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Pyromorphite
Pyromorphite

Crystal Opal
Crystal Opal



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Pyromorphite
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Crystal Opal

Pyromorphite and Crystal Opal Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

6.5-7.11.97-2.22
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

Imperfect- [10 1 1]
None

Mohs Hardness

3.5-45.5-6.5
2 10
👆🏻

Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
SiO 2 + H 2OUlrich Henn and Claudio C.

Pyromorphite and Crystal Opal Chemical Formula

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

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  • Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Pyromorphite and Crystal Opal Specific Gravity

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