Kugura imitako yifuzwa ya diyama, abaguzi bakeneye kumva diyama muburyo bw'umwuga. Inzira yo kubikora nukumenya 4C, amahame mpuzamahanga yo gusuzuma diyama. Cs enye nuburemere, Icyiciro cyamabara, Icyiciro cyiza, na Cut Grade.
1. Uburemere bwa Carat
Uburemere bwa diyama bubarwa muri karat, cyangwa bakunze kwita “amakarita”, karat 1 ihwanye n amanota 100, diyama ya karat 0.5, irashobora kwandikwa nkamanota 50. Calorie imwe ihwanye na garama 0.2, bivuze ko garama imwe ihwanye na karori 5. Nini nini ya diyama, ntigomba kuba gake. Ku nshuro ya mbere abaguzi ba diyama, gerageza utangire uhitemo ubunini bwa diyama. Nyamara, na diyama ebyiri zifite uburemere bumwe bwa karat zirashobora gutandukana mubyagaciro bitewe namabara atandukanye, kumvikana no gukata, kuburyo hariho izindi ngingo zigomba kwitabwaho mugihe uguze diyama.
Icyiciro cyamabara
Bikunze kugaragara ku isoko ni diyama ya Cape ya diyama, ishobora gushyirwa mu rwego rwa "ibara ritagira ibara" kugeza "hafi ibara" na "umuhondo werurutse". Urwego rwamabara rugenwa ukurikije GB / T 16554-2017 "Diamond Grading", guhera kuri "D" kugeza kuri "Z". Ibara ni D, E, F, bizwi kandi ko bitagaragara neza, ntibisanzwe, itandukaniro riri hagati yabo kwishingikiriza kubahanga bitonze kugirango bamenye. Ibara risanzwe ni G kugeza L, bizwi nkibara ritagira ibara. Abahanga bizoroha gutandukanya, ariko abantu basanzwe biragoye kubitandukanya, niba bishyizwe mumitako biragoye kubimenya. Ibara riri munsi ya M, izwi kandi nkumuhondo wijimye, abantu basanzwe barashobora gutandukanya, ariko ikiguzi biragaragara ko gihenze cyane. Mubyukuri, diyama ifite andi mabara, yitwa diyama yamabara, irashobora kuba umuhondo, umutuku, ubururu, icyatsi, umutuku, umukara, kaleidoscope, ariko gake cyane, agaciro gakomeye cyane.
3. Ibisobanuro
Buri diyama irihariye kandi irimo ibiyirimo, nkibimenyetso bisanzwe byavutse, kandi umubare, ingano, imiterere namabara yibi bintu byerekana diyama isobanutse kandi idasanzwe. Mubyukuri, diyama nyinshi zirimo kugaragara cyane mumaso. Nibintu bike byinjizwa muri diyama, niko urumuri rucika intege, kandi diyama irabagirana kabiri. Dukurikije ibipimo by’ubushinwa “diyama ya diyama”, ubwumvikane buke bugomba gukorwa munsi yikubye inshuro 10, kandi amanota yabyo ni aya akurikira:
LC ni ntamakemwa
Byoroheje cyane imbere nibiri hanze ya VVS (abahanga bagomba kureba neza kugirango babibone)
VS Gitoya imbere ninyuma (biragoye kubuhanga kubibona)
SI micro imbere ninyuma (byoroshye kubuhanga kubona)
P ifite imiterere yimbere ninyuma (igaragara kumaso)
Diyama iri hejuru ya VVS ntisanzwe. Ibiri muri VS cyangwa SI nabyo ntibigaragara mumaso, ariko igiciro gihenze cyane, kandi abantu benshi baragura. Kubijyanye na P-urwego, igiciro birumvikana ko kiri hasi cyane, kandi niba kimurika bihagije kandi kimurika bihagije, birashobora no kugurwa.
Bane, Gukata
Gukata byerekana ibintu byinshi, usibye imiterere, harimo Inguni, igipimo, guhuza, gusya n'ibindi. Iyo igipimo cyo gukata diyama gikwiye, urumuri rumeze nkindorerwamo yerekana indorerwamo, nyuma yo kuvunika ibice bitandukanye, byegeranye hejuru ya diyama, bigatanga urumuri rutangaje. Diyama yaciwe cyane cyangwa idakabije bizatuma urumuri rutemba ruva hasi kandi rutakaza urumuri. Kubwibyo, diyama yaciwe neza mubisanzwe ifite agaciro kari hejuru.
Igihe cyo kohereza: Nzeri-22-2023