Kornerupine and Edenite Physical Properties

Kornerupine

Edenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.453.05-3.37

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Good on {110}

Good on (110)

1.7 Mohs Hardness

6.55-6

2 10

1.8 Chemical Composition

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

NaCa2Mg5Si7AlO22(OH)2

Kornerupine and Edenite Chemical Formula

While comparing Kornerupine and Edenite 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 Kornerupine and Edenite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Kornerupine and Edenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Edenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Edenite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 3.05-3.37 whereas that of Edenite is 3.05-3.37.