There’s brilliant and then there’s BRILLIANT! A 2 1/2 carat diamond ring is ready for the spotlight. Because a large diamond is a significant investment, it’s important to find the best quality and value. At Rockher, we created ROSI, a digital gemologist powered by the artificial intelligence of IBM’s Watson to recommend the best balance of quality and value of all the 2 and a half carat diamonds on the market today. Then we create a 2 1/2 carat diamond ring ring to showcase the beauty of your diamond in recycled gold or platinum. We make every engagement ring sell from scratch in Los Angeles so we can craft every detail with the kind of heirloom quality that lasts for generations.