Emerald and Kornerupine Physical Properties

Emerald

Kornerupine

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.783.25-3.45

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Imperfect on the [0001]

Good on {110}

1.7 Mohs Hardness

7.5-86.5

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

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

Emerald and Kornerupine Chemical Formula

While comparing Emerald 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 Emerald and Kornerupine chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
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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Emerald and Kornerupine Specific Gravity

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