A signature of real-life royalty and fairy tales alike, the tiara is a coveted piece of jewelry often passed down from generation to generation, rarely leaving a family’s possession. The spectacular Cartier diamond tiara is a rare opportunity to gift a piece of jewelry history that can become a prized heirloom.

Created by the esteemed Parisian jewelry maison in 1935, the extraordinary halo head ornament is crafted with platinum and composed of graduating palmette motifs set with 520 brilliant, single-cut diamonds of approximately 42.15 carats, as well as 92 baguette diamonds of approximately 8.03 carats. In this visually captivating Art Deco design, the peak of the tiara is tipped with an approximately 1.05-carat collet-set, half-moon-shaped diamond. A unique aspect of this breathtaking masterpiece is a versatile mechanism that allows the tiara to transform into a necklace. After being acquired in Italy, the mesmerizing work of art has been locked away in a private vault for 12 years and has never been offered for sale—until now.