Obsidian and Kornerupine Physical Properties

Obsidian

Kornerupine

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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

2.35-2.603.25-3.45

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Conchoidal

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

1.6 Cleavage

Not Available

Good on {110}

1.7 Mohs Hardness

5-5.56.5

2 10

1.8 Chemical Composition

Not Available

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

Obsidian and Kornerupine Chemical Formula

While comparing Obsidian 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 Obsidian and Kornerupine 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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Obsidian and Kornerupine Specific Gravity

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