Cullinan III & IV Brooch
The Cullinan III & IV brooch is one of the most expensive pieces owned by the Royal Family. It is worth $1.5 million. The brooch was first presented in 1907 to King Edward VIII and features a 3106 carat diamond that’s uncut.
Greville Emerald Kokoshnik Tiara
The Greville Emerald Kokoshnik tiara has been a part of the Royal Family’s collection in 1919. In 2018, it was presented to Princess Eugenie in 2018 in honor of her wedding day. It features a 93.7 carat emerald, which helps contribute to the $5 to $10 million value of the tiara.