1. Icyuma cya diamant kizengurutswe nicyuma cyo gukata, gikoreshwa cyane mugutunganya ibikoresho bikomeye kandi byoroshye nka beto, ibikoresho bivunika, ibikoresho byamabuye nubutaka. Diamond yabonye ibyuma bigizwe ahanini nibice bibiri; umubiri fatizo n'umutwe ukata. Substrate nigice cyingenzi gishyigikira igice gihuza umutwe. Umutwe wogukata ugira uruhare mugukata mugihe cyo gukoresha, kandi umutwe wogukata uzahora ukoreshwa mugihe cyo gukoresha. Impamvu umutwe wogukata ushobora kugira uruhare rwo guca ni ukubera ko irimo diyama.

2. Ibipimo ngenderwaho byibicuruzwa bya diyama bizengurutswe cyane cyane bikubiyemo ibintu bikurikira: aperture, crack, umubyimba wibiti, ibimenyetso, nibindi. Mugihe ugura, ugomba kubanza guhitamo icyuma kibisi gihuye nintego yawe. Ukurikije intego, ibyuma bizengurutswe na diyama birashobora kugabanywamo gukata marble, granite, beto, ibikoresho bivunika, amabuye yumucanga, ububumbyi, karubone, hejuru yumuhanda, nibikoresho byo guterana hamwe nubwoko butandukanye bwibiti. Hitamo icyuma cyakozwe nababikora basanzwe bafite ibimenyetso bisobanutse kandi byiza. Kubera ko uburyo bwo gukoresha ibicuruzwa bya diyama bizenguruka bifitanye isano rya bugufi n’ubuzima bw’umukoresha n’umutekano w’umusaruro, mugihe uguze, umugurisha agomba gutanga raporo y’ubugenzuzi bw’abandi bantu kuri ubu bwoko bwibicuruzwa, kugirango hamenyekane ubuziranenge bwibicuruzwa byaguzwe .