Charoite and Chalcedony Physical Properties

Charoite

Chalcedony

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.54-2.78

2.55-2.70

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

Good in three directions

Absent

1.7 Mohs Hardness

5-6

6.5-7

1.8 Chemical Composition

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

SiO₂

Charoite and Chalcedony Chemical Formula

While comparing Charoite and Chalcedony 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 Charoite and Chalcedony chemical formula.

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

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Charoite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charoite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Charoite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.