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Technology Overview

There were two available production methods to grow diamonds; Chemical Vapour Deposition (CVD) and High Pressure High Temperature (HPHT). The HPHT method could grow large size diamonds at relatively commercial yields with commonly available technology. The problem was that this technology could not grow what the world wanted, colourless high purity Type IIa single crystal diamonds.  This is due to a catalyst used in the HPHT method that stabilizes the growth process but also causes a brown-orange colouration that was not desirable in the Jewellery world.

As such, the technology chosen by the team from the beginning of its operations was a type of CVD process called Microwave Plasma Chemical Vapour Deposition (MPCVD). This technology, although simpler in form, is much more complicated and expensive than HPHT. The technology works at lower pressures exposing multiple diamond seeds to a carbon-rich environment. At the optimised conditions, carbon starts depositing, the seed starts accepting the available carbon, and the natural process of crystallisation starts.

IIa Technologies is unparalleled in its quantity and quality of CVD diamonds and its ability to work with customers to customise their product for specific applications.