Prase and Boulder Opal Physical Properties

Prase

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

2.64-2.691.98-2.25

1 7.18

1.5 Fracture

Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

75-6.5

2 10

1.8 Chemical Composition

SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 + H 2OUlrich Henn and Claudio C.

Prase and Boulder Opal Chemical Formula

While comparing Prase 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 Prase and Boulder Opal chemical formula.

Chemical formula of Prase- SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

Prase Vs Sapphire

Prase Vs Sanidine

Prase Vs Rubellite

Prase and Boulder Opal Specific Gravity

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