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Peridot and Lapis lazuli Physical Properties


Lapis lazuli and Peridot Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.54-1.55   
2.50-3.00   

Fracture
Conchoidal   
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
Poor   
3,6   

Mohs Hardness
6.5-7   
5.5   

Chemical Composition
(Mg,Fe)2SiO4   
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4   

Optical Properties >>
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Peridot and Lapis lazuli Chemical Formula

While comparing Peridot and Lapis lazuli 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 Peridot and Lapis lazuli chemical formula.

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Peridot and Lapis lazuli Specific Gravity

Another important criteria for qualitative analysis of gemstones is Peridot and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Peridot and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Peridot is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.

Semi Precious

Semi Precious


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