Few things drive engagement ring searches like a high-profile celebrity proposal and Taylor Swift is about as high-profile as it gets. Whether you're here because you love the ring, love the story, or are simply looking for inspiration for your own, this post breaks down what makes her ring so distinctive and why the cut at the center of it is one of the most interesting choices in contemporary fine jewelry.
What we know about Taylor Swift's engagement ring
Taylor Swift has been seen wearing what appears to be an old mine cut diamond or a closely related elongated antique cushion cut, a choice that signals a genuinely deep knowledge of jewelry history. This is not a stone you stumble into. Old mine cuts are antique diamonds, cut by hand long before modern precision machinery existed, and they look entirely different from anything you'd find in a conventional jewelry store today.
For someone whose entire public persona is steeped in romanticism, nostalgia, and historical reference, an old mine cut diamond is a remarkably fitting choice. It's the kind of ring that tells you something about the person wearing it.
What is an old mine cut diamond?
The old mine cut is the dominant diamond cutting style of the 18th and 19th centuries, predating the modern round brilliant by well over a hundred years. These diamonds were cut entirely by hand, guided by candlelight and the cutter's eye rather than by machines or mathematical precision. The result is a stone with a character that simply cannot be replicated by modern cutting technology - and that's exactly the point.
Old mine cuts are typically cushion-shaped (square with softly rounded corners), with a high crown, a small table, a large culet (the flat facet at the bottom of the stone, which appears as a circle when you look straight down), and fewer, larger facets than a modern brilliant. They don't throw the sharp, uniform sparkle of a contemporary diamond. Instead, they glow - a soft, warm, candlelit light that shifts slowly as the stone moves and looks particularly spectacular in low or incandescent lighting.
Old mine cut vs. elongated antique cushion cut
The elongated antique cushion is a closely related variation, still hand-cut in the antique tradition, but with a more rectangular or oval outline rather than the squarish shape of the classic old mine. Where the traditional old mine cut reads as soft and rounded, the elongated version adds finger presence and length, sharing some of the elongating quality of a modern oval without any of the modern faceting.
Both cuts fall under the broader umbrella of antique diamonds, and both share the same essential character: larger facets, a high crown, and that distinctive warm glow that sets them apart from anything cut in the last century.
Why antique cut diamonds are having a moment
Old mine cuts and antique cushions have been quietly gaining ground with jewelry collectors and informed buyers for years, and the reasons are easy to understand once you've seen one in person.
First, they're genuinely one of a kind. Every old mine cut diamond is slightly different, shaped by the individual hand that cut it. There is no modern factory producing new old mine cuts. The stones that exist are the stones that exist, which gives them an irreproducibility that modern diamonds simply don't have.
Second, they suit a wide range of settings beautifully. The cushion shape works in everything from a simple solitaire to an elaborate Victorian-inspired design with milgrain edges, rose gold, and detailed metalwork. The antique character of the stone and the setting reinforce each other in a way that feels cohesive rather than costume-y.
Third, they often represent strong value. Old mine cuts are less in demand than modern rounds and ovals among mainstream buyers, which means you can frequently acquire a larger or more characterful stone for the same budget.
What to know before buying an antique cut diamond
Grading is different
Modern diamond grading systems - the 4Cs - were developed for modern brilliant cuts. Applying them directly to old mine cuts doesn't always tell the full story, because the way these stones handle color and clarity is different. A stone that grades as J color might face up beautifully warm and rich in an old mine cut in a way that would look noticeably yellow in a modern round. Seeing the stone in person matters more with antique cuts than with any other shape.
The culet
The large open culet at the base of an old mine cut is visible as a dark circle at the center of the stone when viewed face-up. On some stones this is barely noticeable; on others it's more prominent. It's part of the antique character of the diamond - not a defect - but it's worth understanding before you fall in love with a stone and then notice it for the first time.
Sourcing
Old mine cuts are found in antique and estate jewelry, and through specialty dealers who source and sell individual antique stones. They require a jeweler who understands how to work with them - setting an irregularly shaped antique stone is different from setting a perfectly calibrated modern diamond.
Designing an antique cut ring at acredo
At acredo rings in Denver, antique and old mine cut diamonds are a natural fit for the custom design process. The irregularity and individuality of each stone means the setting needs to be designed around that specific diamond - which is exactly what a custom consultation is built for. Whether you want a simple solitaire that lets the stone speak entirely for itself, or a more elaborate vintage-inspired setting that honors the diamond's history, the process starts with finding the right stone and building from there.
If you're drawn to the warmth and romance of an antique cut diamond and want to see what's possible, consultations are available by appointment.