Allegedly recovered from the legendary King Solomon’s Mines, the uncut, rough stone was acquired in 1544 by the scandalous De Luca family. Gifted as part of a dowry in 1612, the fate of the diamond, along with several other high profilehigh-profile gems, werewas unknown after the Franco-Spanish warWar of 1635, beforeuntil it mysteriously reappeared over three centuries later.

Sold last year to the Moretti Brothers jewellers for just over £22 million, neither time nor conflict havehas dimmed its brilliance. Indeed, the twin eighty-year-old brothers suggestssuggest that the value of the now cut and polished 90 carat90-carat diamond has already increased by at least 50%. It will be on display for four weeks only.