Nacre and Anthophyllite Physical Properties
Tenacity
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Solubility
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Durability
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Specific Gravity
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2.9-3.5
  
Fracture
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Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle
  
Cleavage
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{110} Perfect, {???} Distinct, {???} Distinct
  
Mohs Hardness
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5.5-6
  
Chemical Composition
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(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Nacre and Anthophyllite Chemical Formula
While comparing Nacre and Anthophyllite 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 Nacre and Anthophyllite chemical formula.
>- Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Nacre and Anthophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nacre and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nacre and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Nacre is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.