Home
Gemstones


Lapis lazuli and Nephrite Physical Properties


Nephrite and Lapis lazuli Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.50-3.00   
2.90-3.10   

Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)   
Splintery, Granular, Splintery, Granular, Gemstones (2009)   

Cleavage
3,6   
Not Available   

Mohs Hardness
5.5   
6-6.5   

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   

Optical Properties >>
<< Astrology

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.

Compare Gems for Sagittarius

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.

Gems for Sagittarius

Gems for Sagittarius


Compare Gems for Sagittarius