Umukoro w'ibanze: Icyegeranyo cy'Imitako Umwandiko w'Igitabo: 4C ni icyegeranyo cy'imitako kigizwe n'imikanda n'ibihera byakozwe mu ifeza ya sterling yongeye gukoreshwa (recycled sterling silver). Ibice byagaragaza imigongo y'amabara y'amasaphire (diamond outlines) aho kuba amabuye nyakuri, biha uburyo bwiza kandi bubungabunga ibidukikije mu mwanya w'amasaphire nyakuri. Imisusire yakozwe hifashishijwe ubugenzuzi bwa 3D (3D modelling), gucapa insa mu bugarama (wax printing) no kuvomera hakoreshejwe uburyo bwa "lost wax casting", hanyuma bikoranishwa kandi bikarangizwa n'intoki. Harimo uburyo bune bw'ubukorane (cuts): brilliant, princess, marquise, na pear. Kuvunika kw'urumuri (polished), ubwoko bw'ibara ryatsindagiye (matte patina), n'ubwoko bwuzuye zahabu (gilded finishes) byongera itandukaniro kandi bigaragaza neza imisusire y'ubunini butatu (three-dimensional form) ya buri gice.

Izina ry'umushinga : 4 C, Izina ryabashushanya : Hanna Korhonen, Izina ry'abakiriya : Hanna K Design & Jewellery.

Soma ibiganiro biheruka n'ibiganiro kubijyanye no gushushanya, guhanga no guhanga udushya hagati yumunyamakuru wubushakashatsi hamwe nabashushanyo bazwi kwisi yose, abahanzi nabubatsi. Reba ibishushanyo mbonera bigezweho hamwe n'ibihembo byatsindiye ibihembo byabashushanyo bazwi, abahanzi, abubatsi n'abashya. Menya ubushishozi bushya kubijyanye no guhanga, guhanga udushya, ubuhanzi, igishushanyo mbonera. Wige ibijyanye nigishushanyo mbonera cyibishushanyo mbonera.