Star Sapphire and Charlesite Physical Properties

Star Sapphire

Charlesite

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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

3.90-4.051.79

1 7.18

1.5 Fracture

Not Available

Irregular/uneven, Brittle, Metallic

1.6 Cleavage

Not Available

Perfect on {10bar10}

1.7 Mohs Hardness

Not Available2.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Star Sapphire and Charlesite Chemical Formula

While comparing Star Sapphire and Charlesite 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 Charlesite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

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Star Sapphire and Charlesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 1.79 whereas that of Charlesite is 1.79.