Alexandrite and Danburite Physical Properties

Alexandrite

Danburite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.812.97-3.03

1 7.18

1.5 Fracture

Not Available

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

1,1 ; 3,2.

{001} Poor

1.7 Mohs Hardness

8.57

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Danburite Chemical Formula

While comparing Alexandrite and Danburite 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 Danburite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite and Danburite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.