Star Sapphire and Hematite Physical Properties

Star Sapphire

Hematite

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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

3.90-4.055.00-5.30

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Not Available

None, may show partings on {0001} and {10 1 1}

1.7 Mohs Hardness

Not Available6

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

Fe 2O 3Arthur Thomas , Gemstones (2009)

Star Sapphire and Hematite Chemical Formula

While comparing Star Sapphire and Hematite 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 Hematite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Star Sapphire Vs Tourmaline

Star Sapphire Vs Verdite

Star Sapphire Vs Tortoiseshell

Star Sapphire and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Hematite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 5.00-5.30 whereas that of Hematite is 5.00-5.30.