INSIGNIA. - Both bishops and canons may use certain insignia.
Episcopal insignia are the violet skullcap and biretta, the pectoral cross, the gemmed ring, the mitre, the crozier, and special vestments. In accordance with the liturgical laws in force, bishops may use special vestments from the moment of their appointment, whereas they may use the cross, ring, crozier, and pontifical vestments only after consecration (can. 349 § 1, n. 2). The canons of cathedral and collegiate Chapters also have special insignia; these are not the same everywhere, nor are they determined by common law, but are established in the bull of erection or subsequently granted by apostolic privilege (can. 409 § 1). All members of the Chapter, whether titular or honorary canons, may use them, but always within the territory of the diocese; outside the diocese they may use them only when they accompany their ordinary bishop or represent him at councils or other ecclesiastical solemnities; or when they represent the Chapter (can. 409 § 2).
Besides canons, beneficed clergy also have the right to use special insignia.