4.5 Carat Emerald Ring w/ Diamonds in Platinum.  This modern ring features a stunning 4.52 carat emerald accented by two .40 carat diamond baguettes and set in platinum. The emerald has an ethereal glow, which is hard to convey with pictures and video. There is plenty of open space on the sides and bottom for light to feed these gorgeous stones, and the result is a wonderful ring you will cherish forever.