Alexandrite and Povondraite Physical Properties

Alexandrite

Povondraite

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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

3.69-3.813.26

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

1,1 ; 3,2.

None

1.7 Mohs Hardness

8.5Not Available

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Alexandrite and Povondraite Chemical Formula

While comparing Alexandrite and Povondraite 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 Alexandrite and Povondraite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Compare Gems for Scorpio

Alexandrite Vs Citrine

Alexandrite Vs Fluorite

Alexandrite Vs Gahnospinel

Alexandrite and Povondraite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.26 whereas that of Povondraite is 3.26.