collar jewel of the 18°
Rose Croix Degrees
Membership
Under the English Constitution, this 'non plus ultra' group of Masonic degrees is practiced separately from the three Degrees of the Craft. Every candidate must have been a Master Mason for at least one full year, be in good standing with a regular and recognised Craft Lodge, and profess the Trinitarian Christian Faith. These are the requisite qualifications as specified by the Supreme Council (see below).
Organisation
Assemblies of Freemasons working this set of degrees are called Chapters. They work a Perfection Ceremony to bring in new members, as well as an Installation Ceremony for presiding officers. Membership in a Rose Croix Chapter is by invitation and allows a Brother to receive the 4th through the 18th Degrees in Freemasonry.
Progression beyond the 18th Degree is possible, although restricted to those who have previously acted as presiding officer of a Chapter. The 33rd Degree is only conferred upon presiding officers of Districts, and certain senior members of the Supreme Council in London.
Governing body
The Rose Croix Degrees are administrated by the Supreme Council in London. Its symbol is a crowned double eagle holding a sword.