Oval diamond rings have a quiet elegance, with the brilliance of a round and a elongated silhouette that flatters your fingers. Oval cut diamonds look bigger than almost any other diamond shape. We recommend a length-to-width ratio of 1.33 to 1.66, which gives an oval diamond plenty of sparkle. Finding the perfect one-carat oval diamond ring can be challenging in traditional jewelry stores because the selection is so limited. You are much better off finding a loose oval diamond online and creating your own oval diamond ring. Our diamond-picking artificial intelligence, ROSI, can help you find the best possible one-carat oval diamond, balancing quality and value. Then our California workshop will make your oval diamond ring from scratch just for you. We use recycled precious metal and responsibly sourced diamonds to make a one-carar oval diamond ring that’s beautiful inside and out and crafted to last.