Emerald and Poudretteite Physical Properties

Emerald

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.782.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

Imperfect on the [0001]

None

1.7 Mohs Hardness

7.5-85

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Emerald and Poudretteite Chemical Formula

While comparing Emerald and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Emerald and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.