Lapis lazuli and Baryte Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.50-3.00
  
4.3-5
  
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Irregular/uneven
  
Cleavage
3,6
  
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
  
Mohs Hardness
5.5
  
3-3.5
  
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
  
Not Available
  
Lapis lazuli and Baryte Chemical Formula
While comparing Lapis lazuli and Baryte 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 Lapis lazuli and Baryte chemical formula.
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
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Lapis lazuli and Baryte Specific Gravity
Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Baryte Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Baryte Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 4.3-5 whereas that of Baryte is 4.3-5.