Gold is the costliest of all metals (PD)(CD)
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The World's Most Expensive Precious Metals
Rhodium. Rhodium is the most expensive metal in the world, and it is also extremely rare. ...
Platinum. Platinum is one of the most widely-used precious metals because of its sheer versatility. ...
Gold. We are of course a bit biased, but gold is our favourite of the bunch. ...
Ruthenium. ...
Iridium.
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