Emblem of the Preceptor of the Knight Templar degree and of the same office in the Rectified Scottish Rite.
This [Patriarchal] Cross when in purple enamel, and edged with gold, is the insignia of all officers of the Grand Encampment below the Grand Master.
Shibboleth Templar Monitor by George Cooper Connor (1894).
A similar two barred cross also appears in 27th degree of the Ancient and Accepted Scottish Rite.
Outside Freemasonry there are several varieties to this cross with names such as the patriarchal cross, the Jagiellonian cross and the cross of Lorraine.
general officer jewel