His Jewel is the Cornucopia, which is an exact duplicate to the Senior Steward's Cornucopia. The Cornucopia signifies the "Horn of Plenty".
It is a goat horn filled with the "fruits of your labors" and represents a job well done.
The Junior Steward is tasked to understudy the Senior Steward position and fill in for the Senior Steward in his absence. The Junior Steward's principle role is to assist the Senior Steward and the Senior Deacon in the preparation of the Candidates.
The Junior Steward position is similar to that of a Supervisor. The Junior Steward of a Masonic Lodge is an appointed officer of the Lodge.