Carnelian and Gahnospinel Physical Properties

Carnelian

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

2.58-2.64

3.65-4.55

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Absent

None, but may exhibit slight parting

1.7 Mohs Hardness

6.5-7

7.5-8

1.8 Chemical Composition

SiO₂

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

Carnelian and Gahnospinel Chemical Formula

While comparing Carnelian 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 Carnelian and Gahnospinel chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Carnelian and Gahnospinel Specific Gravity

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