Rhodochrosite and Star Sapphire Physical Properties

Rhodochrosite

Star Sapphire

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

3.90-4.05

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

3.5-4

Not Available

1.8 Chemical Composition

MnCO₃

Al 2O 3Ulrich Henn and Claudio C.

Rhodochrosite and Star Sapphire Chemical Formula

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

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

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Rhodochrosite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.