https://en.wikipedia.org/wiki/Staff_of_office
A staff of office is a staff, the carrying of which often denotes an official's position, a social rank or a degree of social prestige
White Staves
Charles Fitzroy, 2nd Duke of Grafton by William Hoare
Charles FitzRoy, 2nd Duke of Grafton (d. 1757), carrying the thin white staff of the Lord Chamberlain
A thin white staff or "wand" is the traditional emblem of certain Great Officers of State and high-ranking officials of the Royal Household in the United Kingdom, namely:
Great Officers of State:
The Lord High Steward
The Lord Great Chamberlain
Senior Officers of the Household:
The Lord Steward
The Lord Chamberlain
Treasurer of the Household
Comptroller of the Household
Vice-Chamberlain of the Household
The "wand", which is around 5 feet 6 inches (1.68 m) in length, is made of white wood and has a silver plate at its base on which is engraved the name of the office to which it pertains.[5] The wands are carried by their holders when on duty on State or other royal occasions, such as State Banquets, Jubilee Services and Royal Weddings, as well as at the State Opening of Parliament (when the Lord Great Chamberlain raises his white staff to signal to the King's messenger, Black Rod, to summon the Commons).[6]
Apart from the Lord High Steward (an office which is only now filled for Coronations), all the above-listed officials were seen carrying their white staves during the State funeral of Queen Elizabeth II.[7] The Lord Chamberlain, as executive head of the Royal Household, ceremonially breaks his white staff at the monarch's state funeral, when he automatically loses office; it is then buried with the sovereign
Robert