chalcedony Physical Properties

Cuprite

Chalcedony

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.85-6.15

2.55-2.70

1.5 Fracture

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

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

Fair in four directions forming octahedrons

Absent

1.7 Mohs Hardness

3.5-4

6.5-7

1.8 Chemical Composition

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

SiO₂

Cuprite and Chalcedony Chemical Formula

While comparing Cuprite and Chalcedony 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 Cuprite and Chalcedony chemical formula.

Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Chalcedony- SiO₂

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Cuprite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cuprite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cuprite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Cuprite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.