Georgina Rodríguez, the partner of football star Cristiano Ronaldo, recently flashed her mega diamond engagement ring, setting social media abuzz and prompting discussions among jewelry experts about its worth. The ring features a massive elongated oval diamond, estimated to be over 30 carats, with flawless clarity and a D-F color range. It is set with double-claw prongs in a platinum band and flanked by two smaller oval stones, each believed to be around one carat. Experts estimate the ring's value between $2 million and $5 million.

Rodríguez's ring reflects a growing trend of extravagant celebrity engagement rings. Here's a look at some of the most expensive engagement rings of all time:

• Grace Kelly: Prince Rainier III of Monaco initially proposed with a ring featuring diamonds and rubies from Monaco's crown jewels. He later commissioned Cartier to create a 10.48-carat emerald-cut diamond ring, flanked by baguette-cut diamonds. Today, this ring is estimated to be worth $45 million.
• Jacqueline Kennedy Onassis: Aristotle Onassis gifted Jackie Kennedy a 40.42-carat Harry Winston diamond, known as the Lesotho III, which was the third-largest gem cut from the 601-carat Lesotho rough diamond. The ring was sold for $2.6 million at auction in 1996.
• Mariah Carey: During her engagement to James Packer, Mariah Carey received a 35-carat emerald-cut diamond ring estimated at $10 million. Despite the couple's split, Carey kept the ring for a time, eventually selling it for $2.1 million.
• Elizabeth Taylor: Elizabeth Taylor was known for her impressive jewelry collection, including a 33.19-carat Asscher-cut diamond ring from Richard Burton. The Krupp diamond fetched over $8.8 million at auction in 2011.
• Kim Kardashian: Kanye West gifted Kim Kardashian not one, but two extravagant engagement rings. The second ring, a 20-carat diamond designed by Lorraine Schwartz, was valued at $8.5 million. Unfortunately, this ring was stolen in Paris.
• Beyoncé: Jay-Z presented Beyoncé with an 18-carat emerald-cut diamond ring designed by Lorraine Schwartz, estimated to be worth $5 million.
• Paris Hilton: Paris Hilton has received several notable engagement rings, including a 24-carat emerald-cut diamond ring valued at $4.7 million from Paris Latsis. She also kept a 20-carat pear-cut stone from actor Chris Zylka following their split.
• Lauren Sánchez: Jeff Bezos proposed to Lauren Sánchez with a cushion-cut pink diamond, estimated to be around 30 carats. Experts estimate the ring's value between $3 million and $5 million.
• Serena Williams: Alexis Ohanian, co-founder of Reddit, gave Serena Williams an oval-cut white diamond ring estimated to be worth $3 million. The centerpiece stone clocks in at 17 carats and is flanked by two additional stones.

These extravagant rings showcase the trend of celebrities opting for larger-than-life symbols of their love. While the average person may not be able to afford such extravagant pieces, lab-grown diamonds and moissanite offer more affordable alternatives to achieve a similar look.