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Brookite
Brookite

Dioptase
Dioptase



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Brookite
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Dioptase

Brookite and Dioptase Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

3.87-4.143.25-3.35
1 7.18
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Fracture

Subconchoidal, Conchoidal
Conchoidal, ConchoidalWalter Schumann

Cleavage

Poor on {120}, in traces on {001}
Perfect in three directions

Mohs Hardness

5.5-65
2 10
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Chemical Composition

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

Brookite and Dioptase Chemical Formula

While comparing Brookite and Dioptase 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 Dioptase chemical formula.

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

Brookite and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.