Tugtupite and Alexandrite Physical Properties

Tugtupite

Alexandrite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.603.69-3.81

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

{111} Imperfect

1,1 ; 3,2.

1.7 Mohs Hardness

5.5-68.5

2 10

1.8 Chemical Composition

Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

BeAl ₂ O ₄

Tugtupite and Alexandrite Chemical Formula

While comparing Tugtupite 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 Tugtupite and Alexandrite chemical formula.

Chemical formula of Tugtupite- Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Tugtupite and Alexandrite Specific Gravity

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