I love that mini heart lock pendant in both golds, wow, it's beautiful! I remember your original thread when you were deciding, great choice! Like designerdiva40 said, I'd mix yg and wg but not yg and rg. The only way I'd mix yg and rg were in a tri-color manner, like a trio of yg/rg/wg worn together in three different bangles that coordinate or a tri-color ring like Cartier makes a double C 6-row tricolor that is insanely pretty. At one point yg and diamonds was not a look I liked at all but now I'm loving it. But yg at that point was just not in style and dated looking, maybe this was early 2000, late 90's, I can't remember exactly but yg wasn't really 'it' at one point. Now yg looks modern and fresh and still classic some how, that's why I think yg looks fantastic with diamonds bec. it's in again. I can't picture yg going out of fashion again like it did for a short time there, if anything I think it will find it's way back and become pretty mainstream in the near future. We might even see a return in e-ring settings in yg in the younger set. There are already rose gold e-ring settings that the very modern and stylish are wearing now ie. Blake Lively.