in 1939, the soviet scientist ovsey leypunsky, in the process of long-term laboratory work, deduced the main conditions for creating artificial diamonds, pressure no less than 60,000 atmospheres and temperature 1.2 27° celsius. and one more important point: the process must take place in molten metal. two decades later, in the ussr, usa and sweden , scientists identified two main technologies that are still used today. the german scientist espig succeeded in synthesizing another artificial stone, emerald, for the first time in 1935. although research on this topic has been conducted since the second half of the century. nineteenth. the birthplace of the first cultured pearls is china. and they kept his secret creations, the chinese have been for a very long time. in 1890 , the technology became known to the japanese. it's called cultivation and it takes a lot of time. a grain of mother -of-pearl is manually placed into a piece of adipose tissue of one mollusk, and then into the mantle of another. belarus has its own school for growing diamonds, and they are created by scientists at the