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ROUGH ANDALUSITE                   NATURAL COLOR             Hardness 7.5

 

Rough Andalusite Crystal  67.40 cts.
18.83 cts. Oval faceted Andalusite after cutting 
  x Pieces: 1 Andalusite x Type: 100% Natural
 
  Color: yellowish-brown-orange   Shape: Rough
                 
  Weight: 67.40 Carat   Size: ---
 
  Clarity: NFL   Luster: Excellent
 
  Treatment: None (N)   Origin: Madagascar
  Refr. Index: 1.629-1.648   Hardness 7.5
 
18.83 cts. faceted oval Andalusite  Depth:6.8 mm.
                                                      

 

                                                      

 

                                                      

 

                                                      
   Hardness: 7.
   Specific Gravity: 3.11 - 3.22
   Refractive Index: 1.629 - 1.638 & 1.633 - 1.645  & 1.639 - 1.648
   Chemical Composition: Al2 (O¦SiO4)
   Crystal Structure: Orthorombic
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