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Brucite
Brucite

Boulder Opal
Boulder Opal



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Brucite
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Boulder Opal

Brucite and Boulder Opal Physical Properties

Physical Properties

Tenacity

Sectile
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.391.98-2.25
1 7.18
👆🏻

Fracture

Irregular
Conchoidal

Cleavage

Perfect on {0001}
None

Mohs Hardness

2.55-6.5
2 10
👆🏻

Chemical Composition

Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
SiO 2 + H 2OUlrich Henn and Claudio C.

Brucite and Boulder Opal Chemical Formula

While comparing Brucite 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 Brucite and Boulder Opal chemical formula.

  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Brucite and Boulder Opal Specific Gravity

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