Willemite and Forsterite Physical Properties

Willemite

Forsterite

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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

3.89-4.183.23-3.26

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

{0001}, {11 2 0} imperfect

Perfect on {010} imperfect on {100}

1.7 Mohs Hardness

5.56.5-7

2 10

1.8 Chemical Composition

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

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Willemite and Forsterite Chemical Formula

While comparing Willemite and Forsterite 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 Forsterite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Willemite Vs Garnet Color Change

Willemite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.