How Princess Diana’s $500 Million Wedding Tiara Broke Corporate Rules

The Spencer Tiara, estimated to be worth more than $500 million in 2024, dates in its modern form to the 1930s, although elements date back to the 18th century.

The central section is said to have been given to Lady Cynthia Hamilton, Diana’s grandmother, in 1919 and later reconfigured in 1937 by Garrard, the former court jeweler.

Unlike the geometric precision of many royal tiaras, the Spencer piece features scrolling diamond streamers and floral motifs, with a heart-shaped centerpiece.

Diana wore the tiara on loan from her father, John Spencer, the 8th Earl Spencer. Her sisters, Lady Jane Fellowes and Lady Sarah McCorquodale, had also worn it at their own weddings. Today it is owned by her brother, Charles Spencer, the 9th Earl Spencer.

A palace source said: ‘There has long been an established understanding that a bride joining the royal family would draw on the monarch’s collection – it is part of the symbolism of joining the institution. That was the precedent, and many assumed she would follow it without question.

Instead, Diana chose a piece rooted in her own family’s history. It wasn’t an act of rebellion in a loud or confrontational sense, but it was deeply personal. She indicated that even as she stepped into her new role, she intended to stick with where she came from.

“Looking back, that decision feels emblematic of the way she would approach royal life. She respected the structure, but she was unwilling to give up her individuality. The choice of the tiara was an early glimpse of the independent spirit that would come to define her public identity.”