Emerald and Powellite Physical Properties

Emerald

Powellite

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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

4.23

1.5 Fracture

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

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Imperfect on the [0001]

{111} Distinct

1.7 Mohs Hardness

7.5-8

3.5-4

1.8 Chemical Composition

Be₃Al₂SiO₆

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Emerald and Powellite Chemical Formula

While comparing Emerald and Powellite 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 Powellite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Emerald and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Powellite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 4.23 whereas that of Powellite is 4.23.