It's an interesting theory, but in absence of spring loading, what is causing the seating, and the graphite sheets, only conducts well along their length, not through the sheets (as in this application) which would be many layers thick as the diamond dust will still have comparatively a large particle size. Have you ever tried it with graphite? Maybe you would prefer it. Wasn't Moly (still made?) embedded with really fine copper back when all engine blocks were iron.
If you are going just on resistance, it can be proven with a good low resistance meter.
If you are going just on resistance, it can be proven with a good low resistance meter.