This holiday season, unions are again calling on one of the world’s largest jewellery retailers to clean up its supplier of diamonds. They are urging Signet to demand that multinational mining and metals giant Rio Tinto respect workers’ rights, indigenous peoples and the environment.

With global sales of US$6 billion annually, Signet’s Kay, Jared and Zales are found across the US, Peoples and Mappins stores are throughout Canada, and H. Samuel and Ernest Jones shops are visible on UK high streets.

The unions are calling on Signet to abide by its own Responsible Sourcing Policy. This policy declares the company “committed to the responsible sourcing of our products and the respect of human rights, and we expect the same from our suppliers around the world.”

Read more about the campaign here.