Alexandrite and Gahnospinel Physical Properties

Alexandrite

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

3.69-3.813.65-4.55

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

1,1 ; 3,2.

None, but may exhibit slight parting

1.7 Mohs Hardness

8.57.5-8

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Gahnospinel Chemical Formula

While comparing Alexandrite 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 Alexandrite and Gahnospinel chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Alexandrite and Gahnospinel Specific Gravity

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