I have always believed, and posted here, that the Regal Circlet was made in 1853 from Queen Adelaide's and redone in 1858 because of the Hanover claim. And I relied also on Bury. But that does not explain the Rundells one.
I think I will wait for "the book" rather than write to the Royal Collection at this stage.
--Previous Message-- : Nellie, is it possible that the circlet was : renovated in 1858? Were Hanover diamonds : removed from it, necessitating partial : resetting? I think you might want to : consider asking the Royal Collection about : the discrepancy in their descriptions. :