Pearl and Crystal Opal Physical Properties

Pearl

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

2.60-2.85

1.97-2.22

1.5 Fracture

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

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

1.6 Cleavage

none

Not Available

1.7 Mohs Hardness

2.5-4.5

5.5-6.5

1.8 Chemical Composition

Not Available

SiO 2 + H 2OUlrich Henn and Claudio C.

Pearl and Crystal Opal Chemical Formula

While comparing Pearl 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 Pearl and Crystal Opal chemical formula.

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

Compare Blue Gemstones

Pearl Vs Prase

Pearl Vs Prase Opal

Pearl Vs Precious Opal

Pearl and Crystal Opal Specific Gravity

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

Blue Gemstones

Pezzottaite

Phosphosiderite

Pleonaste

Powellite

Prase

Prase Opal