Chrysoberyl and Common Opal Physical Properties

Chrysoberyl

Common Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.811.98-2.50

1 7.18

1.5 Fracture

Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

8.55.5-6.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Chrysoberyl and Common Opal Chemical Formula

While comparing Chrysoberyl and Common Opal 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 Common Opal chemical formula.

Chemical formula of Chrysoberyl- BeAl ₂ O ₄
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Chrysoberyl Vs Common Opal

Chrysoberyl and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.