Shop our selection of Round Cut, Vvs2 diamonds to build a one-of-a-kind engagement ring. Each of our diamonds comes with its own GIA or AGSL certification report, so you can discover the details behind your stone's 4C grades. Once you've chosen the loose stone that's perfect for you, you can continue building your diamond engagement ring with one of our ring settings in a variety of metal types, including platinum and rose gold. If you run into any issues along the way, our customer service team – including expert, non-commissioned gemologists – is ready to help with any and all issues. With Ritani's free in-store preview program, you can view your diamond or unique engagement ring obligation-free at any of our authorized local jewelers in the US.