Dioptase and Chalcedony Physical Properties

Dioptase

Chalcedony

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

3.25-3.352.55-2.70

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Uneven, Splintery, Conchoidal

Cleavage

Perfect in three directions

Absent

Mohs Hardness

56.5-7

2 10

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Chemical Composition

CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO₂

Dioptase and Chalcedony Chemical Formula

While comparing Dioptase 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 Dioptase and Chalcedony chemical formula.

Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Chalcedony- SiO₂

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Dioptase and Chalcedony Specific Gravity

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