Nepheline and Amethyst Physical Properties

Nepheline

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

2.65

1.5 Fracture

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

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

1.6 Cleavage

[1010] Poor

Indiscernible

1.7 Mohs Hardness

5-6

1.8 Chemical Composition

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

SiO₂

Nepheline and Amethyst Chemical Formula

While comparing Nepheline and Amethyst 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 Amethyst chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Amethyst- SiO₂

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Nepheline and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.65 whereas that of Amethyst is 2.65.