Alexandrite and Ulexite Physical Properties

Alexandrite

Ulexite

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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

3.69-3.811.65-1.99

1 7.18

1.5 Fracture

Not Available

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

1.6 Cleavage

1,1 ; 3,2.

{010} Perfect, {110} Perfect

1.7 Mohs Hardness

8.52-2.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Alexandrite and Ulexite Chemical Formula

While comparing Alexandrite and Ulexite 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 Ulexite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Alexandrite and Ulexite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.