Queen Elizabeth's Halo Tiara

Summary
Previous names include the Scroll tiara, the Halo tiara, and the Cartier Halo. Since 2011, the year it achieved massive renown, thanks to the Duchess of Cambridge, it has been called Queen Elizabeth's Halo Tiara. At least, that's how it is referenced at the Royal Collection Trust, where its classification is RCIN 250174. It came to be known as the Scroll tiara because of the 16 "graduated scrolls"; "Cartier" because that's the jewel house that made it in 1936 and from which the Duke of York bought it three weeks before the Abdication of his older brother, an event that made him King George VI; and "halo" because that's what it looks like. And so it is Queen Elizabeth's Halo, meaning the late Queen Elizabeth the Queen Mother, for whom it was purchased. She was only photographed wearing it once, or twice. She gave it to her elder daughter, Princess Elizabeth, for an 18th birthday present. But the younger Elizabeth never wore it even once. In real sisterly hand-me-down fashion, it became Princess Margaret's starter tiara, like training wheels, until she was deemed ready for the Lotus Flower Tiara. (But let us not forget that Princess Margaret wore it to the coronation of her sister in 1953.) The next princess in need of a "starter" tiara, Anne, wore it in the early 1970s until she too advanced to heavier headgear. The tiara was shelved in the vaults for more than three decades, all but forgotten, and hardly thought of even by the most studious of royal jewel enthusiasts, until the day of Saint Catherine of Siena, 29 April 2011. Catherine "Kate" Middleton wore it to hold her veil in place as she married Prince William, newly created Duke of Cambridge, at Westminster Abbey.