I am looking at getting an eternity ring for my wife. I have seen some rings at 1 ct and other at 5ct. I just came back from Jared's and the guy showed me a 2ct, a3ct and a 4ct and he said the 4 is much too big for practical use. He suggested a 2 or 3. Any ideas? And anyone have any ideas on a reputable place to buy? Thanks! John