Phenakite and Labradorite Physical Properties

Phenakite

Labradorite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.982.69-2.72

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Uneven, Conchoidal

Cleavage

Distinct on {11 2 0}, imperfect on {10 1 1}

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

Mohs Hardness

7.5-86-6.5

2 10

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Chemical Composition

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(Na,Ca)_1-2Si_3-2O₈

Phenakite and Labradorite Chemical Formula

While comparing Phenakite 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 Phenakite and Labradorite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

Compare Colorless Gems

Phenakite Vs Orthoclase

Phenakite Vs Oligoclase

Phenakite Vs Muscovite

Phenakite and Labradorite Specific Gravity

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