Alexandrite and Franklinite Physical Properties

Alexandrite

Franklinite

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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

3.69-3.815.05-5.22

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

8.55.5-6

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Alexandrite and Franklinite Chemical Formula

While comparing Alexandrite and Franklinite 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 Franklinite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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Alexandrite Vs Citrine

Alexandrite and Franklinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.