Crocoite and Sapphire Physical Properties

Crocoite

Sapphire

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

5.90-6.103.95-4.03

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

{110} Distinct, {001} Indistinct, {100} Indistinct

None, but may exhibit parting

1.7 Mohs Hardness

2.5-39

2 10

1.8 Chemical Composition

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Al ₂ O ₃

Crocoite and Sapphire Chemical Formula

While comparing Crocoite and Sapphire 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 Crocoite and Sapphire chemical formula.

Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sapphire- Al ₂ O ₃

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Crocoite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crocoite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crocoite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Crocoite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.