Amethyst and Crocoite Physical Properties

Amethyst

Crocoite

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Physical Properties

Tenacity

Solubility

insoluble in common solvents

Durability

Specific Gravity

2.655.90-6.10

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Conchoidal

Cleavage

Indiscernible

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

Mohs Hardness

72.5-3

2 10

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Chemical Composition

SiO₂

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

Amethyst and Crocoite Chemical Formula

While comparing Amethyst 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 Amethyst and Crocoite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Crocoite- PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst Vs Dravite

Amethyst Vs Garnet

Amethyst and Crocoite Specific Gravity

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