Milky quartz and Andalusite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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3.05-3.21
  
Fracture
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Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
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Good on {110}, poor on {100}
  
Mohs Hardness
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7.5
  
Chemical Composition
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Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Milky quartz and Andalusite Chemical Formula
While comparing Milky quartz 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 Milky quartz and Andalusite chemical formula.
>- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Milky quartz and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Milky quartz and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Milky quartz and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Milky quartz is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.