Kusintha kwamtundu wa safiro ku Corundum ndi weniweni, kudzawoneka mitundu yosiyanasiyana mu kuwala kosiyana, komwe kumadziwikanso kuti kusintha kwa mtundu wa corundum kapena chuma chamtundu, kusintha kwa mtundu kumayembekezeredwa chifukwa cha chrome mu corundum.
Zosiyanitsa zachilengedwe ndi SyntheticMa safiro obiriwira amadula protolith wakuda wabuluu kuti awonetse mitundu yambiri yamitundu yobiriwira kapena yabuluu yobiriwira kutsogolo, ndiye kuti miyala yobiriwira yobiriwira imatha kupangidwa.
Orange, mzerewu ndi wopanda mtundu, wowonekera, wonyezimira wagalasi, kuuma 9, mphamvu yokoka yeniyeni 4.016, {0001}, {10 ˉ 10} Cleavage.[1]
Pinki safiro wofiira wa safiro: m'mbuyomu, gulu lapadziko lonse lapansi la miyala yamtengo wapatali limakhulupirira kuti corundum yokhayo yokhala ndi kuya kwapakati mpaka yofiyira yofiyira kapena yofiirira imatha kutchedwa ruby.Zomwe zimatembenuza kuwala kofiira kukhala kuwala kwambiri amatchedwa pinki safiro.
Gem womangidwa mitundu yonse ya miyala yamtengo wapatali yamtengo wapatali kupitirira ruby yotchedwa safiro.Dzina la mchere wa safiro la corundum, mchere wa gulu la corundum.
Yellow safiro imadziwikanso kuti topazi pamabizinesi.Mitundu yosiyanasiyana ya yellow gem grade corundum.Mtundu umachokera ku chikasu chowala mpaka ku canary yellow, chikasu chagolide, uchi wachikasu ndi bulauni wonyezimira wachikasu, ndipo chikasu chagolide chimakhala chabwino kwambiri.Yellow nthawi zambiri imakhudzana ndi kukhalapo kwa iron oxide.