Meet the Different Types of Lab Grown Diamonds
The journey begins by taking a tiny carbon seed from an existing diamond. From this starting point, the scientists choose one of two approaches: High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD):
- HPHT Lab Grown Diamonds: The seed is placed inside a sealed chamber and subjected to intense temperature and pressure in the presence of free carbon atoms. Once the chamber conditions mimic those deep in the ground, the carbon atoms begin to join the seed, creating a lab grown diamond.
- CVD Lab Grown Diamonds: The seed is placed in a sealed vacuum chamber that is then flooded with a carbon-rich gas, forcing the carbon atoms to eventually settle on the seed. The layers gradually build before a finishing process involving preset pressure and temperature levels is performed.
Both methods are designed to mimic the natural processes that cause diamonds to form, and as such, lab grown diamonds are identical to natural diamonds when viewed by eye. The result is a faster, more efficient way to obtain a rough stone that can then be cut, polished, and set.
Although there may be very subtle growth markers present deep inside the structure of lab grown diamonds, only an expert with specialist knowledge will be able to tell the difference. And even then, the differences are not visible to the naked eye due to the care and attention of the fabrication scientists.