AntiqueShopper recently asked for help for a gift for her Mom on this forum. She ended up purchasing:
http://www.ross-simons.com/products/487091.html
6-8mm Cultured Keishi Pearl Necklace With 7.25 ct. t.w. Multi-Gems In 14kt Yellow Gold
Item#: 487091
A glowing necklace featuring a double strand of 6-8mm champagne cultured freshwater Keishi pearls and 7.25 ct. tot. gem wt. smoky quartz and citrines. Necklace has 14kt gold beads and clasp.
I thought it was really unique and at $100, it is a good price too. I think it would look good with your gown. I tried several times to post a picture to no avail. Sorry. Please let me know what you think.
BTW, are you a yellow gold or white gold/platinum/silver gal?