What a kilogram of each element costs
The periodic table coloured by the price of a kilogram of each element, on a log scale: chlorine costs 8 cents, neptunium $660,000. Gold, at about $75,000, is only the fifth dearest.
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Data: Wikipedia, "Prices of chemical elements" (figures from USGS and named suppliers; CC BY-SA 4.0), read September 2026. Each price is from the year its source quotes: 61 of 85 from 2019-20, the rest 1999-2025 (gold 2024, neptunium 2003). Elements with no quoted price are grey. Played as puzzles in Shade.