nˈætʃɚɹəl θˈæliəm aɪ ˈaɪədˌaɪd wʌz fˈɜːst dɪskˈʌvɚd ɪn ɐ nˈætʃɚɹəli əkˈɜːɹɪŋ sˈɛɾɪŋ ɪn tˈuː θˈaʊzənd sˈɛvəntˌiːn æz ɐ ˌɔːɹθoːɹhˈɑːmbɪk pˈɑːlɪmˌoːɹf kˈɔːld nˈeɪɾɐlˌɪjɐmˌælɪkˌaɪt.
Natural thallium(I) iodide was first discovered in a naturally occurring setting in 2017 as a orthorhombic polymorph called nataliyamalikite.