Home
Gemstones


Poudretteite and Grandidierite Physical Properties


Grandidierite and Poudretteite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.51-2.53   
2.85-3.00   

Fracture
Conchoidal, Splintery   
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven   

Cleavage
None   
Perfect   

Mohs Hardness
5   
7.5   

Chemical Composition
KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)   
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.   

Optical Properties >>
<< Astrology

Poudretteite and Grandidierite Chemical Formula

While comparing Poudretteite and Grandidierite 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 Poudretteite and Grandidierite chemical formula.

Compare Violet Gemstones

Poudretteite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.

Violet Gemstones

Violet Gemstones


Compare Violet Gemstones