Schorl and Star Sapphire Physical Properties

Schorl

Star Sapphire

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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

3.18-3.223.90-4.05

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

{1011} Indistinct

Not Available

1.7 Mohs Hardness

Not AvailableNot Available

2 10

1.8 Chemical Composition

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

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.

Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Black Gemstones

Schorl Vs Xenotime

Schorl Vs Snowflake Obsidian

Schorl Vs Triplite

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 and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Schorl is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.