Shop our selection of Cushion Cut, Internally Flawless diamonds to build a custom engagement ring. See the specific proportions behind your stone's cut grade in its GIA or AGSL certification report. Once you've chosen the loose stone that's perfect for you, you can continue building your engagement ring with one of our ring settings in a variety of metal types, including platinum and rose gold. If you desire help along the way, contact our free, non-commissioned virtual gemologist service or our skilled customer service team for expert advice. 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.