Kornerupine and Prehnite Physical Properties

Kornerupine

Prehnite

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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

3.25-3.452.80-2.95

1 7.18

1.5 Fracture

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

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Good on {110}

Distinct on [001]

1.7 Mohs Hardness

6.56-6.5

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

Ca₂Al₂Si₃O₁₂(OH)

Kornerupine and Prehnite Chemical Formula

While comparing Kornerupine and Prehnite 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 Prehnite 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 Prehnite- Ca₂Al₂Si₃O₁₂(OH)

Compare Green Gemstones

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Kornerupine and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.