How to make lab grown diamonds?

Lab-grown diamonds are created using two primary methods: High-Pressure High-Temperature (HPHT) and Chemical Vapor Deposition (CVD). Both methods replicate the […]

Lab-grown diamonds are created using two primary methods: High-Pressure High-Temperature (HPHT) and Chemical Vapor Deposition (CVD). Both methods replicate the conditions found deep within the Earth’s mantle, where natural diamonds form.

In the HPHT process, a small diamond seed is placed in a specially designed press. The growth chamber is heated to temperatures between 1300-1600°C and subjected to pressures above 870,000 pounds per square inch. A molten metal dissolves a high purity carbon source, and carbon atoms precipitate on the diamond seed crystal, gradually growing a synthetic diamond.

The CVD process involves placing a diamond seed in a vacuum chamber filled with carbon-rich gases. The chamber is heated to a lower temperature compared to HPHT, and the gases are ionized into plasma. The ionization breaks down the molecular bonds in the gases, and pure carbon adheres to the diamond seed, slowly building up a lab-grown diamond.

Both HPHT and CVD diamonds have the same chemical, physical, and optical properties as natural diamonds. They are real diamonds, just created in a lab setting. If you’re interested in more detailed information or considering purchasing a lab-grown diamond, it’s important to look for proper gem certification to ensure quality and authenticity.