4 Carat Emerald Cut Diamond Engagement Ring. This is a stunning diamond engagement ring crafted in platinum and mounted with a stunning GIA-certified Emerald Cut Diamond. We promise you if you are in love with Art Deco, architecture, and clean lines this is a ring for you! We also recommend this ring for someone who lives an active lifestyle, this ring is crafted in a very secure mounting and the center diamond is placed in a secure halo surround. Other facts about this ring: It is handmade feat