INSIGNIA. — Both bishops and canons may determine their insignia.
The episcopal insignia are the zucchetto and the violet beretta, the pectoral cross, the gemmed ring, the mitre, the crozier, and the special vestments. In accordance with the current liturgical laws, bishops may use the special vestments from the moment of their appointment, while they may use the cross, the ring, the crozier, and the pontifical vestments only after consecration (can. 349 § 1, n. 2).
The canons of cathedral and collegiate chapters also have special insignia; these are not uniform everywhere nor are they determined by common law, but are established in the bull of erection or granted subsequently by apostolic privilege (can. 409 § 1). All members of the chapter, whether titular or honorary canons, may use these insignia, but always within the territory of the diocese; outside the diocese, they may use them only when accompanying their ordinary bishop or when representing him in councils or other ecclesiastical solemnities, or when representing the chapter (can. 409 § 2).
Besides canons, beneficiaries also have the right to use special insignia.