Nepheline and Peridot Physical Properties

Nepheline

Peridot

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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

2.55-2.651.54-1.55

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

[1010] Poor

Poor

1.7 Mohs Hardness

5-66.5-7

2 10

1.8 Chemical Composition

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

(Mg,Fe)₂SiO₄

Nepheline and Peridot Chemical Formula

While comparing Nepheline and Peridot 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 Peridot chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Nepheline and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Peridot Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 1.54-1.55 whereas that of Peridot is 1.54-1.55.