My mother is nostalgic for a ring she and my father couldn't afford when they first got married. It was a simple 14kt yellow gold round "tiny" solitaire circa the early 70s. I'd like to help my parents recreate this ring, but with a PS-quality diamond. My mother isn't too sure of what she wants and isn't very big on jewelry, just wants the nostalgia. Any thoughts on settings, etc that would work well?