As this article notes, after McClendon had to sell 94 percent of his Chesapeake shares because of those margin calls, he no longer held the equity stake that his prior employment agreement required.

FORBES: Chesapeake Energy: CEO McClendon Serves Himself First

However, under the agreement, Tiffany may reduce retail prices by 20 percent in order to achieve an overall average gross margin for Peretti objects of no greater than 50 percent.

FORBES: The Tiffany-Peretti Deal Could Be Worth $436 Million