Willemite and Labradorite Physical Properties

Willemite

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

3.89-4.182.69-2.72

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

{0001}, {11 2 0} imperfect

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

1.7 Mohs Hardness

5.56-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)_1-2Si_3-2O₈

Willemite and Labradorite Chemical Formula

While comparing Willemite 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 Willemite and Labradorite chemical formula.

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

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Willemite and Labradorite Specific Gravity

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