Atụmatụ
A na-emepụta okpu ahụ site na nchara carbon dị elu, nke na-esi ike mgbe ọgwụgwọ okpomọkụ gasịrị.
Ihe eji okpu okpu: nke ihe eji eme ihe eji enyo enyo, nke siri ike, njide di nma, nwere ike ibelata nlọghachi nke igbutu, nke na-abawanye oru oma.
The okpu: emeso ya na mma polishing na elu dị mma na-egbuke egbuke.
Ngwa
Okpu bụ ngwá ọrụ e ji egbutu ihe, nke e ji ígwè mee (na-abụkarị ígwè siri ike, dị ka ígwè).A na-ejikarị anyụike egbutu osisi.A pụkwara iji ha mee ihe dị ka ngwá ọrụ osisi iji bepụ akụkụ ndị dị arọ.
Otu esi eji okpu
Oghere mkpọ okpu ejiri aka abụọ bụ otu aka n'ihu nke ọzọ n'azụ, aka abụọ na-ejide aka anyụike.Jide aka anyụike jiri aka abụọ, ma n'akụkụ ibe gị ma ọ bụ na etiti oge, dabere ma ike ịkpụ dị mkpụmkpụ ma ọ bụ ogologo.Mgbe ị na-egbutu ebe dị anya, ọ na-abụkarị aka abụọ dị nso iji jide aka anyụike;Maka ogologo mbepụ, a na-ejide aka anyụike n'ihu ibe ya, na ọbụna n'azụ aka.Usoro a nke ijide anyụike ga-arụkọ ọrụ na akụkụ ụta ụkwụ nke ahụ mmadụ, nke na-abụghị nanị na-enyere aka ịkpụcha ụdị ọ bụla, kamakwa ọ nwere ike igbochi ịcha na-adịghị mma site na-emerụ ahụ mmadụ, ma nwee ike melite arụmọrụ ọrụ.
