You can try seaching online on Etsy, they have so many pretty handmade accessories.
I have actually 2 sets of jewellries (a pearl set and a diamond set)but they were given as wedding gifts from my mother.
Unless you are going for Mikomoto kind of pearls, pearl necklace/accessories are not going to cost you much more than Swarovski.
My friend told me iWed Wedding World has lots of pretty bridal jewelry for rent. She went there to rent her wedding gowns and got couple sets of bridal jewelry to match her gowns from them.
Their bridal jewelry are fancy and special. It may be a better idea to rent the jewelry for one day usage rather than spending a fortune on something you won't wear again in the future.
If you want, you can go check out their studio. Maybe you will find something you like there.