Emerald and Pollucite Physical Properties

Emerald

Pollucite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.782.86-2.94

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Imperfect on the [0001]

None observed

1.7 Mohs Hardness

7.5-86.5-7

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Emerald and Pollucite Chemical Formula

While comparing Emerald and Pollucite 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 Pollucite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Emerald and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.