Azure malachite and Achroite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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2.90-3.40
  
Fracture
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Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
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Mohs Hardness
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7-7.5
  
Chemical Composition
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Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  
Azure malachite and Achroite Chemical Formula
While comparing Azure malachite and Achroite 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 Azure malachite and Achroite chemical formula.
>- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Azure malachite and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Azure malachite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Azure malachite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Azure malachite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.