The Sold-out piece was described as, “An Art Deco diamond set brooch, of rectangular shape with corners, cut away, with an openwork pattern comprising of a central, round brilliant-cut diamond with an estimated weight of 0.35 carat, with a baguette-cut diamond to the top and bottom of the rectangle, total estimated diamond weight 4.5 carats, all mounted in platinum, circa 1920, measuring approximately 4.4×2.2cm, gross weight 11.4 grams.
A sparkling Art Deco brooch. This brooch is of a classically Art Deco design, with geometric shapes and fine openwork platinum set throughout with lively diamonds. This beautiful piece was made around 1920 and captures the glamour and elegance of the Jazz Age.“
Reportedly the vintage piece was sold sometime in January 2022. Catherine celebrated her 40th birthday in January 2022 so it could be her 40th birthday present from either the then Prince Charles or Prince William.