What do you know about platinum - Platinum, one of the most rare metals on the planet?
platinum (or platinum, white gold) is a rare and precious metal widely used for jewelry making, catalytic converters, conductors, pacemakers, cancer medicines and magnets.Listed the 16 most expensive materials in the world
below is a list of the 16 most expensive materials in the world, calculated according to their money / weight, sorted from lowest to highest prices. let's take a look: gold is not