Home
Gemstones


Topaz and Feldspar Physical Properties


Feldspar and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
2.56-2.75   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)   

Cleavage
[001] Perfect   
two or three   

Mohs Hardness
8   
6-6.5   

Chemical Composition
Al2SiO4(F,OH)2   
Not Available   

Optical Properties >>
<< Astrology

Topaz and Feldspar Chemical Formula

While comparing Topaz and Feldspar 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 Topaz and Feldspar chemical formula.

Compare Gems for Sagittarius

Topaz and Feldspar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Feldspar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Feldspar Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.56-2.75 whereas that of Feldspar is 2.56-2.75.

Gems for Sagittarius

Gems for Sagittarius


Compare Gems for Sagittarius