If you're looking for a thrifty option, these Iosselliani Earrings will fit the bill. It's a fail-safe choice, while not very costly. Another nice option is these Versace Earrings. While the price is rather reasonable, be sure that this piece will become an excellent addition to your wardrobe.
If you're looking at it like an investment piece, then you absolutely must check out these Chanel Earrings. This piece seems expensive, but it's top quality.