The Papal Tiara, also known as the Triple Tiara, or in Latin as the 'Triregnum', in Italian as the 'Triregno' and as the 'Trirègne' in French, is the three-tiered jewelled papal crown, supposedly of Byzantine and Persian origin, that is a prominent symbol of the papacy. The Supreme Pontiff's arms have featured a "tiara" since ancient times, notably in combination with Saint Peter's crossed keys.