Agate Opal and Neptunite Physical Properties

Agate Opal

Neptunite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.503.19-3.23

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

Not Available

{110} good

1.7 Mohs Hardness

5.5-6.55-6

2 10

1.8 Chemical Composition

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

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

Agate Opal and Neptunite Chemical Formula

While comparing Agate Opal and Neptunite 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 Agate Opal and Neptunite chemical formula.

Chemical formula of Agate Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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Agate Opal Vs Anorthite

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Agate Opal and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agate Opal and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate Opal and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Agate Opal is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.