Dear Osman Ali Sadek Ibrahim this is a pretty exciting question which is certainly of broad general interest to many other RG members as well. This new approach is often called "Diamonds from the sky". For example, please have a look at the following potentially useful links:
A British Entrepreneur Is Making ‘Zero-Impact Diamonds’ That Remove Carbon Dioxide From the Air
There is also an instructive YouTube video about this topic available which might be worth watching:
https://www.youtube.com/watch?v=kQBlpENiFzo
Personally I'm rather skeptical if this will help to significantly reduce greenhouse gases like CO2 in the atmosphere. In view of climate change we are talking about millions of tons of CO2.
The question in itself talks about the exciting opportunities to drive the interest of the researchers. As of now, the available processes are complex and do require sophisticated infrastructure. A perfect catalyst may solve this issue.
There are existing operations that convert carbon-bearing "graphite" into artificial diamonds. They are formidable factories achieving tremendously high temperatures and pressures. Extremely complex operations performing under very dangerous conditions. Nothing like you and I could do.
If you are vaccinated against covid, your so-called vaccine has another carbon-bearing substance called graphene, unknown previously and thought to be very dangerous health-wise.
First I would like to welcome the response of Frank T. Edelmann . As per my knowledge, investors are increasingly paying attention to the tech startups working on these transformations. New York-based Aether Diamonds grows gems in the lab using captured CO2.