When comparing apples and oranges, the former sell for nearly double the latter, at least according to what’s available at a nearby grocery store. Yet the price per ounce – 10 cents and 5 cents, respectively – are miniscule compared to some of the world’s rarer materials.
Consider white truffles: An ounce of the prized fungus, which grows for just a couple of months of the year almost exclusively in one part of Italy and is best located by special pigs, sells for more than $140 an ounce. Seem excessive? That doesn’t even begin to compare with some even more expensive items, according to the online publication Visual Capitalist.
Saffron, a spice native to Greece and Southwest Asia and used mainly as a seasoning and coloring agent in food, goes for more than $310 an ounce.
Palladium, a rare metal used in catalytic converters, among a number of items, sells for more $500 an ounce, while gold, the monetary standby of yore, is currently fetching nearly $1,200 an ounce.
Iranian beluga caviar, taken from sturgeon found mainly in the Caspian Sea, brings nearly $1,000 an ounce.
Yet those don’t come close to some upper-end items, according to the Visual Capitalist.
Plutonium, the radioactive element used in the first atomic bomb and employed at nuclear power plants, goes for more than $110,000 an ounce.
The Visual Capitalist estimated that an ounce of high-quality diamonds, nearly 142 carats, would sell for more than $1.8 million.
Finally, californium, a man-made element used to help start up nuclear reactors, would sell for more than $750 million an ounce – if that much californium could ever be produced.
Today, californium can be made only in milligram amounts and is available from the US government for $10 per millionth of a gram, a microgram.
How big would one-millionth of gram of californium be? I don’t know, but it’s probably not something you want to trust the summer intern with.
(Top: Slightly humorous meme in place of image of Californium, which is so small and rare that no decent image of it can be found on the internet.)