Nephrite and Bustamite Physical Properties

Nephrite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.103.32-3.43

1 7.18

1.5 Fracture

Splintery, Granular, Splintery, Granular, Gemstones (2009)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

6-6.55.5-6

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

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

Nephrite and Bustamite Chemical Formula

While comparing Nephrite 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 Nephrite and Bustamite chemical formula.

Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Nephrite and Bustamite Specific Gravity

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