See bottom of post for update.
Diane von Furstenberg's Zia sandal retails for $280 at The Shoe Box.
The style of these Finnell heels from Aldo varies slightly (and they aren't available in suede) but they are still a great option for less. They are currently on sale for $59.98 (down from $90) and you can click on the photo below to purchase (also available in black).
*Update - 7/19/10* - Reader Allyson just sent me this great lookalike from Nine West, which retails for $89 and also comes in black or dark blue. Click on the photo below to purchase this fabulous alternative!