Spinel and Kornerupine Physical Properties

Spinel

Kornerupine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.663.25-3.45

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

None, but may exhibit slight parting

Good on {110}

1.7 Mohs Hardness

86.5

2 10

1.8 Chemical Composition

MgAl₂O₄

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Spinel and Kornerupine Chemical Formula

While comparing Spinel and Kornerupine 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 Spinel and Kornerupine chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Gems for Scorpio

Spinel Vs Ametrine

Spinel Vs Charoite

Spinel Vs Azurmalachite

Spinel and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Spinel is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.