If you are on a tight budget, this Pendant will fit the bill. It's a popular choice, while not very costly. In this price range, you can also consider these Ananda Earrings. It's also a popular item and won't break the bank. You might also want to consider this Fornash Necklace. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for a happy medium, you're in luck with this Tom Binns Pearl Necklace in stock and waiting for you. You most certainly will love this item.