Saks Fifth Avenue is suing a customer, over thousands of dollars worth of mis-priced jewelry.

Emily Pickering is being sued by the retail store after two clerks sold her diamond earrings and a diamond broach as a set for $28,000.

Turns out, the earrings and the broach weren't a set -- and should have been sold for $76,000.

The store's General Manager called Pickering, told her of the mistake, and asked her to either return the jewelry or pay up at a discounted price.

Court documents show Pickering refused.

Now Saks is suing her for the price of the broach and its lawyers' fees.