Demantoid and Spinel Physical Properties

Demantoid

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

3.77-3.953.64-3.66

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

6.58

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

MgAl₂O₄

Demantoid and Spinel Chemical Formula

While comparing Demantoid 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 Demantoid and Spinel chemical formula.

Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Chemical formula of Spinel- MgAl₂O₄

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Demantoid and Spinel Specific Gravity

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