Crocoite and Iolite Physical Properties

Crocoite

Iolite

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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

5.90-6.102.6-2.7

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

2.5-37-7.5

2 10

1.8 Chemical Composition

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

Mg₂Al₄Si₅O₁₈

Crocoite and Iolite Chemical Formula

While comparing Crocoite and Iolite 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 Iolite chemical formula.

Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Crocoite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crocoite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crocoite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Crocoite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.