1, the difference between synthetic diamonds and diamonds lies in the different solvents.
Natural diamonds grow in silicate solution, so the solubility of carbon is very low. But synthetic diamonds are different. Its carbon solubility is much higher than that of silicate.
2. The difference between synthetic diamond and diamond lies in the different temperature.
The growth temperature of natural diamond is about 1000- 1300℃, and that of synthetic diamond is above 1400℃.
3. The difference between synthetic diamond and diamond.
The supersaturation of synthetic diamond is greater than that of natural diamond, so it can be predicted that the surface of synthetic diamond is rough anyway, but the actually observed synthetic diamond presents a smoother interface.
Extended data
Bernat brothers discovered the Kimberly diamond mine at 1870. It is this discovery that makes people know what kind of rocks may contain diamonds.
It turned out to be a volcanic rock formed after magma cooled in ancient times. Then, the researchers found that in addition to diamonds, this volcanic rock also contains two minerals called garnet and olivine. Therefore, in those places where garnet and olivine are produced, it is relatively possible to find diamond mines. Therefore, garnet and olivine have become "indicator minerals" for finding diamonds.
The method of finding diamond mines according to indicator minerals was not suddenly discovered one day. In 1970s, John Gianni, a geochemist of Smithsonian Institution, published his research results after carefully studying the relationship between garnet and diamond. However, before that, that is, in the 1950s, geologists of De Beers Company had been searching for diamond mines all over the world according to indicator minerals.
Diamond mines have been discovered all over the world. Among them, Australia, Congo, Russia, Botswana and South Africa are five famous diamond producing areas.
Dr Steven Hagarty, a geophysicist at the University of Massachusetts in the United States, studied the age of 1999 lava containing diamonds around the world and found that these lava containing diamonds were formed by magma ejected from various places in at least seven different periods in the past. The oldest lava was formed about 10 billion years ago.
In these seven magmatic eruptions, Africa and Brazil ejected the most diamonds from 654.38+0.2 billion years ago to 80 million years ago. It was the Mesozoic Cretaceous in the heyday of the dinosaur era. Lava containing diamonds was formed by magma ejected 22 million years ago at the latest. As for whether the lava formed later contains diamonds, it is still uncertain.