If you have unwanted gold, silver, or jewelry lying around your house, you can sell it to a recycler who will give you cash for your items — and you can feel good about doing it. Gold and diamond ...

TANAKA Precious Metals is one of only five companies in the world to be appointed as a Good Delivery Referee by the London Bullion Market Association, the registration and accreditation organization ...

Chalmers University researchers develop a sustainable method for gold recycling using biodiesel. The method effectively extracts pure gold from mixed metals and is applicable to other socially ...

Researchers have developed an environmentally friendly method for recycling and purifying metals. Using gold earrings from a pawnshop in Gothenburg and biodiesel from the nearest filling station, the ...

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 ...

Dozens of people crowded around an automated gold recycling machine at a Shanghai mall, hoping to melt down family heirlooms ...