Sunstone and Willemite Physical Properties

Sunstone

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

2.62-2.653.89-4.18

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

001

{0001}, {11 2 0} imperfect

1.7 Mohs Hardness

65.5

2 10

1.8 Chemical Composition

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

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

Sunstone and Willemite Chemical Formula

While comparing Sunstone 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 Sunstone and Willemite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sunstone and Willemite Specific Gravity

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