Sard and Willemite Physical Properties

Sard

Willemite

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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

2.58-2.633.89-4.18

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

Not Available

{0001}, {11 2 0} imperfect

1.7 Mohs Hardness

6.5-75.5

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

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

Sard and Willemite Chemical Formula

While comparing Sard and Willemite 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 Sard and Willemite chemical formula.

Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sard and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sard and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sard and Willemite Optical Properties during the identification of gemstone. Specific gravity of Sard is 3.89-4.18 whereas that of Willemite is 3.89-4.18.