If you're looking for a bargain, why not consider this Chan Luu Necklace. While the price is very reasonable, this item is an easy wardrobe update.
If you're gonna splurge, then what you're looking for is this Loewe Necklace. It's more expensive but worth your money. While you're at it, also have a look at this Lanvin Necklace. Yes, this item is expensive, but it does not mean it's not worth it.