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Amethyst
Amethyst

Lazurite
Lazurite



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Amethyst
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Lazurite

Amethyst and Lazurite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
insoluble in common solvents
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.652.75
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Indiscernible
Imperfect on {110}
1.7 Mohs Hardness
75.5
Amber
2 10
1.8 Chemical Composition
SiO2
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Amethyst and Lazurite Chemical Formula

While comparing Amethyst 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 Amethyst and Lazurite chemical formula.

  • Chemical formula of Amethyst- SiO2
  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Amethyst and Lazurite Specific Gravity

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