A 2ct diamond in round and oval look great. However, a 2ct cushion cut looks significantly smaller than a 2ct round or ovalAre you able to try the two different stones/carat weight in person? Maybe that way you can decide which size suits your hand and makes your heart sing. And then you can decide on natural vs man made. Good luck!

This isn't a 2ct diamond, but notice how one looks larger than the other? Hint: they're both the same size!