Thulite and Verdelite Physical Properties

Thulite

Verdelite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.1

Uneven, Conchoidal

Perfect {010} imperfect {100}

6-7

Ca₂Al₃(SiO₄)₃(OH)

2.90-3.40

Conchoidal

Indiscernible

7-7.5

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Thulite and Verdelite Chemical Formula

While comparing Thulite and Verdelite 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 Thulite and Verdelite chemical formula.

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Thulite and Verdelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite Vs Verdelite during the identification of gemstone. Specific gravity of Thulite is whereas that of Verdelite is .