Brookite and Carnelian Physical Properties

Brookite

Carnelian

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.87-4.142.58-2.64

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven, Splintery, Conchoidal

Cleavage

Poor on {120}, in traces on {001}

Absent

Mohs Hardness

5.5-66.5-7

2 10

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Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO₂

Brookite and Carnelian Chemical Formula

While comparing Brookite and Carnelian 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 Carnelian chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Carnelian- SiO₂

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Brookite and Carnelian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Carnelian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Carnelian Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.58-2.64 whereas that of Carnelian is 2.58-2.64.