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Bustamite and Amethyst Physical Properties


Amethyst and Bustamite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Partly soluble in HCl.   
insoluble in common solvents   

Durability
Not Available   
Not Available   

Specific Gravity
3.32-3.43   
2.65   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor   
Indiscernible   

Mohs Hardness
5.5-6   
7   

Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
SiO2   

Optical Properties >>
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Bustamite and Amethyst Chemical Formula

While comparing Bustamite and Amethyst 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 Bustamite and Amethyst chemical formula.

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Bustamite and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.65 whereas that of Amethyst is 2.65.

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