I am in need of some advice about purchasing a diamond. I recently went to a B/M and viewed a.91-J, S 2 and I liked the way way the diamond looked temporarily set in white gold. The price was $2400,but I like a setting that was 1500 and my budget is only $3500. I am now considering staying with the same specs but going down to K. in color. Is this a bad choice? I am wondering can a J. or K. Color with a good cut produce the same sparkle and brilliance from a H.-S1,.90? Would like to propose soon.