Diamond Certification

Diamond certification is essential when you’re buying a diamond. Although many diamonds look the same, not all of them are going to be of the quality you might like.

Diamond certification is the written proof of a diamond’s attributes. Without it, you have no assurance that the diamond you are buying is of the quality you’re paying for. With it, you know the precise grading for each of the 4Cs – carat weight, cut, colour and clarity – and, therefore, the diamond value.

Certification gives you the information you need to assess a diamond’s fair market value. It also allows you to make an intelligent comparison with other diamonds either in the same jewelry store or in another. Find out how much you should spend for a diamond.

Who provides diamond certification?

Diamond certificates are issued by independent gemological laboratories. There are several grading laboratories, the most prominent being: the International Gemological Institute (IGI); the Gemological Institute of America (GIA);and the European Gemological Laboratories (EGL). Certified Diamond Reports provide the following information:

  • Shape and Cut Measurements
  • Weight
  • Depth Percentage
  • Table Percentage
  • Crown Angle
  • Pavilion Angle
  • Girdle Thickness
  • Cullet Size
  • Polish
  • Symmetry
  • Clarity Grade
  • Color Grade
  • Fluorescence