Iyi mpeta ya 3.0ct igaragaramo gukata, uburyo bunoze bwo gukata bwatanzwe na Henry Crossbard.Yahimbwe mu 1977, gukata imirasire yakozwe nabanyabukorikori bifuzaga guhuza imiterere myiza yikata rya zeru hamwe nubucyo bwikariso nziza.
Gukata imirasire bifite ishusho y'urukiramende kandi bigabanya impande enye, hamwe nibice 70 byose, bigabanya cyane kugabanuka no kwerekana urumuri ruva mumabuye y'agaciro.Ntabwo ifite igipimo cyinshi cyo kugumana kandi cyoroshye-guhuza imiterere ya zeru, ariko kandi ifite imikorere myiza yumucyo hamwe no gukata neza.Kubwibyo, gukata kumurika nuburyo bwiza bwo kwerekana ububengerane bwa diyama no kumurika hiyongereyeho gukata kuzengurutse.
Ibi bivuze ko imiterere ikata yumucyo ikwiranye no gukora amabuye y'urukiramende, iyi mpeta rero irakwiriye cyane kuri wewe.Iyi mpeta isa nuburyo busanzwe bwo gutema amabuye ya zeru, kandi ifite igikundiro cyinshi, bityo bizaba byiza kubantu bishimira ikimenyetso cyigihe.
Ikintu nyamukuru cyiganje kumasoko nigipimo gisanzwe cyiza cya diyama yaciwe, nubwo diyama yaciwe izengurutswe izwiho kwerekana neza ubwiza bwa diyama, ariko mugukata no kumiterere, diyama idasanzwe irarenze.Kubanyeshuri bakunda diyama kare kandi bashaka kugira urumuri ruzengurutse rumeze nka diyama, iyi mpeta nziza yacagaguye ya diyama iha abantu ibyiyumvo bisusurutsa hamwe nimiterere yihariye, rwose nibyo wahisemo.