Gems and Jewelry Wonders of the British Royal Family
7. The engagement ring of Grace Kelly
Worn by: Princess Grace of Monaco
Since: 1956
Value Approximation: $38.8 million*
Grace Kelly's engagement diamond is one of the most expensive engagement rings in history, currently valued at approximately $40 million when adjusted for inflation. When Prince Rainier III proposed to her in the mid-1960s, the ring was valued at over $4 million, making it an extravagant symbol of their love.
Despite the passing of the Hollywood icon who became a princess, the ring's value has only appreciated over the years, reflecting both its exquisite craftsmanship and the enduring legacy of Grace Kelly's life and style.

The Engagement Ring of Grace Kelly
The stunning 10.48-carat diamond engagement ring, crafted by Cartier, is currently held by the Grimaldi family. This emerald-cut diamond ring is not only one of the most iconic pieces of royal jewelry but also holds a significant place in history as one of the most famous royal engagement rings ever.