Amethyst and Charoite Physical Properties

Amethyst

Charoite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.54-2.78

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indiscernible

Good in three directions

1.7 Mohs Hardness

75-6

2 10

1.8 Chemical Composition

SiO₂

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Charoite Chemical Formula

While comparing Amethyst and Charoite 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 Charoite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Charoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Charoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Charoite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.54-2.78 whereas that of Charoite is 2.54-2.78.