Lab-grown diamonds

Lab-grown diamonds grow diamond crystals by simulating natural processes to obtain physical and chemical properties similar to those of natural diamonds. Also known as synthetic diamonds or chemical vapor deposition (CVD) diamonds. This is a highly sophisticated technology.

The CVD process for growing diamonds usually involves the following steps:

1. Substrate preparation: Select a natural or artificial diamond crystal as the seed crystal, and then place it in a reaction chamber under high temperature and pressure.

2. Vapor deposition: In the reaction chamber, a mixture of gases (usually including hydrogen and methane) is dissociated and deposited on the seed crystals. The carbon atoms in these gases are adsorbed to the surface of the seed crystal, gradually forming new diamond crystal layers.

3. Control conditions: The cultivation process requires strict control of temperature, pressure and gas composition to ensure the growth quality and speed of diamond crystals.

4. Crystal growth: The diamond crystal layer grows continuously until it reaches the desired size. This process can take weeks or even months.

5. Diamond separation: After cultivation, the diamond needs to be separated from the seed crystal and cut and polished to obtain the final gem.

The benefits of lab-grown diamonds include controllable quality and properties, as well as being environmentally friendly as it reduces dependence on natural resources. This has made synthetic diamonds a sustainable and high-quality gemstone option that has become increasingly popular with more and more people.