There’s no easy answer here. The answer is complicated, as the price of each metal varies by country:
In 2014, the most expensive metal was diamond, with an estimated price of more than $10,800 per ounce. It’s the second-cheapest metal in the world behind gold.
In 2015, it took on a new significance when the United Kingdom began selling a silver lump in the shape of a diamond ring at a wholesale price of around $3,000 a troy ounce. Some other countries, including Canada, Hong Kong and Switzerland, were already selling the same metal in the shape of a diamond ring, but all were charging less: $6,000 to $8,000 for an ounce.
Gold is still by far the most expensive metal, as the price per troy ounce is around $15,000, although the silver price has dropped some 40% since the mid-2000s. China, by the way, is currently the world’s biggest consumer of gold and silver, importing a third of its total.
2. Diamonds are made from a substance called the mineral corundum, which is made up of tiny, tiny amounts of tiny, tiny crystals called chalcedony. When you look at the crystal of a diamond, you can see that the material consists of a small, tiny cluster of crystalline structures. The crystals do this, or at least appear to do so, by creating a thin, invisible lattice of atoms.
Corundum is a very rare, fragile, radioactive substance that is also very hard, which makes it an excellent candidate for carvings. In addition to being extremely hard, it does have some other interesting properties, namely the ability to generate electricity. Corundum is the second-most abundant metal on Earth, and while it’s not so expensive, it’s the fifth-highest-value metal on the list. This also made it the eighth-most valuable and least affordable metal on the list, although it wasn’t that expensive for a while, as you can see below.
The most expensive carvings by value, according to the most frequently cited price source on Carvings.com, are the carvings by the British artist Colin Brown who was featured in the 2010 movie Avatar. He sold $300 million worth of carvings and sold almost as many diamonds, at two to one, and that’s what put him at number 20. In terms of value, Brown’s car
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