Regalia (/rəˈɡeɪl.i.ə/ rə-GAYL-ee-ə) is the set of emblems, symbols, or paraphernalia indicative of royal status, as well as rights, prerogatives and privileges enjoyed by a sovereign, regardless of title.
[note 1] The term can refer to the rights, prerogatives, and privileges that are held exclusively by any sovereign, regardless of title (emperor, grand duke, etc.).
Crown jewels may have been designated at the start of a dynasty, accumulated through many years of tradition, or sent as tangible recognition of legitimacy by some leader such as the pope to an emperor or caliph.
In the Roman Empire, the color Tyrian purple, produced with an extremely expensive Mediterranean mollusk extract, was in principle reserved for the imperial court.
The use of this dye was extended to various dignitaries, such as members of the Roman senate, who wore stripes of Tyrian purple on their white togas, for whom the term purpuratus was coined as a high aulic distinction.
In republics, the presidential sash, common especially in Latin American countries but appearing elsewhere in the world as well, has a role similar to that of royal regalia: distinguishing the head of state.