with the other being CVD (Chemical Vapor Deposition). HPHT is a process that simulates the natural conditions under which diamonds form in the Earth's mantle.

Here's an overview of how lab-grown diamonds are produced using the HPHT method:

1. Carbon Source: The process begins with a carbon source material, such as graphite. This source material contains carbon  lab diamond rings platinum vs goldatoms, which are the building blocks of diamonds.

2. High Pressure: The carbon source material is subjected to extremely high pressure, typically around 725,000 pounds per square inch (psi) or more. This pressure is necessary to transform the carbon atoms into a diamond crystal lattice structure. The pressure mimics the conditions deep within the Earth's mantle where natural diamonds form.

3. High Temperature: Along with high pressure, the process involves high temperatures, usually between 2,200 to 2,800 degrees Celsius (4,000 to 5,000 degrees Fahrenheit). The combination of high pressure and high temperature causes the carbon atoms to rearrange into diamond crystals.

4. Growth Process: The carbon source material is placed in a growth cell along with a small diamond seed crystal. The high pressure and temperature cause the carbon atoms to vaporize and then crystallize on the diamond seed, gradually building up a larger diamond crystal.