if you're in a thrifty mood, this Argentovivo Pendant will fit the bill. It's a fail-safe choice, while not very pricey. Another strong contender for your wardrobe is this Pendant. While the price of this item is not too high, it will certainly attract a lot of attention. You might also want to consider this Madewell Pendant. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're a bargain hunter, opt for this Bony Levy Pendant. While the price is very reasonable, this piece is an easy wardrobe update. It is also worth looking at this Ippolita Pendant. It's an attractive option both price and quality-wise. And do check out this John Hardy Pendant! It's a very popular item and good value for money.