The $500,000 heirloom might not be the most expensive ring on the list, but its sentimental value is worth much more. Princess Diana famously wore this ring while she was engaged to Prince Charles.

The most expensive royal engagement ring belongs to Grace Kelly, the Hollywood actress who became Princess of Monaco. Kelly’s Cartier ring was given to her by Prince Rainier III in 1956.

From Jennifer Lopez's pink engagement ring to Kim Kardashian's 15-carat stunner, read on for a roundup of some of the most expensive celebrity rings of all time.

Instead, Queen Jetsun Pema of Bhutan claimed the number one spot. According to the experts at Steven Stone, the monarch has the most expensive royal engagement ring, worth around $1.5 million.

The most expensive royal engagement ring belongs to Grace Kelly, the Hollywood actress who became Princess of Monaco. Kelly’s Cartier ring was given to her by Prince Rainier III in 1956.

However, her previous engagement rings, per Town & Country, include a rare pink diamond from Ben Affleck in 2002 valued at over $2.5M and an 8.5-carat green diamond ring, valued at $5M in 2022.

This $500,000 heirloom might not be the most expensive ring on the list, but its sentimental value is worth so much more. Princess Diana also wore this ring while she was engaged to Prince Charles.

Bloom proposed with a floral-inspired engagement ring that experts estimate could be worth up to $5 million, making it one of the most expensive celebrity engagement rings of all time. In honor of ...

The couple’s marriage was short-lived—as Todd died a year later in a plane crash—but Taylor wore the ring for years even though it wasn’t the biggest nor most expensive ring in her ...