Sapphirine and Gahnospinel Physical Properties

Sapphirine

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

3.40-3.583.65-4.55

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} Perfect

None, but may exhibit slight parting

1.7 Mohs Hardness

7.57.5-8

2 10

1.8 Chemical Composition

(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Sapphirine and Gahnospinel Chemical Formula

While comparing Sapphirine 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 Sapphirine and Gahnospinel chemical formula.

Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Sapphirine and Gahnospinel Specific Gravity

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