The most expensive substances on Earth revealed
Materials that are worth the most

A century ago crude oil was the most valuable substance on the planet, but the coronavirus pandemic caused the price per barrel to plummet. The price of black gold only returned to pre-pandemic levels in February. But how have the likes of diamonds, gold, and platinum fared? And there are a host of other obscure materials you’ve probably never heard of that command a high price due to the fact they’re ultra-rare, hard to extract or valued for highly unique properties. Click or scroll through to discover the most valuable substances on Earth, using prices as of 16 June 2021.
Iranian beluga caviar: $2.66 per gram
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It might seem odd that raw fish eggs are among the most illustrious and expensive substances in the world, but gourmands will tell you there's no better taste. Iranian beluga caviar is the most costly caviar in the world at a reported price of $80 per ounce, which works out to $2.66 per gram. The beluga, the fish from which this rare caviar is produced, typically takes 10 years to begin producing eggs, and the fish is extremely rare at the moment due to overfishing.
Crème de la Mer: $6.33 per gram
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Saffron: around $6.99 per gram
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One of the most expensive garnishes in the world is the wonderfully aromatic saffron. This sultry spice is a flowering plant that is used in a variety of ways. Saffron is used as a coloring agent, for seasoning, to scent rice, and also as a natural remedy to combat everything from depression to menstrual cycles. Its subtle taste and medicinal properties make saffron one of the most sought-after substances on the planet, costing up to $2,200 per pound for premium quality saffron, or $6.99 per gram, according to wholesaler Golden Saffron.
Italian white truffles: $7.05 per gram
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Truffles of any variety are a notoriously expensive foodstuff, but the ultra-rare Italian white truffles top the charts. According to Truffle.farm’s Truffle price tracker, these truffles sell for an astonishing $211.64 per ounce, which works out at around $7.05 per gram.
To'ak chocolate: up to $9 per gram
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To'ak chocolate is the most expensive chocolate in the world and is made by a company in Ecuador, which uses barrel-aging techniques similar to those used by whisky-makers. A 50-gram bar of the best To'ak chocolate can cost as much as $450, which works out as $9 per gram. You will find a rare heirloom Nacional cacao bean, which has been DNA tested, in the center of the bar. The ultra-expensive sweet treat contains 77% pure cacao from Ecuador, which has been matured for three years.
Platinum: $37.23 per gram
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Platinum is a metal that is highly sought-after for jewelry, but it has a multitude of other uses too. Platinum can be used in scientific experiments and is also used in anti-cancer drugs. The metal is actually so rare that all of the platinum ever mined fits into an average-sized living room, making it rarer than gold. Many precious metals have lost value as a result of the coronavirus pandemic, however, as uncertain markets have caused investors to trade in investments for hard cash. As the coronavirus pandemic hit last year, platinum prices plunged by 40% between February and March 2020 according to Reuters, but a year on the price has bounced back and now sits at $37.23 per gram according to monex.com.
Gold: $59.66 per gram
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Although revered by everyone from ancient Aztec tribes to chart-topping hip-hop MCs, gold is much more than a shiny metal that exudes an image of wealth. Gold can be used in electrical conductivity or even eaten in the form of gold leaf, and it remains one of the most expensive substances on Earth. In times of crisis such as the coronavirus pandemic, analysts are quick to see what will happen to the price of the precious metal as it's seen as a safe haven investment. But while the price of gold was initially boosted last year, peaking at $66.46 on 6 August, it then started to drop off. In fact, it has lost more than 10% in value since those highs. Currently gold is priced at $59.66 per gram, according to Bullion By Post, a 7.89% increase on the price this time last year. Vaccinations against COVID-19 have helped the price of gold to rise again by allowing economic activities around the world to begin to return to normal.
Palladium: $89.22 per gram
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This silvery-white metal is one of the rarest metals in the world and is normally in high demand as it is a key component in catalytic converters, which are found in car exhausts. More than 80% of palladium is used in this way, but the metal is also used in jewelry, where it is sometimes referred to as ‘white gold’. During the pandemic palladium has been outperforming gold, and its current price is $2,775 per ounce or $89.22 per gram as of 16 June, according to monex.com. Analysts predict the price could continue to increase throughout 2021 due to supply issues; for example, Nornickel, the world's largest palladium producer, has closed mines due to water issues.
Caterpillar fungus: up to $125 per gram

The word "fungus" doesn't typically suggest something of high value, but a hybrid caterpillar fungus that lives in, and kills, caterpillars can sell for up to three times its weight in gold. This carnivorous fungus is the world's most expensive parasite, and it only appears for a couple of weeks each year in remote parts of Nepal, India, Tibet, and Bhutan. It has been a key ingredient in Tibetan and Chinese medicines for centuries, and its scarcity and the difficulty in obtaining it means that a single gram can sell for anywhere between $30 and $125. That works out at $63,000 per pound. The fungus is such a money-spinner that experts believe up to 80% of household income in the Tibetan Plateau and Himalayas comes from selling the parasite.
Iridium: $200 per gram

Iridium is a by-product of nickel and copper production and is a dense, silvery-white metal. It’s the most corrosion-resistant metal on the planet and is routinely used as a hardening agent for platinum alloys. You will find it used in pen tips, compass bearings and for making crucibles in very hot temperatures. The reason it’s so expensive at $6,000 per ounce, or $200 per gram, according to metalsdaily.com, is that it's one of the rarest elements found in the Earth's crust.
Rhodium: $767 per gram

Another rare and valuable precious metal is rhodium, which is currently the most expensive metal in the world. Similar to palladium, this silvery-white and hard corrosion-resistant metal is mainly used in the manufacturing of catalytic converters (pictured) in cars. However, rhodium has qualities that make it even more desirable to car manufacturers as the metal is better at removing nitrous oxides from vehicle fumes, and is easier to install in existing converters. The demand for rhodium by the automotive industry initially dropped as a result of the pandemic, and so did its value. But it's since bounced back and now commands a price of $23,000 per ounce, meaning that a gram of rhodium would set you back $767.
Da Hong Pao tea: $1,400 per gram
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It’s inconceivable that a cup of tea could cost hundreds of dollars, but this is not just your average cup of English Breakfast or Earl Grey. Da Hong Pao tea, sourced from Fujian Province in China, costs 25 times more than gold at an average of $1,400 per gram. Sometimes It can cost even more than that; in 2002, a collector purchased just 20 grams of Da Hong for a shocking $28,000. That’s a serious pot of cash for a pot of tea!
Coral snake venom: $4,000 per gram

Plutonium: $4,000 per gram

Taaffeite gems: $12,500 per gram

Benitoite: $21,265 per gram
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Soliris: $22,733 per gram

Tritium: $30,000 per gram
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Red Beryl: $50,000 per gram
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Serendibite: $90,000 per gram

When it comes to rare and expensive gemstones, not many can match the exquisite and unique Serendibite inosilicate mineral. Initially discovered in Sri Lanka in 1902, and more recently in Myanmar, this rare mineral can cost in the region of $18,000 per carat. With a complex chemical make-up, this much sought-after inosilicate is mainly used in ultra-expensive jewelry.
Grandidierite: $129,500 per gram

According to jewelry industry magazine National Jeweller, a grandidierite gem on display at Willensky Gallery in New York, weighing 4.96 carats (almost one gram), was priced at $129,500 in 2019. The rare gemstone was discovered in 1902 in Madagascar. Clear and facet grade Grandidierite stones are some of the hardest gems to find.
Diamonds: pure one-carat diamonds $134,750 per gram
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Painite: $300,000 per gram

Red diamonds: $5 million per gram

Californium 252: $27 million per gram

You might have heard the term ‘designer drugs’, but ‘designer chemicals’ are also a massive business. Californium 252 is a special isotope that is used to find the layers of water and oil in oil wells. This synthetic radioactive element has a half-life of 2.645 years and is produced by nuclear reactors. The chemical was first made in 1950 at Berkeley in California and can cost a jaw-dropping $27 million per gram.
Antimatter: $23.6 billion per gram
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When it comes to finding the most expensive substance known to humans, nothing else comes close to antimatter. If you thought this substance only existed in science fiction, think again. NASA scientists back in 1999 said it would cost $62 trillion to make a gram of antihydrogen, but in this day and age the price is closer to $23.6 billion per gram. It is believed that in years to come that this special substance will fuel intergalactic space travel, but for now that does remain in the realms of science fiction.
Now read about the largest gold nuggets ever found
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