Popular Mechanics (South Africa) - - Skills -

For un­known rea­sons, con­cen­trated UV-C light, which our at­mos­phere fil­ters out, breaks the car­bon atoms off a di­a­mond. Or you can heat it with a blow­torch, then ex­pose it to oxy­gen to make it evap­o­rate into car­bon diox­ide.

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