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What is the most rare and expensive metal on earth?
The most expensive and rare metal on earth is rhodium. It is noted for its rarity and high demand, particularly in the automotive industry for catalytic converters, as well as its use in jewelry and electrical contacts[2][4][6]. Rhodium is significantly more expensive than gold and platinum due to its scarcity and unique properties[3][6]. The annual production of rhodium is around 30 tonnes, making it much rarer than gold, which has a production rate of 2,500 to 3,000 tonnes per year[4].
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