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Precious Opal
Precious Opal

Star Sapphire
Star Sapphire



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Precious Opal
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Star Sapphire

Precious Opal and Star Sapphire Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 · nH 2OGemdat.org , Management Team (2012)
 
-
-
-
3.90-4.05
-
None
-9999
Al 2O 3Ulrich Henn and Claudio C.

Precious Opal and Star Sapphire Chemical Formula

While comparing Precious Opal and Star Sapphire 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 Precious Opal and Star Sapphire chemical formula.

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Precious Opal and Star Sapphire Specific Gravity

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