I'm not real sure so I would hesitate to guess. I measured the Amethyst Marquis. The center one is 3/16" X a hair less than 1/8" and the smaller two are a little less than 3/16" X 1/16" wide. The two diamonds are full cut stones, not chips and are pretty small. i don't have the best in eyesight but they look to be a hair less than 1/16" round. I hope that helps. Thank you & good luck bidding.