Verdelite and Labradorite Physical Properties

Verdelite

Labradorite

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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

2.90-3.40

2.69-2.72

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

Not Available

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

1.7 Mohs Hardness

7-7.5

6-6.5

1.8 Chemical Composition

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.

(Na,Ca)_1-2Si_3-2O₈

Verdelite and Labradorite Chemical Formula

While comparing Verdelite and Labradorite 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 Verdelite and Labradorite chemical formula.

Chemical formula of Verdelite- 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.
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Verdelite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdelite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdelite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Verdelite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.