Prase Opal and Chrome-Chalcedony Physical Properties

Prase Opal

Chrome-Chalcedony

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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

1.98-2.252.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Not Available

1.7 Mohs Hardness

5-6.56.5-7

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Prase Opal and Chrome-Chalcedony Chemical Formula

While comparing Prase Opal and Chrome-Chalcedony 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 Prase Opal and Chrome-Chalcedony chemical formula.

Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Compare Blue Gemstones

Prase Opal Vs Sanidine

Prase Opal Vs Sard

Prase Opal Vs Sapphire

Prase Opal and Chrome-Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prase Opal and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prase Opal and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Prase Opal is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.