Cushion Cut Olympia Three-Quarter Coverage Diamond Engagement Ring - 18K Yellow Gold. This classic engagement ring features sparkling diamond accents that extend three-fourths of the way around the ring. A diamond adorned gallery and graceful claw prongs embrace the center gem (5/8 total carat weight). Cushion Cut Diamond Engagement Ring, Classic Engagement Ring, Lab Diamond Engagement Ring, Classic Engagement, Cushion Cut Ring, Classic Engagement Rings, Sparkling Diamond, Yellow Gold Setting, Cushion Cut Diamonds