If you're looking for an affordable item, this BaubleBar Necklace will fit the bill. It's a fail-safe choice, while not very expensive. Another strong contender for your wardrobe is this Mary Katrantzou 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 Cara Necklace. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're not the one to skimp on clothes, then what you're looking for is this Ippolita Necklace. It's more expensive but worth your money. While you're at it, also have a look at this David Yurman Necklace. Yes, this item is expensive, but it does not mean it's not worth it. And one more item you might be interested in is this Konstantino Necklace. 'Cause you deserve nothing but all the finer things!