Shop our certified Asscher Cut, K Color loose diamonds to design your own extraordinary engagement ring. Continue creating your custom engagement ring with one of our gleaming metal options or unique ring settings, from modern bezel settings to Art Deco-inspired halo engagement rings. All of our products come with their own certification reports from the GIA or AGSL, the most reputable gemstone grading agencies. Contact our free, non-commissioned virtual gemologist service or our expert customer service team if you run into any issues or questions along the way. Preview your custom wedding ring or diamond engagement ring for free at any of our authorized local jewelers.