Coral and Neptunite Physical Properties

Coral

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

2.60-2.70

3.19-3.23

1.5 Fracture

Irregular, Irregular, 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

3-4

5-6

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Coral and Neptunite Chemical Formula

While comparing Coral 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 Coral and Neptunite chemical formula.

Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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Coral and Neptunite Specific Gravity

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