Erythrite and Labradorite Physical Properties

Erythrite

Labradorite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.69-2.72

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

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

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

(Na,Ca)_1-2Si_3-2O₈

Erythrite and Labradorite Chemical Formula

While comparing Erythrite 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 Erythrite and Labradorite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Erythrite and Labradorite Specific Gravity

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