Labradorite and Augelite Physical Properties

Labradorite

Augelite

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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

2.69-2.722.70-2.75

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

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

1.6 Cleavage

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

From the Greek for luster, for its pearly luster on the cleavage.

1.7 Mohs Hardness

6-6.54.5-5

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Labradorite and Augelite Chemical Formula

While comparing Labradorite and Augelite 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 Labradorite and Augelite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Labradorite and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Augelite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.70-2.75 whereas that of Augelite is 2.70-2.75.