The tiara belonged to Anne’s paternal grandmother Princess Alice of Battenberg, and it was worn by Anne’s daughter Zara Tindall to her 2011 wedding ceremony to Mike Tindall.

Alexandra Michell, Gemologist at Status Pawnbrokers Hatton Backyard, beforehand stated: “There isn’t a shock that the bandeau is of a meander design (Greek key) and has a centre laurel and honeysuckle ornament both facet.

“It’s studded with diamonds set in a white treasured steel extra more likely to be platinum due to the period it was made. It’s perceived to be made by Cartier in France.

“It isn’t identified how a lot the tiara is value, however I estimate it to be value over £1million and if it’s a Cartier piece, it may very well be as a lot as £2million to £4million.”