Star Sapphire and Erythrite Physical Properties

Star Sapphire

Erythrite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.053.06

1 7.18

1.5 Fracture

Not Available

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

1.6 Cleavage

Not Available

Perfect on {010}; poor on {100} and { 1 02}.

1.7 Mohs Hardness

Not AvailableNot Available

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Co3(AsO4)2•8(H2O)

Star Sapphire and Erythrite Chemical Formula

While comparing Star Sapphire and Erythrite 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 Erythrite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Star Sapphire and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.06 whereas that of Erythrite is 3.06.