Sunstone and Andalusite Physical Properties

Sunstone

Andalusite

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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

2.62-2.653.05-3.21

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

001

Good on {110}, poor on {100}

1.7 Mohs Hardness

67.5

2 10

1.8 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Sunstone and Andalusite Chemical Formula

While comparing Sunstone and Andalusite 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 Andalusite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Sunstone and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.