An engagement ring must not only fit the finger; it must fit the woman. It should be a reflection of who she is as well as an embodiment of her feelings toward the commitment she is about to make. Because the diamond is the symbol of everlasting love, it is, of course, the most important decision to make. But then there’s the matter of the setting. And while some settings may be more appropriate than others for specific diamond shapes, ultimately the decision comes down to personal taste.