"How to Make a Real Diamond - (Not Clickbait)" Today we tour an Industrial diamond manufacturing facility, that makes real diamonds right here in the USA. Utah to be exact. US Synthetic uses massive presses the size of a car to smash diamond dust into one large solid synthetic diamond disk. It only takes about a million pounds worth of pressure. No biggie. These black diamonds are used for industrial drilling rigs, or to make frictionless rotating bearings that last decades. Also... US Synthetic