Star Sapphire and Rhodochrosite Physical Properties

Star Sapphire

Rhodochrosite

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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

3.90-4.053.0-3.3

1 7.18

1.5 Fracture

Not Available

Uneven, Conchoidal, Conchoidal to uneven, Brittle

1.6 Cleavage

Not Available

On {10 1 1} perfect; parting on {10 1 2}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

MnCO₃

Star Sapphire and Rhodochrosite Chemical Formula

While comparing Star Sapphire and Rhodochrosite 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 Rhodochrosite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Rhodochrosite- MnCO₃

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Star Sapphire and Rhodochrosite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Rhodochrosite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Rhodochrosite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.0-3.3 whereas that of Rhodochrosite is 3.0-3.3.