Ityhubhu yesafire ekhazimlisiweyo yinxalenye yokusebenza okuphezulu eyenziwe nge-monocrystalline aluminium oxide (Al₂O₃). Ngokukhula kwekristale okuphucukileyo kunye nokupholisha ngokuchaneka kwamanqanaba amaninzi, inika indibaniselwano yokucaca kwe-optical, ukuqina koomatshini, kunye nokunyamezela kobushushu okuncinci okunokulingana nezinto ezimbalwa. Imiphezulu egudileyo kakhulu kwiindonga zangaphakathi nezangaphandle ivumela ukuhanjiswa kokukhanya okugqwesileyo kunye nongcoliseko oluncinci, okwenza iityhubhu zesafire zibe yeyona nto ibalulekileyo kwizicelo ze-optical, semiconductor, analytical, kunye nezemizi-mveliso.