It measures 258.12 grains (64.5 carats, 69.8 carats with its diamond cap) making it the third-largest (documented) well-formed natural pearl drop.
[citation needed] In 2004, a large pearl named the Pearl of Kuwait was consigned by an undisclosed private family for auction at Christie's in London.
[1] Its owners have made claims that it is the Tudor pearl depicted in the portraits of Mary I of England.
[2] The pearl is currently on loan to the Smithsonian, who make no claims of its history or provenance.
The Smithsonian does say that it is exceptional, that it weighs 64.4 carats, that its setting is 19th century in style, and that the pearl itself recalls those that originate from the Persian Gulf.