Brazilianite and Boulder Opal Physical Properties

Brazilianite

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

2.98-2.991.98-2.25

1 7.18

1.5 Fracture

Conchoidal, Gems

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

1.6 Cleavage

(010) Distinct to good

Not Available

1.7 Mohs Hardness

5.55-6.5

2 10

1.8 Chemical Composition

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO 2 + H 2OUlrich Henn and Claudio C.

Brazilianite and Boulder Opal Chemical Formula

While comparing Brazilianite 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 Brazilianite and Boulder Opal chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Brazilianite and Boulder Opal Specific Gravity

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