Nepheline and Moldavite Physical Properties

Nepheline

Moldavite

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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

2.55-2.652.32-2.38

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

[1010] Poor

Not Available

1.7 Mohs Hardness

5-65.5

2 10

1.8 Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Nepheline and Moldavite Chemical Formula

While comparing Nepheline and Moldavite 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 Nepheline and Moldavite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

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Nepheline and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.