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Star Sapphire
Star Sapphire

Danburite
Danburite



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Star Sapphire
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Danburite

Star Sapphire and Danburite 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
-
-
2.97-3.03
Uneven, ConchoidalWalter Schumann, Conchoidal
{001} Poor
7
CaB 2(SiO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Star Sapphire and Danburite Chemical Formula

While comparing Star Sapphire and Danburite 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 Danburite chemical formula.

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Star Sapphire and Danburite Specific Gravity

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