Turquoise and diamond ornament brooch| Royal Wedding gift from the Prince and Princess of Wales to Princess Mary of Teck.
The jewel was a wedding gift in 1893 from Queen Mary’s in-laws, the Prince and Princess of Wales, later King Edward VII and Queen Alexandra.
The center of the ornament is a large round turquoise cabochon, surrounded from 14 diamonds.
Above on the left in the picture, Queen Mary wearing the Turquoise Diamond Cluster Brooch with a pendant, it looks like one of the „chips“, the smaller parts of the Cullinan Diamonds.
After her death, in 1953 the turquoise brooch, was inherited by her granddaughter, Elizabeth II.
Queen Elizabeth II, wore the Turquoise and Diamond Brooch three times, at least on 5th April in 2020 when she had addresses to the UK and Commonwealth in a special broadcast recorded at Windsor Castle.