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As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium , iridium and palladium by mass and iridium, gold and platinum by volume . Carbon in the form of diamond can be more expensive than rhodium.
Precious metals, particularly the noble metals, are more corrosion resistant and less chemically reactive than most elements. They are usually ductile and have a high lustre . Historically, precious metals were important as currency but they are now regarded mainly as investment and industrial raw materials .
The most valuable metal is not actually gold, but platinum. This rare metal looks like a cross between silver and white gold. Today, it’s valued at over $1,000 per ounce, but its value has more ...
List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...
In January 2021, an example graded MS-65 became the most valuable gold coin in the world — but only for a few months — when it sold for $9.36 million at the same Heritage auction that featured ...
major industrial metals (global production >~3×10 7 kg/year; labeled in red); precious metals (labeled in purple); the nine rarest "metals" – the six platinum group elements plus Au, Re, and Te (a metalloid) – in the yellow field. These are rare in the crust from being soluble in iron and thus concentrated in Earth's core.