Alexandrite and Sapphirine Physical Properties

Alexandrite

Sapphirine

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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

3.69-3.813.40-3.58

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

1,1 ; 3,2.

{010} Perfect

1.7 Mohs Hardness

8.57.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Sapphirine Chemical Formula

While comparing Alexandrite and Sapphirine 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 Sapphirine chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite Vs Fluorite

Alexandrite Vs Gahnospinel

Alexandrite Vs Citrine

Alexandrite and Sapphirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Sapphirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Sapphirine Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.40-3.58 whereas that of Sapphirine is 3.40-3.58.