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Bustamite
Bustamite

Black Opal
Black Opal



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Bustamite
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Black Opal

Bustamite and Black Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Partly soluble in HCl.
-
3.32-3.43
Conchoidal
{100} perfect; {110} and {1 1 0} good; {010} poor
5.5-6
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Bustamite and Black Opal Chemical Formula

While comparing Bustamite and Black Opal 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 Black Opal chemical formula.

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Bustamite and Black Opal Specific Gravity

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