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Lapis lazuli
Lapis lazuli

Spinel
Spinel



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Lapis lazuli
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Spinel

Lapis lazuli and Spinel Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.50-3.00
Uneven-Conchoidal, ConchoidalWalter Schumann
3,6
5.5
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4

Lapis lazuli and Spinel Chemical Formula

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

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Lapis lazuli and Spinel Specific Gravity

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