Pietersite and Spinel Physical Properties

Pietersite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.64-3.66

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

None, but may exhibit slight parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Not Available

MgAl₂O₄

Pietersite and Spinel Chemical Formula

While comparing Pietersite and Spinel 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 Pietersite and Spinel chemical formula.

Chemical formula of Spinel- MgAl₂O₄

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Pietersite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pietersite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pietersite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Pietersite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.