More retailers have jumped on board the "no dirty gold" band wagon. Blood diamonds aren't the only issue it seems with the jewelry industry. For centuries there are been problems when it comes to mining of all kinds and that also include precious metals like gold.

From Top US Jewelry Retailers Get the Gold for Signing Responsibility Pledge:

Eleven retailers recently showed their support for No Dirty Gold by signing the campaign's Golden Rules, which brings the total number of US jewelry retailers who have agreed to embrace responsible mining up to 19. Seven out of ten of the top US Jewelry retailers are now represented. The new pledges are Ben Bridge Jeweler, Birks & Mayors, Boscov's, Brilliant Earth, Commemorative Brands, fred meyer and Littman Jewelers, Leber Jeweler, Michaels Jewelers, QVC, TurningPoint and Wal-Mart.

The eight pioneer pledge signers were Cartier, Fortunoff, Helzberg Diamonds, Piaget, the Signet Group, Tiffany & Co., Van Cleef & Arpels. and Zale Corp. Together these 19 companies generate nearly $12 billion in retail jewelry sales, or 22% of the total US jewelry sales.

The Golden Rules ask mining companies to meet basic social, human and environmental criteria. Some of these standards include the informed consent of mining communities, safe working conditions, and workers rights. Mining companies must also take care of the environment by not dumping mine wastes in water sources, protecting fragile ecosystems, and picking up all the costs of closing down mining operations. Importantly, the Golden Rules require mining companies to allow independent verification of meeting the criteria.

These are some big names in the industry. QVC alone sells a huge amount of jewelry, and of course, there's Wal-mart on the list as well - two major retail jewelry giants.