Diamond inscriptions show up particularly well as the diamond carbonises, creating a black inscription which is relatively easy to read. Inscriptions on colored stones need to be a bit deeper to be clearly legible. Numbers are most often placed on the girdle of the stone.Laser engraving on the girdle of the stone with the certificate number or any other identifying text to customize your diamond.

This is the best means of ensuring that your diamond corresponds to its certificate by having the identification number of your GIL certificate laser inscribed on it.The laser inscription is a microscopic marking created by a laser beam on the diamond's surface.