Alexandrite and Hodgkinsonite Physical Properties

Alexandrite

Hodgkinsonite

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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

3.69-3.814.06-4.08

1 7.18

1.5 Fracture

Not Available

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

1,1 ; 3,2.

{???} Perfect

1.7 Mohs Hardness

8.54.5-5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Hodgkinsonite Chemical Formula

While comparing Alexandrite and Hodgkinsonite 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 Hodgkinsonite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Hodgkinsonite- Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite and Hodgkinsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Hodgkinsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Hodgkinsonite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 4.06-4.08 whereas that of Hodgkinsonite is 4.06-4.08.