A laser inscription is good for identification purposes-when you bring your stone in for cleaning, you can look at the laser inscription before leaving with your diamond to be sure it is your diamond you got back. It can also be good to have a brand name on your diamond for resale purposes as brand name diamonds often cost more and "should" offer some assurance about the quality of the cut. I would say this depends on the brand.A personal inscription like "To JB from TC" would probably be a problem in terms of resale.On the other hand, a laser inscription can be polished off pretty easily (if a diamond is stolen or some other scenario), and any store that buys a laser engraving machine can put any inscription they want on any diamond.Most jewelers can be trusted not to engage in stone-switching but it can happen and does.It is good to know what the inclusions in your diamond look like-you can always make sure that the jeweler shows you what yours look like under a microscope and that they match your lab grading report before you leave your diamond and then again afterwards.My diamond is inscribed with the brand name and certificate number and I'm glad.Hope that helps,lawmax