I wonder how long it takes to produce a diamond? On the site you wrote that you managed to synthesize a crystal size of 1.5×1.5 mm, this is a huge achievement, but still it is not enough.
Yes, I agree it is a success no matter how long it takes the main thing that was possible. This project will not be able to immediately supply a huge amount of raw materials, but in the future I am sure the process will be improved.