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Lazurite and Phenakite Physical Properties


Phenakite and Lazurite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.75   
2.90-2.98   

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

Cleavage
Imperfect on {110}   
Distinct on {11 2 0}, imperfect on {10 1 1}   

Mohs Hardness
5.5   
7.5-8   

Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.   
Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Lazurite and Phenakite Chemical Formula

While comparing Lazurite and Phenakite 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 Lazurite and Phenakite chemical formula.

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Lazurite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.

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