Process for preparing a diamond substance

A process of producing a diamond substance with a first inner nozzle and a second outer nozzle, comprising the steps of:

• (a) forming a first mixture comprised of oxygen gas and a hydrocarbon gas within said first inner nozzle, wherein:
• 1. such hydrocarbon gas contains from about 1.01 to about 1.1 moles of carbon for each mole of oxygen present in such first mixture, and
• 2. said first mixture contains at least about 10 volume percent of hydrocarbon gas,
• (b) igniting said first mixture to produce a flame core;
• (c) forming a second mixture comprised of hydrogen and oxygen in said outer nozzle, wherein:
• 1. said second mixture is comprised of at least 2 moles of said hydrogen for each mole of said oxygen present in the second mixture,
• 2. hydrogen gas and oxygen gas comprise at least about 20 volume percent of said second mixture,
• 3. said second mixture contains up to about 5 volume percent of hydrocarbon gas;
• (d) igniting said second mixture to produce a flame sheath;
• (e) disposing said flame sheath around said flame core so that said flame sheath completely surrounds said flame core and completely shields said flame core from the ambient atmosphere, thereby producing a composite flame;
• (f) establishing a difference of potential between said composite flame and a substrate of at least about 250 volts,
• (g) causing a current flow between said composite flame and said substrate of at least about 10 milliamperes, and
• (h) contacting said composite flame with a substrate.