Metoda HPHT (wysokie ciśnienie i wysoka temperatura)
The High Pressure High Temperature (HPHT) method is one of the main techniques used to create synthetic diamonds in a laboratory. This method simulates the natural conditions that lead to the formation of diamonds in the Earth’s crust.
The principle of the HPHT method is to apply high pressure and temperature to a base material that contains carbon (such as graphite or a diamond crystal). This process allows the carbon atoms to arrange themselves into the crystal structure of a diamond. The pressure typically ranges from 5 to 6 gigapascals (GPa) and the temperature from 1400 to 1600°C. There are different variations of the HPHT method but in general, the high pressure is generated using a hydraulic press and the high temperature is achieved using induction or resistance heating. This process can take several hours to several days, depending on the size and quality of the diamond required.
The HPHT method is capable of producing large and clear diamonds with a brilliant luster. These diamonds have the same chemical and physical properties as natural diamonds and are widely used in jewelry making and for industrial purposes.
