Alexandrite and Quartz Physical Properties

Alexandrite

Quartz

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.81

2.65

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Brittle, Gems

1.6 Cleavage

1,1 ; 3,2.

{0110} Indistinct

1.7 Mohs Hardness

8.5

1.8 Chemical Composition

BeAl ₂ O ₄

SiO₂

Alexandrite and Quartz Chemical Formula

While comparing Alexandrite and Quartz 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 Quartz chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Quartz- SiO₂

Compare Gems for Scorpio

Alexandrite Vs Fluorite

Alexandrite Vs Citrine

Alexandrite Vs Gahnospinel

Alexandrite and Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Quartz Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.65 whereas that of Quartz is 2.65.