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Rhodium: Earth's Rarest and Most Expensive Precious Metal
On Christmas Eve in 1800, English scientist William Hyde Wollaston a piece of nearly pure platinum ore ... valuable precious ...
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Inside the UK’s only gold refinery 99.99% pure gold bars are made
and rhodium. Produced by Claudia Romeo. Filmed by Claudia Romeo and David Ibekwe. More from Video Baird & Co. refines 99.99% pure gold. It goes through over 10 tons of gold a year. It makes cast ...