Star Sapphire and Narsarsukite Physical Properties

Star Sapphire

Narsarsukite

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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

3.90-4.052.72-2.83

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

Not Available

Good on {100} and {110}

1.7 Mohs Hardness

Not Available6-7

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

Star Sapphire and Narsarsukite Chemical Formula

While comparing Star Sapphire and Narsarsukite 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 Star Sapphire and Narsarsukite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

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Star Sapphire and Narsarsukite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.