Applied to the alchemist, the twin goal symbolized their evolution from ignorance to enlightenment, and the stone represented a hidden spiritual truth or power that would lead to that goal.
ɐplˈaɪd tə ðɪ ˈælkɪmˌɪst, ðə twˈɪn ɡˈoʊl sˈɪmbəlˌaɪzd ðɛɹ ˌɛvəlˈuːʃən fɹʌm ˈɪɡnɚɹəns tʊ ɛnlˈaɪʔn̩mənt, ænd ðə stˈoʊn ɹˌɛpɹᵻzˈɛntᵻd ɐ hˈɪdən spˈɪɹɪtʃˌuːəl tɹˈuːθ ɔːɹ pˈaʊɚ ðæt wʊd lˈiːd tə ðæt ɡˈoʊl.