Gahnospinel and Sellaite Physical Properties

Gahnospinel

Sellaite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.65-4.553.14-3.16

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

1.6 Cleavage

None, but may exhibit slight parting

Perfect on {010} and {110}

1.7 Mohs Hardness

7.5-85-5.5

2 10

1.8 Chemical Composition

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

MgF 2Ulrich Henn and Claudio C.

Gahnospinel and Sellaite Chemical Formula

While comparing Gahnospinel and Sellaite 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 Sellaite chemical formula.

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

Compare Blue Gemstones

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Hydrogrossular

Gahnospinel and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnospinel and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.