GEMOLOGICAL TEST CERTIFICATE
  REPORT NO : JBNGTL/11825/18  
  Colour:     White 
  Weight:     4.27cts 
  Shape Cut:     Oval Cabochon 
  Transparency:     Opeque 
  Optic Character:     SR 
  RI:     1.45 
  Hardness:     6 
  Characteristics:      
  Observation:     Natural Opal 
  Remarks:     Size:- 18.72x11.90x3.15mm