In Ouagadougou, Burkina Faso, it is:
Back to Home Page
Holy Grails
Ten of the World’s Rarest Gemstones
Ten of the World’s Strangest Gemstones & Minerals
World’s Rarest Metals
And here’s some super-rare CHEESE

World's Rarest Things
[Part I]  Part II

Here’s a commodity quotation listing unlike any other, guaranteed. I’m applying heavy automation so that it should be easy to crunch all the math and keep everything updated on a monthly basis.

These goods fall roughly into three categories: scientific marvels, legendary comestibles and personal care items, and outsized bullion coins/platters. Aside from the merely expensive, some additional items beyond the ones that I’m able to quote but will mention are, in fact, so elusive that they have no real market and are therefore literally priceless.

The figures reflect an average of the asking prices of several parties1. They should be reasonably close for small, tabletop quantities. Obviously if you decide to stock up on heavy water in 55-gallon drums you could cut a better deal. Each graph displays the values for the same given quantity so they’ll compare on an equal footing. To approximate Euros for January 2018, multiply dollar amounts by 0.83; for Pounds Sterling, 0.74.

UraniumUranium$ 1.63 (+16.8%) 
Manni olive oilManni olive oil$ 5.93 (-2.5%) 
Shilajit (Standardized)Shilajit (Standardized)$ 9.40 (steady) 
Heavy WaterHeavy Water$ 14.38 (steady) 
Saffron (200+)Saffron (200+)$ 235.00 (+7.6%) 
100-Year Balsamic100-Year Balsamic$ 245.00 (+20.5%) 
Château Pétrus ‘82Château Pétrus ‘82$ 282.00 (+27.6%) 
USD / Troy Ounce (% Monthly Change)
As different as these seven items are from one another, I'm listing them first because they all come in at, effectively, under $400 per troy ounce.

Uranium is normally bought, sold, and stored in the form of its chalky yellow oxide — better known as yellowcake. Back during the Beaver Cleaver era they used to give bottles of the stuff away to tourists visiting the mines. The pure metal itself is by far the cheapest superheavy substance which is the main reason the military craves it for bullets and artillery shells. Unenriched uranium is mildly radioactive and despite much hue and cry pretty safe unless it’s finely divided and inhaled. Which, of course, during warfare, it is.

At around $19 per 100 ml (3.4 oz) bottle, Manni extra virgin olive oil costs 4 times as much as uranium and so far appears to be the world’s costliest. Maybe its farmers sing to the trees. Chefs use Manni very sparingly but many insist it’s worth it. Unfortunately for the more workaday product, terms like “extra virgin” have no legal meaning in the US so you’ll find just about any old crankcase sludge marketed here under that rubric (heads up, Rachael Ray).

[Late note: I see an oil called Mani (spelled with one N) being sold through It comes from Greece, as opposed to Italy for the legendary two-N version, and you’ll notice it’s also vastly cheaper. Greek and other non-Italian olive oil is held in far lower esteem than Italian and there continues to be a lot of scandal brewing over this very subject. For all I know, “Mani” may well be a perfectly good product; but as with everything, caveat emptor.]

Mt. Everest
Shilajit or shilajeet is a highly prized tar that seeps to the surface in the Himalayas during summer thaw. It’s a traditional Nepali tonic and cure-all. In 1870 British explorer Sir Martin Stanley reported that monkeys living in the higher elevations where they could find and eat shilajit aged much more slowly, Lost Horizons-like, than their brethren who did not. Shilajit contains humic acids — large, complex molecules that arise from plant decomposition. So far little or no clinical evidence supports any benefits. (It’s also worth knowing that quality control of shilajit is often nonexistent and that unacceptable levels of heavy metals like lead and mercury, plus enough iron to give some people an overdose of it, have been reported.)

Heavy water or D2O is water made of the alternate stable isotope of hydrogen called deuterium. It’s used to slow neutrons in some nuclear reactors. D2O weighs 11% more than ordinary water and has slightly higher melting and boiling points. It lies midway between ordinary water and skim milk in viscosity, so although it doesn’t taste any different it might conceivably feel a bit unusual in your mouth. Animal studies show that restricting your fluid intake to 50% D2O or more would cause no end of grief. Its chemical reactions run a bit slower so your body would have difficulty dividing cells and repairing itself and would give up the ghost before the week is out.

Crocin Molecule
Molecule of Crocin, Chief Active Ingredient in Saffron
Top-drawer saffron is actually more red than yellow. It consists exclusively of the saffron crocus’s stigmas, not the stalks supporting them which, like the brine they inject into supermarket chicken, add little more than dead weight. Technicians grade saffron by how well it absorbs a 440 nanometer wavelength of light, a deep violet-blue, resulting in a correspondingly high reflectance at the other end of the spectrum, red. The best earns an ISO color strength rating of 230 and above. The spice’s chief active ingredient is crocin, a deep red crystalline solid that’s also plentiful in gardenias. Claims circulate to the effect that crocin shows antioxidant and cancer-suppressing potential, so a number of firms are investigating gardenias as a far cheaper source.

really OLD Balsamic Vinegar
You’d probably no more relegate 100-year-old balsamic vinegar to a salad than you would pour Manni olive oil into a turkey fryer. The classical balsamic — the only one legally marketable as Aceto Balsamico Tradizionale — consists of Trebbiano and/or Lambrusco grape juices that have been gently boiled for 24-30 hours down to a syrup, filtered, injected with a starter culture, and then ritualistically fermented through a series of progressively smaller casks made of varying types of wood. Aging categories break down into twelve years (labeled red), eighteen (silver), and finally 25 to 100 or more (gold).

At the century stage the vinegar is thick, almost black, and entirely non-acidic with an intense, indescribably complex flavor. Connoisseurs dollop it gingerly onto meat or fruit or just sip it straight from shot glasses. Clans in Italy’s Emilia Romagna region have been crafting the product which now includes Il Grande Vecchio Mussini, Modena Extraveccio, and other brands for over a thousand years. (The oldest stock I’ve ever seen for sale dated back to the mid 1600s, though despite its age it was priced more in line with its century-only brethren at around $100 per fluid ounce.)

The red Bordeaux wines of Châteaux Lafleur, Le Pin, and Pétrus figure prominently on most short lists of the world’s most exalted. Château Pétrus was served at Queen Elizabeth’s wedding in 1947 and
Chateau Petrus Pomerol
became a favorite of the Kennedy White House. I’m tracking the price of 1982 Pétrus Pomerol on my graph because it was a particularly good year and because there’s enough of it around to assure a sturdy market. $282 per troy ounce approximates $6900 a bottle.

The willingness of prospective customers to part with that kind of cash for something a couple can drink inside of an hour depends entirely on how much they trust the people who have warehoused it. You can infer something by the condition of the bottle’s label and the size of the empty space inside the neck. If the latter (called “ullage”) extends down too low, the cork hasn’t been doing its job and the wine has probably gone bad. Twist tops are vastly superior in this regard, taking an average of three years to leak in each cubic centimeter of oxygen.

US Dollar Coin
Copper$ 0.05122 (+6%)
Nickel$ 0.00198 (+6.5%)
Zinc$ 0.00161 (+3.5%)
Manganese$ 0.00049 (steady)
Dollar Coin Components
Long gone are the days when circulating coinage held substantial bullion value. But what the heck. Here’s the intrinsic worth of each of the four base metals in the current recently discontinued US dollar coin. They total $0.05530, up 6% from last month. That’s not bad for a one dollar face value. The big money loser for the US mint is the nickel, whose metal content alone now comes to about $0.0423.

In 2004 the Austrian mint struck fifteen copies of a 1000-troy-ounce 24-karat gold “coin” picturing the Vienna Philharmonic Orchestra hall on one side and violins, a harp, a French horn and a bassoon on the other. Half the weight of a typical manhole cover, it measures about 15 inches (37 cm) in diameter and 5/8 inches (1.5 cm) thick. At current gold prices its bullion value would be $1,285,400.

Canada went one better in 2007 with five specimens of a 99.999% pure 3215-troy-ounce (100 kg) gold coin, representing a current bullion value of around $4.13 million. This one is 3 ⅓ times the width of the Austrian number but only twice the thickness. Since gold of that fineness is so absurdly soft and pliable, such a heavy yet skinny platter of it would be vulnerable to dents and gouges at the slightest mishandling. Late breaking news (28 March 2017): One of these has been stolen from the Bode Museum in Berlin.

Australia’s Perth mint answered that in October 2011 with a far larger and proportionately thicker (albeit more rustic-looking) specimen. This one weighs 32,537 troy ounces (1012 kg). Multiplying the value of the Canadian article above by 10.12 yields $41.8 million. Naturally it displays the Queen on one side and a kangaroo on the other. One wonders, though, how long they’ll want to keep all that gold bottled up into a single mass.

Currently the world’s largest silver coin is the medieval-styled commemorative European Taler struck by the Austrian mint in 2008. It weighs 645.59 troy ounces (20.08 kg or 44.3 pounds) which at the moment would total around $10800.

Proceed to Part II (red mercury, agarwood oil, Escorial wool, etc.) »

World’s Rarest Metals
Ten of the World’s Rarest Gemstones
Asteroid Facts
Weird Word of the Week
Text © Peter Blinn
1. For informational purposes only. Don’t hold me to it.

Back to Home Page