Star Sapphire and Chrome Pyrope Physical Properties

Star Sapphire

Chrome Pyrope

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.90-4.053.62-3.80

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

Star Sapphire and Chrome Pyrope Chemical Formula

While comparing Star Sapphire and Chrome Pyrope 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 Chrome Pyrope chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Chrome Pyrope- Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

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Star Sapphire and Chrome Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Chrome Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Chrome Pyrope Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.62-3.80 whereas that of Chrome Pyrope is 3.62-3.80.