Alexandrite and Friedelite Physical Properties

Alexandrite

Friedelite

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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

3.69-3.813.06-3.19

1 7.18

1.5 Fracture

Not Available

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

1.6 Cleavage

1,1 ; 3,2.

{010} Perfect

1.7 Mohs Hardness

8.54-5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Alexandrite and Friedelite Chemical Formula

While comparing Alexandrite and Friedelite 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 Friedelite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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Alexandrite and Friedelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.