Precious metals are valuable because they can be recycled over and over again without any loss in quality. And yet, every year, 1,600 tons of gold is mined for jewelry, in a carbon-intensive process is often brutal to workers. Pandora, the Danish jeweler famous for its affordably priced charm bracelets, is putting an end to gold and silver mining in its supply chain.

This is a big move because Pandora is the world’s largest jeweler by volume, selling 103 million pieces a year. After years of working to shift its supply chain, it announced today that every single piece of jewelry it now sells is made of recycled gold and silver. This is expected to save 58,000 tons of carbon dioxide a year, on par with the annual electricity use of 11,000 homes.

It took years to change Pandora’s supply chain, says Luciano Rodembusch, Pandora’s president for North America. The effort began several years ago, when a group of more than 100 Pandora employees were tasked with sourcing recycled metals. Today, less than 20% of the world silver supply and less than 25% of the world’s gold comes from recycled sources.

This means that there wasn’t already an obvious jewelry supply chain for Pandora to tap. It had to search for recycled metal refineries around the world. Pandora was able to find these suppliers by December of 2023, and since then, it has been working to deplete its non-recycled inventory.

Rodembusch says that most of this gold comes from industrial sources, like X-ray machines .