Coral and Dioptase Physical Properties

Coral

Dioptase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.703.25-3.35

1 7.18

1.5 Fracture

Irregular, Irregular, Gemstones of the world (2001)

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Not Available

Perfect in three directions

1.7 Mohs Hardness

3-45

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Coral and Dioptase Chemical Formula

While comparing Coral and Dioptase 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 Coral and Dioptase chemical formula.

Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Coral and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Coral is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.