Gold or platinum is not the most expensive material in the world.
If you believe that the most expensive material in the world is gold or platinum, you are wrong. There is an element whose value reaches 150 million dollars per gram, its name is Buckminsterfullerene.
It is useless, however, to start digging on the ground to look for it, since it does not exist in nature. This material is in fact made in the laboratory and it is precisely this that makes it particularly expensive.
The potential applications of Buckminsterfullerene are enormous, including its application in the construction of miniaturized atomic clocks or even GPS systems with an accuracy margin of a few millimeters, which could revolutionize automated cars.
However, for the time being the production costs are high and new production techniques will have to be tested to reduce costs. However, it must be said that it is enough to use very small quantities, in the order of a few tens of micrograms.