Fire Opal and Purpurite Physical Properties

Fire Opal

Purpurite

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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

1.97-2.223.2-3.4

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Not Available

[100] [001] perfect

1.7 Mohs Hardness

6-6.54-4.5

2 10

1.8 Chemical Composition

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Fire Opal and Purpurite Chemical Formula

While comparing Fire Opal and Purpurite 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 Fire Opal and Purpurite chemical formula.

Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Compare Red Gemstones

Fire Opal Vs Hackmanite

Fire Opal Vs Garnet

Fire Opal Vs Hexagonite

Fire Opal and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fire Opal and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fire Opal and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Fire Opal is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.