If you are on a tight budget, your best bet is this Nashelle Necklace. It's a wonderful item, while not very expensive. You might also want to consider this Kendra Scott Necklace. It's a product you'll love which also doesn't cost too much. You might also want to consider this Ettika Necklace. 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 recommend taking a look at this Freida Rothman Necklace. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth looking at this Elizabeth and James Necklace. This item is ultra popular and, just as importantly, not very expensive. And do check out this Lana Necklace! It's a very popular item and good value for money.