1.45 Emerald Cut Diamond Open Ring in 14k Yellow Gold1. 45 Emerald Cut Diamond Open Ring in 14k Yellow Gold. This modern, open ring features 1. 45 carats of emerald cut diamonds finished in polished 14 karat yellow gold. The primary stone is a . 75 carat emerald cut diamond. Set on the opposite side of the open band, a . 70 carat emerald cut diamond decorates the end of the ring. Both of the diamonds are prong set. The primary diamond is colorless and the accent diamond cut is near colorless, both with