Safiro imwe ya kirisiti ni ibikoresho bifite ubukana buhanitse, imiterere ihamye ya chimique hamwe na optique ikorera mu mucyo mugari. Kubera izo nyungu, ikoreshwa cyane mubikorwa bitandukanye birimo ubuvuzi, ubwubatsi, ibikoresho bya gisirikare, indege, optique.
Kugirango imikurire ya diameter nini imwe ya kristu ya safiro, uburyo bwa Kyropoulos (Ky) na Czochralski (Cz) bukoreshwa cyane. Uburyo bwa Cz nubuhanga bukoreshwa cyane muburyo bwo gukura bwa kristu aho alumina yashongeshejwe mukibuto hanyuma hagakururwa imbuto; imbuto zizunguruka icyarimwe nyuma yo guhura nicyuma gishongeshejwe, kandi uburyo bwa Ky bukoreshwa cyane cyane mukuzamura kristu imwe ya diameter nini ya safiro. Nubwo itanura ryibanze ryikura risa nuburyo bwa Cz, kristu yimbuto ntizunguruka nyuma yo guhura na alumina yashongeshejwe, ariko igabanya buhoro buhoro ubushyuhe bwo gushyushya kugirango kristu imwe ikure hepfo kuva kristu yimbuto. Turashobora gukoresha ibicuruzwa birwanya ubushyuhe bwinshi mu itanura rya safiro, nka tungsten crucible, molybdenum crucible, tungsten na molybdenum ingabo, ubushyuhe bwa tungsten nibindi bikoresho byihariye bya tungsten na molybdenum.
