If you're budget-restricted, your best bet is this Etro Necklace. It's a popular piece, while not very costly. You might also want to check out this Kenneth Jay Lane Necklace. It's a product you're bound to love which also won't break the bank. You may also want to look at this Dannijo Choker. This item is not expensive either, but it will make a difference in your wardrobe.
If you're not the one to skimp on clothes, then what you're looking for is this Lanvin Necklace. It's more expensive but worth your money. While you're at it, also have a look at this Erickson Beamon 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 Choker Necklace. 'Cause you deserve nothing but all the finer things!