If it damages diamond, then it obviously went beyond the crystalline phase of diamond. Diamonds would therefore be easier and less time-consuming to manufacture than M-carbon, or would it?

If it damages diamond, then it obviously went beyond the crystalline phase of diamond. Diamonds would therefore be easier and less time-consuming to manufacture than M-carbon, or would it?


Doesn't matter. Diamond is stable at low temperatures and pressures, the new M-carbon state, and an intermediate H-carbon state decay rapidly at low pressure.

Will it be possible to make "diamonoid" objects with M-carbon fibers in bulk diamond? Maybe. Right now even research on diamonoid structures like starting with carbon containing nanotubes and adding pressure and heat are in their initial stages. (The goal is to make materials like diamond in hardness and other properties, but that doesn't shatter when hit.)

What is the distance from the Laboratory to the Factory?
How long must Graphite be held at high pressure, to 'transform'?
For making in quantity, what are the size limits of pressure chambers?
What are the costs of attaining such pressures?