Gahnospinel and Sard Physical Properties

Gahnospinel

Sard

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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

3.65-4.552.58-2.63

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

None, but may exhibit slight parting

Not Available

1.7 Mohs Hardness

7.5-86.5-7

2 10

1.8 Chemical Composition

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

SiO 2Ulrich Henn and Claudio C.

Gahnospinel and Sard Chemical Formula

While comparing Gahnospinel and Sard 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 Gahnospinel and Sard chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Compare Blue Gemstones

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel Vs Hydrogrossular

Gahnospinel and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnospinel and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Sard Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 2.58-2.63 whereas that of Sard is 2.58-2.63.