Emerald and Apophyllite Physical Properties

Emerald

Apophyllite

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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

2.67-2.78

2.30-2.50

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Imperfect on the [0001]

Perfect on (001)

1.7 Mohs Hardness

7.5-8

4.5-5

1.8 Chemical Composition

Be₃Al₂SiO₆

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Emerald and Apophyllite Chemical Formula

While comparing Emerald and Apophyllite 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 Apophyllite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Emerald and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.