Agate and Crystal Opal Physical Properties

Agate

Crystal Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.64

1.97-2.22

1.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indiscernible

Not Available

1.7 Mohs Hardness

6.5-7

5.5-6.5

1.8 Chemical Composition

SiO₂

SiO 2 + H 2OUlrich Henn and Claudio C.

Agate and Crystal Opal Chemical Formula

While comparing Agate and Crystal 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 Agate and Crystal Opal chemical formula.

Chemical formula of Agate- SiO₂
Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Agate and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agate and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Agate is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.