A na-emepụta diamond toro diamond n'oge a site na iji ụzọ abụọ - CVD na HPHT.Ihe okike zuru oke na-ewekarị ihe na-erughị otu ọnwa.N'aka nke ọzọ, ihe e kere eke diamond eke n'okpuru jikọrọ ọnụ nke Ụwa na-ewe ọtụtụ ijeri afọ.
Usoro HPHT na-eji otu n'ime usoro mmepụta atọ ndị a - eriri eriri, eriri cubic na pịa nkewa-sphere.Usoro atọ a nwere ike ịmepụta nrụgide dị elu na ọnọdụ okpomọkụ nke diamond nwere ike ịmalite.Ọ na-amalite site na mkpụrụ diamond nke na-abanye n'ime carbon.A na-ekpughe diamond ahụ na 1500 Celsius ma tinye ya ka ọ bụrụ 1.5 pound kwa inch square.N'ikpeazụ, carbon na-agbaze ma mepụta diamond lab.
CVD na-eji obere mkpụrụ diamond dị mkpa, nke a na-emekarị site na iji usoro HPHT.A na-etinye diamond ahụ n'ime ụlọ a na-ekpo ọkụ ruo ihe dịka 800 Celsius nke jupụtara na gas nwere carbon, dị ka Methane.Mgbe ahụ, gas na-abanye na plasma.Carbon dị ọcha sitere na gas na-arapara na diamond na crystallized.