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8 Most Expensive Materials In The World

8 Most Expensive Materials In The World

Our planet is full of precious minerals, precious minerals, vegetation, animals, organic matter, synthetic matter, psychotropic plants, and rare metals. But if you believe that gold is the most precious of all, you are very mistaken. Because, although you may not be aware of it, there are many substances that are vastly more precious, valued at billions of dollars per gram!



1. Rhodium-$69.93 Per gram, Rhodium metal is glossy and silvery-white. Rhodium has a greater melting point and a lower density than platinum. It is highly reflective and hard and durable. Rhodium is used to make electrical contacts, as jewelry and in catalytic converters, but is most commonly used as an alloying agent in other materials, such as platinum and palladium. These alloys are used to make things like furnace coils, aircraft spark plug electrodes, and laboratory crucibles. One ton of earth crust contains approximately 0.001 g of rhodium.



2. Plutonium-$4,000 Per gram, Plutonium naturally occurs in uranium ores in the Earth's crust, but it is very rare. The main source of the element is the synthesis in uranium-238 reactors. In contrast to most metals, plutonium is not a good conductor of heat or electricity. It has a low melting point and an exceptionally high boiling point.



3. Painite - $9,000 per gram, This stone is so rare that very few people actually know it exists. It's a mineral of orange or reddish-brown color, and it was only discovered 65 years ago. There are just a couple hundred of these stones in the world today. In 2005, The Guinness Book of World Records called the rarest gemstone mineral in the world.



4. Taaffeite - $20,000 per gram, A precious stone of violet, pink, red, or white color. It's a million times rarer than diamonds. Taaffeite is a very rare gem variety and is often included in the world's rarest gemstone list. Only a handful of specimens were known to exist at one time. More material has recently been discovered. Taaffeite occurs in carbonate rocks, along with fluorite, mica, spinel, and tourmaline.



5. Tritium - $30,000 per gram, Tritium occurs naturally in very low concentrations in the environment. The majority of tritium in the environment is in the form of tritiated water, which is easily distributed in the atmosphere, water bodies, soil, and rock.



6. Depending on the clarity and color and overall size, diamonds are priced between $900 and $41,200 per carat. Diamonds can only be scratched by another diamond, and they are the hardest natural substance ever known. Diamonds are almost 100 percent carbon and are made up of a single element. The diamonds we see today were formed by immense heat and pressure below the surface of the earth.



7. Californium is a rare earth metal, and it does not occur on the planet naturally. It is a metallic chemical radioactive element with symbol Cf and atomic number 98. Just a gram of Californium worth USD 27 million.



8. Francium – about $1 billion per gram. It occurs naturally in uranium minerals, but the Earth's crust is likely to contain less than 1 ounce of francium at any time. Francium can be artificially produced if thorium is bombed with protons. Only a few atoms of francium have been produced commercially, so if you wanted to produce 100 grams of francium, you might expect to pay a few billion US dollars for it.

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