Chalcedony and Bustamite Physical Properties

Chalcedony

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.703.32-3.43

1 7.18

1.5 Fracture

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Absent

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

1.7 Mohs Hardness

6.5-75.5-6

2 10

1.8 Chemical Composition

SiO₂

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Chalcedony and Bustamite Chemical Formula

While comparing Chalcedony and Bustamite 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 Chalcedony and Bustamite chemical formula.

Chemical formula of Chalcedony- SiO₂
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Chalcedony and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chalcedony and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.