The invention of specialized laboratories in the seventies which use advanced tools allows for a more scientific evaluation of diamonds. This is how internationally-reknowned labs like G.I.A. (The Gemological Institute of America) and H.R.D. (Hoge Raad voor Diamant) emerged. The role of these laboratories is to analyse diamonds and establish a certificate for each one of them to indicate their characteristics: the 4 Cs: diamond weight, diamond colour, diamond purity, diamond size, as well as their dimensions, fluorescence, polish and symmetry. A GIA or HRD certificate is provided with each diamond ring that you find on the Edenly site. You canl find examples of these certificates below :