If you're looking for a thrifty option, this Monica Vinader Pendant will fit the bill. It's a great choice, while not very pricey. Another strong contender for your wardrobe is this Melinda Maria Pendant. While the price of this piece is rather reasonable, it will definitely attract a lot of attention. You might also want to consider this Anna Beck Pendant. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for something in between pricewise, we've got your back with this John Hardy Pendant. This item is bound to become a total wardrobe staple. It's also worth considering this Bony Levy Pendant. This piece is extremely popular and, just as importantly, not very expensive. Alternatively, opting for this Lagos Pendant is a good choice as well!