I think nothing with will be best looking, refined can bring out the wedding, but the marriage sometimes feel that things seem to be a little festivity, it kind of small necklace with platinum fine practicing dripping like or fall haircut, do not grab limelight for a wedding, or to the sword easy road, with a slight exaggeration fashion necklace design sense all be ok, I think this kind of "The Pearl Necklace Earrings Set" on Mubuy is good, match well with necklace and earring. It is stylish and elegant, retro classic luxury nobility.
Hmmm this is a really tough decisions. I suggest finding a shirt that has the same style on top as your dress, then go to a jewelry store and experiment a little. I think a simple necklace that is not dangly or low would look nice. Or maybe even forget the necklace all together and wear really nice earings and bracelets. Good luck and congrats on the wedding!