Great Pearl Robbery

Known as the "Mona Lisa of pearls", the necklace was a string of 61 flawless blue-pink pearls with a diamond clasp . It was created over a period of ten years, due to the time it took to source the pearls and match them . Max Mayer had it insured by Lloyds for £135,000 (equivalent to £16,779,163 in 2023) Joseph "Cammi" Grizzard, also known as "Cammi", planned their theft . Lloyds and Scotland Yard called on Alfred Leach to investigate the theft . Leach was an ex-Superintendent who had worked in the Hatton Garden area for years, and knew Grizzard and his gang well . Leach was also a private detective for the underwriters of Lloyd's of London .