If you are on a tight budget, we recommend looking at this Bar III Necklace. It's a great item for a reasonable price. Another strong contender for your wardrobe is this Blu Bijoux Necklace. While the price of this product is rather reasonable, it will definitely attract a lot of attention. You might also want to consider this Necklace. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking to purchase a designer item, then you won't be disappointed if you check out this David Yurman Necklace. It's a costly but smart option. While you're at it, also have a look at this Ippolita Necklace. Yes, this item is expensive, but it does not mean it's not worth it.