Idan aka kwatanta da launin ruwan kasa corundum da farin corundum, crystal corundum guda ɗaya yana da babban taurin, tauri, siffa guda ɗaya mai siffar lu'ulu'u, da ƙarfin juriya ga rarrabuwa.
Launin crystal corundum guda ɗaya shine rawaya mai haske, kuma nau'in samfurin shine crystal hexagonal
Lokacin aikawa: Afrilu-28-2023