- Sep 19, 2018
You’re going to have to wait until you get it to measure the stone. My LB one carat was 6.34mm, but others have been smaller, or a little larger. If you get a setting that fits a 6-6.5 mm round, you should be fine.Does anyone know if the Lightbox diamond is a typical 1 ct. size? I keep getting asked by jewelers if it is.