Star Ruby and Cobaltite Physical Properties

Star Ruby

Cobaltite

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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

3.95-4.106.3

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Not Available

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

Not Available5.5

2 10

1.8 Chemical Composition

Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

CoAsSAnthony et al , Handbook of mineralogy (2001)

Star Ruby and Cobaltite Chemical Formula

While comparing Star Ruby and Cobaltite 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 Ruby and Cobaltite chemical formula.

Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Star Ruby Vs Tortoiseshell

Star Ruby Vs Topaz

Star Ruby Vs Tourmaline

Star Ruby and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 6.3 whereas that of Cobaltite is 6.3.