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LOOSE BLUE TOPAZ                                           Hardness 8

RETURN TO TOPAZ                                                                     Online Certificate

Chemical Composition:  Al2(SiO4) (FOH)2 Aluminum fluosilicate
Crystal Structure:            Orthorombic 
Gems are generally found in pegmatites or in alluvium.
25.47 cts. Square fancy blue Topaz single
         
  x Pieces: Topaz x x Type:  Genuine
 
  Color: Light Blue   Shape: Square fancy
                 
  Weight: 25.47 Carats   Size: 16.1 x 12.5 mm.
 
  Clarity: FL   Luster: Excellent
 
  Treatment: Heated (H)   Origin: Brazil
We use a  microscopic photography    Refr. Index: 1.61 - 1.638   Hardness 8
system. The actual gemstone is smaller than the images shown.
Tone: Light blue
Stone price:   Enquire 

ref: Tpo2547  

 

 Depth: 11.1 mm.

 

 

 

 

   
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- Scale determining the purity of a stone.  -
FL NFL SI1 SI2 MI1
Flaw less Near flaw less Slightly included 1 Slightly included 2 Medium included 1
-------------------------------------------------------------------------------------------------------------------------------------------------------------------
MI2 MI3 VI1 VI2 HI
Medium included 2 Medium included 3 Very included 1 Very included 2 Highly included
 
 
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