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Charoite
Charoite

Boulder Opal
Boulder Opal



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Charoite
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Boulder Opal

Charoite and Boulder Opal Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.54-2.781.98-2.25
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal

Cleavage

Good in three directions
None

Mohs Hardness

5-65-6.5
2 10
👆🏻

Chemical Composition

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 + H 2OUlrich Henn and Claudio C.

Charoite and Boulder Opal Chemical Formula

While comparing Charoite and Boulder Opal 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 Boulder Opal chemical formula.

  • Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Charoite and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charoite and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Charoite is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.