Money appeared before governments capable of regulating this system. And the first money was the objects of the greatest value. Gold has been the most popular type of money for a long time. It is beautiful, durable, easily divisible and therefore its value was converted into a measure of the value of all other things. In the real world gems cannot become money. Gemstones are not easily divisible and gemstones themselves vary greatly in characteristics.
But in the metaverse gemstones can become the new gold in order to become the basis for creating a new cryptocurrency.