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Emerald and Lazurite Physical Properties


Lazurite and Emerald Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Hard   
Not Available   

Specific Gravity
2.67-2.78   
2.75   

Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)   
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle   

Cleavage
Imperfect on the [0001]   
Imperfect on {110}   

Mohs Hardness
7.5-8   
5.5   

Chemical Composition
Be3Al2SiO6   
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.   

Optical Properties >>
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Emerald and Lazurite Chemical Formula

While comparing Emerald and Lazurite 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 Emerald and Lazurite chemical formula.

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Emerald and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.75 whereas that of Lazurite is 2.75.

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