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Pearl
Pearl

Lazurite
Lazurite



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Pearl and Lazurite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.60-2.85
2.75
1.5 Fracture
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
none
Imperfect on {110}
1.7 Mohs Hardness
2.5-4.5
5.5
1.8 Chemical Composition
Not Available
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Pearl and Lazurite Chemical Formula

While comparing Pearl 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 Pearl and Lazurite chemical formula.

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  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Pearl and Lazurite Specific Gravity

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