Home
Gemstones


Lapis lazuli and Prehnite Physical Properties


Prehnite and Lapis lazuli Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.50-3.00   
2.80-2.95   

Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)   
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic   

Cleavage
3,6   
Distinct on [001]   

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   
Ca2Al2Si3O12(OH)   

Optical Properties >>
<< Astrology

Lapis lazuli and Prehnite Chemical Formula

While comparing Lapis lazuli and Prehnite 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 Prehnite chemical formula.

Compare Gems for Sagittarius

Lapis lazuli and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lapis lazuli and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lapis lazuli and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Lapis lazuli is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.

Gems for Sagittarius

Gems for Sagittarius


Compare Gems for Sagittarius