Pyromorphite and Moldavite Physical Properties

Pyromorphite

Moldavite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.12.32-2.38

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Imperfect- [10 1 1]

Not Available

1.7 Mohs Hardness

3.5-45.5

2 10

1.8 Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Pyromorphite and Moldavite Chemical Formula

While comparing Pyromorphite and Moldavite 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 Moldavite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

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Pyromorphite and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.