my biggest concern is the setting fitting the stone not style. I have the stone (princess cut) and am going for a simple elegant look. Do i need a custom setting. What are the disadvantages of an off the shelf mounting and what are the advantages of a custom setting. Finding the diamond was easy compared to this. i realy can''t find a lot of in depth information on this topic and lord knows i''ve looked Also will vendors sell a setting only ? Some seem cool to the idea