Cushion Cut Trillion Cut Three Stone Classic Diamond Engagement Ring - 18K Yellow Gold. Captivating trillion shaped diamonds brilliantly frame the center gem in this classic three stone engagement ring. The petite band gently tapers and secures the gems within elegant claw prongs (1/8 total carat weight). Classic Diamond Engagement Ring, Cushion Cut Diamond Ring, Three Stone Diamond Ring, Three Stone Engagement Ring, Claw Prong, Three Stone Diamond, Stone Engagement Ring, Three Stone Engagement, Yellow Gold Setting