Piemontite and Labradorite Physical Properties

Piemontite

Labradorite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.69-2.72

1 7.18

1.5 Fracture

Uneven, Splintery

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

[001] good, [100] distinct

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

1.7 Mohs Hardness

6-6.56-6.5

2 10

1.8 Chemical Composition

Not Available

(Na,Ca)_1-2Si_3-2O₈

Piemontite and Labradorite Chemical Formula

While comparing Piemontite 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 Piemontite and Labradorite chemical formula.

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

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Piemontite and Labradorite Specific Gravity

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