49 years ago today, on June 30, 1976 (June 4, 1976 lunar calendar), our country's production equipment test-pressed artificial diamonds. Artificial Diamonds On June 30, 1976, China's first 5,000-ton single-pressure source hexahedron ultra-high temperature complete set of equipment was designed and manufactured by itself, and artificial diamonds were test-pressed. Successful trial production of artificial diamonds in our country. With the strong support and assistance of many scientific research institutions and factories across the country, the relevant research units and factories of the First Ministry of Machinery have been self-reliant and successfully trial-produced artificial diamonds, and put into production. Artificial diamonds are new products developed internationally in recent years, and the production of such products requires high technical preparation. Its performance is the same as that of natural diamonds, and it is an indispensable thing for the development of modern industry. Only a few countries in the world can produce this artificial diamond.