The old mine-cut, which dates back to the 18th century, makes the ring unique. Also, given its size, it makes it expensive.

“Old mine cuts are highly sought after currently, especially among collectors and vintage enthusiasts,” Snowdon said. “This diamond’s large size (probably between 8 – 10 carats) increases its value significantly. Assuming top clarity and color, the piece could easily be valued from £500,000 to £1 million.”

Snowdon noted that when all these details come together, the ring feels perfect for Swift.

“The ring feels like a perfect reflection of Taylor herself,” she said. “The ring captures both sides of her: the girl who treasures love letters and vintage details, and the superstar living an epic love story. In that sense, it’s a symbol that her wedding will carry the weight and spectacle of a modern-day royal affair.”

Though the ring is very large, Snowdon said it likely isn’t burdensome to wear.

“Despite their size, old mine cuts distribute weight differently thanks to their deeper pavilions,” she explained. “They sit lower on the finger than modern brilliants of similar carat, meaning they appear enormous without feeling cumbersome. For someone like Taylor, accustomed to stage jewelry and couture, the ring is likely both comfortable and striking.”

Taylor Swift’s engagement ring could set new trends

Though Swift’s ring feels unique to her, it could spark a new movement. Nilesh Rakholia, a jewelry expert and founder of Abelini, said more people will seek out rings that feel authentic to themselves, even if they don’t follow trends. 

“For couples considering their own engagement rings, Swift’s choice offers a valuable lesson,” he explained. “The most meaningful pieces are those that genuinely reflect who you are as a couple, crafted by artisans who understand that they’re creating not just jewellery, but the physical embodiment of a life-changing moment.”

He noted that this is part of a larger “movement toward authenticity.”

Travis Kelce spoke about what he wants in a marriage

Swift’s “deeply romantic” ring reflects the type of marriage Kelce said he hopes to have. His parents divorced when he was in college, and he recalled their relationship being more about their kids than romance. He said he wants something different for himself.