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Riebeckite and Lapis lazuli Physical Properties


Lapis lazuli and Riebeckite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.28-3.44   
2.50-3.00   

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

Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}   
3,6   

Mohs Hardness
5.0-6.0   
5.5   

Chemical Composition
Not Available   
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4   

Optical Properties >>
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Riebeckite and Lapis lazuli Chemical Formula

While comparing Riebeckite 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 Riebeckite and Lapis lazuli chemical formula.

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Riebeckite and Lapis lazuli Specific Gravity

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

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