Forsterite and Black Opal Physical Properties

Forsterite

Black 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

3.23-3.261.97-2.22

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on {010} imperfect on {100}

Not Available

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 + H 2OUlrich Henn and Claudio C.

Forsterite and Black Opal Chemical Formula

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

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Green Gemstones

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Forsterite Vs Grossular

Forsterite and Black Opal Specific Gravity

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