If you're looking for something in between pricewise, take a look at this Bloomingdale's Pendant. While the price is very reasonable, this piece is an easy wardrobe update.
If you're looking at it like an investment piece, we recommend looking at this John Hardy Pendant - a great luxury choice. While you're at it, also have a look at this Bloomingdale's Pendant. Yes, this item is expensive, but it does not mean it's not worth it.