Emerald and Riebeckite Physical Properties

Emerald

Riebeckite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Hard

Specific Gravity

2.67-2.783.28-3.44

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Uneven, Splintery

Cleavage

Imperfect on the [0001]

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Mohs Hardness

7.5-85.0-6.0

2 10

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Chemical Composition

Be₃Al₂SiO₆

Na2Fe2+3Fe3+2Si8O22(OH)2

Emerald and Riebeckite Chemical Formula

While comparing Emerald and Riebeckite 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 Riebeckite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2

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Emerald Vs Rhodizite

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Emerald and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.