These sure do look like Renoir earrings! There are no marks on these unusual ear-pets but they are well-made with good springy clips and ultra iridescent beetles (sometimes they are just pretty green). They measure 1 & 1/2 by 3/4 inches and are in very fine condition. One word about some dark verdigris: I can't tell if it is an intentional applied patina because it looks really good with the bugs nd is not "loose". If it bothers you, just daub it with vinegar on a q-tip, but keep in mind that vinegar will also brighten the copper, so stay on tha patina. I'd leave them exactly as they are :) but then, I'm buggy.