Star Ruby and Gahnospinel Physical Properties

Star Ruby

Gahnospinel

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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

3.95-4.103.65-4.55

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

None, but may exhibit slight parting

1.7 Mohs Hardness

Not Available7.5-8

2 10

1.8 Chemical Composition

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

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Star Ruby and Gahnospinel Chemical Formula

While comparing Star Ruby and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Compare Blue Gemstones

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Star Ruby Vs Tortoiseshell

Star Ruby Vs Tourmaline

Star Ruby and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.