Prince Albert's Sapphire Brooch, aka Queen Victoria's Wedding Brooch was presented to Queen Victoria on February 9, 1840 – the day before their wedding. She wore her present from “dearest Albert” on their wedding day & frequently afterwards, up until Albert's death. It passed from Queen Victoria to the three queen consorts, Alexandra of Denmark, Mary of Teck & Queen Elizabeth The Queen Mother, then came to Elizabeth II on her accession to the throne in 1952. The large oblong sapphire is set in gold & surrounded by twelve round diamonds. The carat weight of the sapphire has never been disclosed but by the size it is estimated to be around 20-30 carats. The current price per carat of a unique sapphire is about £120,000; this results in a price range of around £4 million, not taking into account its royal provenance, which would no doubt add much more to the value of the piece.