Certified diamonds are those that were examined by a team of gemologists in a laboratory, who create a report where a diamond is measured, inspected and evaluated. The quality of a diamond is tested using skilled and trained vision, magnifying glasses and microscopes, as well as other tools used in the jewelry industry, followed by the creation of a detailed report of all the characteristics of the diamond.

To obtain a full certificate, diamond dimensions, symmetry, polish, cut, color, among other characteristics, must be examined and analyzed.

These are some of the most recognized and respected laboratories in the diamond industry, responsible for certifying a diamond:

  • Gemological Institute of America (GIA)

  • European Gemological Laboratory (EGL)

  • American Gem Society (AGS)

  • International Gemological Institute (IGI)

  • HRD by Antwerp World Diamond Center.

  • The Certified Gemology Laboratory of Europe (CGL)

The most valued diamonds in the industry are those that are accompanied by a graduation report from one of these famous laboratories, which are famous for their graduation system, consistency and coherence.

Dídiamant Recommendation

It is important to understand that not all laboratories are equally demanding about the graduation of a diamond. Example: A G-color diamond with a GIA certificate is not the same as a G-color diamond from an "X" laboratory. The G diamond X lab could be an H, I, J, or even K compared to the GIA. The GIA laboratory is the most demanding laboratory of all and there are many laboratories that are not that demanding, which determines the precision of color, cut, carat and clarity of a diamond.

It is advisable to buy a diamond with a recognized and respected certification, because this will give us certainty of what you are buying. This means that the diamond has certain characteristics, it is natural, it has not had any treatments, among other important factors.

About 70% of recognized laboratory certified diamonds have a serial number stamped on the diamond belt. This serial number is important to identify your diamond in case you do not have your certificate or if you want to know for sure if the diamond you were given corresponds to the certificate that accompanies it. This allows us to assure the buyer that they will never change the stone.