Browse our sparkling selection of 3 Carat loose diamonds and build a gorgeous custom wedding ring today. After choosing your stone, pair it with the metal and setting of your choice, from antique-inspired diamond halos to timeless solitaire engagement rings. All of our products come with their own certification reports from the GIA or AGSL, the most reputable diamond grading agencies. For expert advice on your purchase, consult our non-commissioned virtual gemologist service or our outstanding customer service team. When the selection process is complete, you can preview your diamond or custom jewelry for free at any of our authorized local jewelers.