Picture of Hot laser damage. purity is no longer VVS2
Picture of fake GIA laser done with Hot laser in Australia.
Laser inscription is the use of a very fine, precise laser beam to write a grading report number or customised personal message on the girdle (outside perimeter) of a diamond. The laser inscription is totally invisible to the naked eye and can only be seen with a magnifying loupe.
It does not change the colour or clarity grade of a diamond and is considered permanent as it can only be removed by a professional diamond cutter. The DCLA uses the latest cold laser technology that allows excellent control during inscription without damaging the diamond (unlike a hot laser).
Laser inscription will ensure that the diamond set in the ring is the same as the one described in the grading report. At a later stage if you decide to remake or polish your ring the inscription will ensure that your diamond has not been swapped.
Note: All the recognised laboratories use Cold Laser systems. These laboratories include GIA, HRD, IGI, AGS and DCLA.