Show here Is how to make your own diamonds but they are small dallas texas how chemistry makes real diamonds in the laboratory synthetically was described at the meeting of the american chemical society here by lewellyn D lloyd of the chemistry department of mcpherson college mcpherson kansas under the direction of dr J wll wil lard hershey at mcpherson synthetic diamonds have been prepared by successive groups of graduate students here Is the simple formula tor for making diamonds mix two parts of chemically pure iron filings with one part of pure sugar carbon by volume place in a graphite crucible and heat to a temperature ol of at least degrees centigrade or a little over an hour then remove the crucible and plunge into a freezing solution of 0 f ice ic ened and salt brine treat the hard hardened miss mass with hot aqua regla regia for hours to dissolve the iron and digest the residue as much as possible with various acids tiny but real diamonds finally search the remaining carbon dust for the diamonds use a microscope m in the search for any diamonds will be very tiny but they will be diamonds which Is what you started out to make but seriously the simple statements above have required a great amoun amount t of research to bring them bout about a when dr hershey began there was no way in which temperatures of degrees could be controlled in a fashion required in the research and there was the problem of building a fire brick furnace that could withstand the high temperatures pera tures the continued research has ha s shown hown mr lloyd indicated that the formation of the diamonds seems to depend on how fast Is the cooling of the heated healed mass ot of iron and carbon this cooling and the tremendous pressures which are built up inside the iron carbon mass during cooling seem to turn black carbon into the transparent carbon which man calls a diamond As white hot molten iron cools to a red solid it expands mr lloyd said As it cools from a red solid to room temperature it contracts thus the outside of the iron which cools more rapidly than the inside of the mass is contracting while the inside Is still expanding the carbon dissolved in the iron is thus subjected to a pressure estimated at pounds to the square inch |