I have a 1.75 K round, but I''m REALLY in love with the more square/rectangular stones . . . but I don''t know what to look for to get a very firey, sparkly diamond. Please help! I am thinking I like radiant, cushion, asscher, or jubilee cut . . . any other ideas/suggestions? Also, what size would I need to go with to not look like I got a smaller stone when I get my new stone?? (it would be in a new setting altogether) thanks for any help!!!