Crystal Opal and Pyrophyllite Physical Properties

Crystal Opal

Pyrophyllite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.97-2.222.65-2.90

1 7.18

1.5 Fracture

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

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Not Available

{001} Perfect

1.7 Mohs Hardness

5.5-6.5Not Available

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Crystal Opal and Pyrophyllite Chemical Formula

While comparing Crystal Opal and Pyrophyllite 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 Crystal Opal and Pyrophyllite chemical formula.

Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Yellow Gemstones

Crystal Opal Vs Dravite

Crystal Opal Vs Diaspore

Crystal Opal Vs Diopside

Crystal Opal and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.