Humite and Star Sapphire Physical Properties

Humite

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

3.20-3.323.90-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal

Not Available

1.6 Cleavage

Poor

Not Available

1.7 Mohs Hardness

6-6.5Not Available

2 10

1.8 Chemical Composition

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

Al 2O 3Ulrich Henn and Claudio C.

Humite and Star Sapphire Chemical Formula

While comparing Humite 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 Humite and Star Sapphire chemical formula.

Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

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Humite and Star Sapphire Specific Gravity

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