"O Dieu! Que de bijoux", aria of Margarethe from the opera "Faust" ("Margarethe") "O Dieu! Que de bijoux", aria of Margarethe from the opera "Faust" ("Margarethe") Main opus "Faust" ("Margarethe"), opera in 5 acts, libretto by Jules Barbier and Michel Carré, based on Goethe´s "Faust I"