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Brookite
Brookite

Pearl
Pearl



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Brookite
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Pearl

Brookite and Pearl Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.87-4.142.60-2.85
1 7.18
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Fracture

Subconchoidal, Conchoidal
-

Cleavage

Poor on {120}, in traces on {001}
none

Mohs Hardness

5.5-62.5-4.5
2 10
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Chemical Composition

TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaCO3

Brookite and Pearl Chemical Formula

While comparing Brookite and Pearl 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 Brookite and Pearl chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Pearl- CaCO3

Brookite and Pearl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Pearl Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.60-2.85 whereas that of Pearl is 2.60-2.85.