Sapphire and Fire Opal Physical Properties

Sapphire

Fire Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.031.97-2.22

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

None, but may exhibit parting

Not Available

1.7 Mohs Hardness

96-6.5

2 10

1.13 Chemical Composition

Al ₂ O ₃

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

Sapphire and Fire Opal Chemical Formula

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

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Sapphire and Fire Opal Specific Gravity

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