Oval Diamond Halo Engagement Ring in Yellow Gold.  This engagement ring is a hybrid of an old new and features a .62 carat oval cut diamond at its center with .16 carats of round diamonds surrounding it and set in 14 karat yellow gold. The accent stones surrounding the oval in the center are spaced out to create a bright, starburst look. The basket shows plenty of open space on the sides of the diamond to bring as much light into the stone as possible.