Alexandrite and Girasol Physical Properties

Alexandrite

Girasol

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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

3.69-3.811.98-2.50

1 7.18

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

1,1 ; 3,2.

Not Available

1.7 Mohs Hardness

8.55.5-6.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Alexandrite and Girasol Chemical Formula

While comparing Alexandrite and Girasol 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 Girasol chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Girasol- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Alexandrite and Girasol Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Girasol Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Girasol Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 1.98-2.50 whereas that of Girasol is 1.98-2.50.