Black Opal and Simpsonite Physical Properties

Black Opal

Simpsonite

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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

1.97-2.22Not Available

1 7.18

1.5 Fracture

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

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Black Opal and Simpsonite Chemical Formula

While comparing Black Opal and Simpsonite 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 Black Opal and Simpsonite chemical formula.

Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.

Compare Blue Gemstones

Black Opal Vs Brucite

Black Opal Vs Boulder Opal

Black Opal Vs Caledonite

Black Opal and Simpsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Simpsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Simpsonite Optical Properties during the identification of gemstone. Specific gravity of Black Opal is Not Available whereas that of Simpsonite is Not Available.