Star Sapphire and Gedrite Physical Properties

Star Sapphire

Gedrite

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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

3.90-4.053.15-3.259

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

1.7 Mohs Hardness

Not Available5.5-6

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Star Sapphire and Gedrite Chemical Formula

While comparing Star Sapphire and Gedrite 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 Gedrite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Star Sapphire and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.