Alexandrite and Serandite Physical Properties

Alexandrite

Serandite

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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

3.69-3.813.52

1 7.18

1.5 Fracture

Not Available

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

1,1 ; 3,2.

{100} Perfect, {001} Perfect

1.7 Mohs Hardness

8.55-5.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

Alexandrite and Serandite Chemical Formula

While comparing Alexandrite and Serandite 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 Serandite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Serandite- Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

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Alexandrite and Serandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Serandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Serandite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.52 whereas that of Serandite is 3.52.