Sardonyx and Boulder Opal Physical Properties

Sardonyx

Boulder 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

2.55-2.701.98-2.25

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6.5-75-6.5

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

SiO 2 + H 2OUlrich Henn and Claudio C.

Sardonyx and Boulder Opal Chemical Formula

While comparing Sardonyx and Boulder 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 Sardonyx and Boulder Opal chemical formula.

Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Sardonyx and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sardonyx and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sardonyx and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Sardonyx is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.