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Realgar
Realgar

Lazurite
Lazurite



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Realgar
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Lazurite

Realgar 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
3.562.75
Amber
1 7.18
1.5 Fracture
(e.g. graphite).
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
{010} Good
Imperfect on {110}
1.7 Mohs Hardness
Not Available5.5
Amber
2 10
1.8 Chemical Composition
AsSMichael O’Donoghue , Gems, Sixth Edition (2006)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Realgar and Lazurite Chemical Formula

While comparing Realgar 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 Realgar and Lazurite chemical formula.

  • Chemical formula of Realgar- AsSMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Realgar and Lazurite Specific Gravity

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