Where can I get round cut diamond rings?

I can't stop thinking about my circular solitaire! It is 1.7 carats but is cut to look like a 2 carat, thus the top is larger than the depth. My fiancé really astonished me because I only expected 1.2-1.5 carats; I don't think it's too huge, though; I like the way a big round diamond looks. Overall, circular solitaires are stunning and classic. I receive a tonne of praises on it. Love the hidden halo on mine as well. The only problem I've ever had with the high setting is that occasionally a hair or two will get trapped on my hand if I run it through my hair.