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Nepheline
Nepheline

Sapphire
Sapphire



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Nepheline
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Sapphire

Nepheline and Sapphire Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
insoluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.653.95-4.03
Amber
1 7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
[1010] Poor
None, but may exhibit parting
1.7 Mohs Hardness
5-69
Amber
2 10
1.8 Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Al 2 O 3

Nepheline and Sapphire Chemical Formula

While comparing Nepheline and Sapphire 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 Sapphire chemical formula.

  • Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  • Chemical formula of Sapphire- Al 2 O 3

Nepheline and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.