Schorl and Star Sapphire Physical Properties

Schorl

Star Sapphire

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.18-3.22

Uneven, Conchoidal

{1011} Indistinct

-9999

Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

3.90-4.05

None

-9999

Al 2O 3Ulrich Henn and Claudio C.

Schorl and Star Sapphire Chemical Formula

While comparing Schorl 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 Schorl and Star Sapphire chemical formula.

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Schorl and Star Sapphire Specific Gravity

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