If you're not planning on spending much, this Marc Jacobs Pendant will fit the bill. It's a great choice, while not very costly. Another smart option is this Marc Jacobs Pendant. While the price is rather reasonable, be sure that this piece will become an excellent addition to your wardrobe.
If you're after a bargain, look no further than this Marc Jacobs Brooch. This item won't break the bank, but definitely deserves a place in your wardrobe. It's also worth taking a look at this Marc Jacobs Necklace. This item is extremely popular and, just as importantly, not very expensive.