Sears Holdings, Ultra Stores, and Blue Nile all signed the No Dirty Gold campaign’s Golden Rules for responsible sourcing of precious metals, a statement for the campaign said.

This brings the total number of jewelry retail signatories up to 60.

"The No Dirty Gold campaign is a great initiative that pushes for sustainability and ethnical sourcing on gold. We are proud to be a part of it and to offer our customers gold that was obtained in a responsible manner", said Michelle Pearlman, senior vice president and president of jewelry at Sears Holdings.

"The No Dirty Gold campaign applauds this important step taken by Sears, Kmart, Blue Nile and Ultra Stores," said Payal Sampat of Earthworks, which spearheads the No Dirty Gold campaign. "We look forward to working with these companies to find solutions to irresponsible gold mining practices."

JCK