sˈæmpəlz ʌv nˈɑː tˈuː tˈiː, wˌɪtʃ ɑːɹ kˈʌlɚləs wɛn ˌæbsəlˈuːtli pjˈʊɹ, dʒˈɛnɚɹəli ɐpˈɪɹ pˈɜːpəl ɔːɹ dˈɑːɹk ɡɹˈeɪ dˈuː tə ðɪ ɪfˈɛkts ʌv ˈɛɹ ˌɑːksɪdˈeɪʃən.
Samples of Na2Te, which are colourless when absolutely pure, generally appear purple or dark gray due to the effects of air oxidation.