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Lapis lazuli
Lapis lazuli

Nephrite
Nephrite



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Lapis lazuli
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Nephrite

Lapis lazuli and Nephrite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.50-3.002.90-3.10
Amber
1 7.18
1.5 Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Splintery, Granular, Splintery, Granular, Gemstones (2009)
1.6 Cleavage
3,6
Not Available
1.7 Mohs Hardness
5.56-6.5
Amber
2 10
1.8 Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Lapis lazuli and Nephrite Chemical Formula

While comparing Lapis lazuli and Nephrite 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 Nephrite 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
  • Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Lapis lazuli and Nephrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.