Milk Opal and Crystal Opal Physical Properties

Milk Opal

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

1.98-2.501.97-2.22

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

5.5-6.55.5-6.5

2 10

1.8 Chemical Composition

Not Available

SiO 2 + H 2OUlrich Henn and Claudio C.

Milk Opal and Crystal Opal Chemical Formula

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

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

Compare White Gemstones

Milk Opal Vs Nepheline

Milk Opal Vs Natrolite

Milk Opal Vs Nosean

Milk Opal and Crystal Opal Specific Gravity

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