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Star Sapphire
Star Sapphire
☒

Neptunite
Neptunite
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Star Sapphire
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Neptunite

Star Sapphire and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.90-4.05
-
None
-9999
Al 2O 3Ulrich Henn and Claudio C.
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Star Sapphire and Neptunite Chemical Formula

While comparing Star Sapphire and Neptunite 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 Star Sapphire and Neptunite chemical formula.

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Star Sapphire and Neptunite Specific Gravity

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