4.88 Emerald Cut Aquamarine Diamond Earrings.  These modern stud earrings feature 4.88 carats of emerald cut aquamarines and .18 carats of round brilliant cut diamonds that are set in 18 karat white gold. The diamond accents sit in a cluster above the fabulously clear aquamarines. These will be a favorite for daily wear as well as special evenings when you want to dress up.