Boulder Opal and Nephrite Physical Properties

Boulder Opal

Nephrite

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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

1.98-2.252.90-3.10

1 7.18

1.5 Fracture

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

Splintery, Granular, Splintery, Granular, Gemstones (2009)

1.6 Cleavage

Not Available

1.7 Mohs Hardness

5-6.56-6.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Boulder Opal and Nephrite Chemical Formula

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

Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Compare Blue Gemstones

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Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome-Chalcedony

Boulder Opal and Nephrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.