Taylor Swift’s engagement ring includes a hidden ’13’ — all about old mine cut diamonds

It seems some of Taylor Swift’s superstitions have rubbed off on Travis Kelce.

The Kansas City Chiefs player proposed to the “Cruel Summer” singer earlier this month with a stunning engagement ring that not only suited her aesthetic, but also paid homage to her love of hidden symbolism.

Page Six Style exclusively reported that Kelce, 35, teamed up with jeweler Kindred Lubeck of Artifex Fine to choose the old mine brilliant-cut diamond, set on a chunky band with custom hand engraving.

While the vintage charm visually matches what one would expect from Swift — and boasts an impressive estimated million-dollar price tag — there are also deeper meanings in the choice of center stone.

First popularized in the 18th and 19th century, no two old mine cut stones are the same. However, according to the Gemological Institute of America, they all feature 58 facets as a hallmark of the cut.

As Swift has been open about her love of numerology and specifically her obsession with the number 13, it should come as no surprise that five plus eight equals her lucky number.

Whether Kelce or Lubeck were aware of this fact has not been confirmed, but when it comes to the Swiftian universe, there’s a lyric for this: “none of it was accidental.”

The Grammy winner’s commitment to the number is so serious that she made her debut on Kelce’s “New Heights” podcast — and announced her forthcoming album, “The Life of a Showgirl” — on an episode that aired on Aug. 13.

The couple shared the proposal news and photos in a joint Instagram post 13 days later, on Aug. 26 (13 plus 13 equals 26). The date also landed 39 days before her album’s Oct. 3 release — 13 times three.

They pointed out on the episode that Kelce’s jersey number, 87, plus 13 equals 100, making him and Swift the perfect match. What’s more? Kelce is about to begin his 13th year in the NFL.

There’s more than meets the eye when it comes to the dreamy cut, too.

“Old mine cut diamonds have a uniquely romantic charm that sets them apart from modern stones. Their broader facets, open culets and slightly asymmetrical shapes create a softer, more soulful glow, less about precision brilliance and more about character,” jeweler Briony Raymond tells Page Six Style.

“These diamonds were cut entirely by hand, often over a century ago, using rudimentary tools and guided by the artisan’s eye rather than exact measurements. That history is palpable; when you look into one of these stones, you’re seeing the fingerprints of the past.”

And Raymond hypothesizes why Swift and others might choose the vintage style rather than a more modern look.

“In recent years, there’s been a growing appreciation for that authenticity and individuality as clients are drawn to pieces that feel storied and personal,” she says. “Each old mine cut diamond is one of a kind, and in a world of mass production, that sense of timelessness and rarity feels more meaningful than ever.”

To be sure, Swift’s bling is likely to set off a renewed interest in the storied stone — and data already shows that she’s sent searches soaring.

“Searches for old mine cuts have risen by almost 10,000% overnight. It’s now the most searched-for diamond cut this month, with more than 170% more interest than the second most popular cut (cushion), and 427% more than the third (emerald),” Laura Taylor of Lorel Diamonds told us.

We imagine fans should save the date for the 13th of whatever month Taylor and Travis choose to wed.