Kornerupine and Obsidian Physical Properties

Kornerupine

Obsidian

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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

3.25-3.452.35-2.60

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

Good on {110}

Not Available

1.7 Mohs Hardness

6.55-5.5

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

Not Available

Kornerupine and Obsidian Chemical Formula

While comparing Kornerupine and Obsidian 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 Obsidian 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

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Kornerupine and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.