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Williamsite
Williamsite

Lazurite
Lazurite



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Williamsite
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Lazurite

Williamsite and Lazurite Physical Properties

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
2.51-2.632.75
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Handbook of mineralogy (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Not Available
Imperfect on {110}
1.7 Mohs Hardness
45.5
Amber
2 10
1.8 Chemical Composition
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Williamsite and Lazurite Chemical Formula

While comparing Williamsite 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 Williamsite and Lazurite chemical formula.

  • Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Williamsite and Lazurite Specific Gravity

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