Chrysoberyl and Pollucite Physical Properties

Chrysoberyl

Pollucite

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Physical Properties

Tenacity

Brittle

Solubility

Readily soluble in HF

Durability

Specific Gravity

3.69-3.812.86-2.94

1 7.18

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Fracture

Uneven, Conchoidal to uneven, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

Distinct on {110}, imperfect on {010}, poor on {001}

None observed

Mohs Hardness

8.56.5-7

2 10

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Chemical Composition

BeAl ₂ O ₄

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

Chrysoberyl and Pollucite Chemical Formula

While comparing Chrysoberyl 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 Chrysoberyl and Pollucite chemical formula.

Chemical formula of Chrysoberyl- BeAl ₂ O ₄
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Compare Green Gemstones

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Chrysoberyl Vs Demantoid

Chrysoberyl Vs Dioptase

Chrysoberyl and Pollucite Specific Gravity

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