Corundum and Sylvite Physical Properties

Corundum

Sylvite

Add ⊕

1 Physical Properties

1.2 Tenacity

Brittle

1.3 Solubility

insoluble

Soluble

1.5 Durability

Not Available

1.7 Specific Gravity

3.90-4.051.993

1 7.18

1.9 Fracture

Uneven, Uneven, Gems, Difficult, Fibrous

Uneven, Brittle

1.11 Cleavage

None – parting in 3 directions

Perfect on [100], [010], [001]

1.13 Mohs Hardness

92.5

2 10

1.15 Chemical Composition

Al 2O 3Arthur Thomas , Gemstones (2009)

Not Available

Corundum and Sylvite Chemical Formula

While comparing Corundum and Sylvite 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 Corundum and Sylvite chemical formula.

Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

Compare Violet Gemstones

Corundum Vs Hackmanite

Corundum Vs Hexagonite

Corundum Vs Garnet

Corundum and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Corundum and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 1.993 whereas that of Sylvite is 1.993.