Realgar and Lazurite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.56
2.75
Fracture
(e.g. graphite).
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{010} Good
Imperfect on {110}
Mohs Hardness
Not Available
5.5
Chemical Composition
AsSMichael OâDonoghue , 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 OâDonoghue , 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.