Alexandrite and Crocoite Physical Properties

Alexandrite

Crocoite

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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

3.69-3.815.90-6.10

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

1,1 ; 3,2.

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

1.7 Mohs Hardness

8.52.5-3

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Crocoite Chemical Formula

While comparing Alexandrite and Crocoite 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 Alexandrite and Crocoite chemical formula.

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

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Alexandrite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.