Boulder Opal and Childrenite Physical Properties

Boulder Opal

Childrenite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.253.06-3.25

1 7.18

1.5 Fracture

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

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

Not Available

Poor/indistinct on {100}

1.7 Mohs Hardness

5-6.54.5-5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Boulder Opal and Childrenite Chemical Formula

While comparing Boulder Opal and Childrenite 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 Childrenite chemical formula.

Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome-Chalcedony

Boulder Opal Vs Chrome Tourmaline

Boulder Opal and Childrenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.