Rutile and Alexandrite Physical Properties

Rutile

Alexandrite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Insoluble in acids

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.20-4.303.69-3.81

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

{110} good, 100 moderate, parting on {092} and {011}

1,1 ; 3,2.

1.7 Mohs Hardness

6-6.58.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

BeAl ₂ O ₄

Rutile and Alexandrite Chemical Formula

While comparing Rutile and Alexandrite 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 Rutile and Alexandrite chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Rutile and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rutile and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Rutile is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.