Nephrite and Common Opal Physical Properties

Nephrite

Common Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.101.98-2.50

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6-6.55.5-6.5

2 10

1.8 Chemical Composition

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

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Nephrite and Common Opal Chemical Formula

While comparing Nephrite and Common 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 Nephrite and Common Opal 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 Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Green Gemstones

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Nephrite Vs Pearl

Nephrite Vs Pezzottaite

Nephrite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.