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Coral
Coral

Howlite
Howlite



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Coral
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Howlite

Coral and Howlite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.60-2.70
Irregular
None
3-4
CaCO 3Ulrich Henn and Claudio C.
 
-
-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Coral and Howlite Chemical Formula

While comparing Coral and Howlite 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 Howlite chemical formula.

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Coral and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral Vs Howlite during the identification of gemstone. Specific gravity of Coral is whereas that of Howlite is .