The squarish outline and tall crown of a true old mine cut. Antique Old Mine Cut Diamond Ring, 18K gold, 1800s
The short answer: an old mine cut is squarish with rounded corners, cut entirely by hand, and mostly dates from before the 1890s. An old European cut is round, shaped with early machine assistance, and mostly dates from the 1890s to the 1930s. Both have a small table, a high crown and an open culet, which is why they get confused. The outline is the giveaway.
I handle both cuts every month, and I still see them mislabelled in listings from dealers who should know better. Here is how I tell them apart, and why the difference matters for the price you pay.
What is an old mine cut?
An old mine cut is a hand-cut diamond with a cushion-like, squarish outline, a small table, a very tall crown and a large open culet, the flat facet at the bottom that looks like a small window when you look straight down into the stone. Most were cut between the early 1700s and the 1890s.
Every one was shaped by eye and by hand, one facet at a time, so no two are alike. One shoulder is often a little higher than the other, the culet is rarely perfectly centered, and that is exactly the charm. They were cut to perform in candlelight, throwing broad, slow flashes of fire rather than the white glitter of a modern stone.
I wrote a full guide to the cut, since it is the stone my shop is named after: What is an old mine cut diamond?
What is an old European cut?
An old European cut is the round successor to the old mine cut, made possible by the steam-driven bruting machine of the 1870s, which could grind a diamond against another diamond into a genuinely circular outline. It kept the small table, the high crown and the open culet, but the silhouette became round and the facets more even. The cut dominated from roughly the 1890s until the 1930s, when the modern round brilliant took over.
Think of it as the bridge between the handmade era and the modern one: machine-round outline, hand-finished facets, antique light.
The round outline of the later era. Art Deco Diamond Ring, 1.92 ct, platinum, 1930s
How do I tell them apart at a glance?
Look straight down at the outline first, then at the culet. That solves most cases in five seconds.
| Old mine cut | Old European cut | |
|---|---|---|
| Outline | Squarish cushion with rounded corners | Round |
| Main era | Early 1700s to circa 1890 | Circa 1890 to circa 1935 |
| Table | Very small, often under 40% of the width | Small, but usually a little larger |
| Culet | Large and obvious, visible through the table | Open but smaller, a dot rather than a window |
| Symmetry | Charmingly uneven, cut by eye | Noticeably more regular |
| Facets | Typically 58, hand-placed | Typically 58, more evenly placed |
| Light | Broad, slow flashes of fire | More lively, still warm and chunky |
One honest caveat: the transition was gradual, and plenty of stones sit in between. A slightly cushiony round from 1895 can reasonably be called either. Auction houses often sidestep the problem by writing "old cut diamond", and when a stone is genuinely borderline, so do I.
Which era does my ring belong to?
The cut and the mounting usually agree, and together they date a piece well. Old mine cuts belong in Georgian and Victorian jewelry: closed backs, silver-topped gold, repoussé and hand engraving. Old European cuts belong in Edwardian and Art Deco jewelry: platinum, knife-edge bands, geometry. But cutters kept using old mine cuts long after the machines arrived, because recutting a family stone wastes weight. I have sold a 1925 Art Deco ring set with old mine cuts, and it was original.
Older stones in a newer mounting: old mine cuts in a 1925 Art Deco ring. Art Deco Ring, Old Mine Cut Diamonds, 18K white gold, 1925
Is one worth more than the other?
Per carat, comparable stones are usually priced similarly, and both have climbed steadily over the last decade as supply shrinks. In my experience old mine cuts carry a small premium among collectors, simply because they are older and rarer, while old European cuts are easier to sell to someone who wants an antique stone that still reads as a classic round. Neither is priced like a modern brilliant of the same weight: you generally get more carat for your money with an antique cut, and a stone nobody else is wearing.
What actually moves the price is the usual list: carat, color, clarity, and how well the individual stone performs. A lively, well-proportioned old mine cut beats a lifeless old European cut every time, and the reverse is just as true.
Frequently asked questions
Is an old European cut the same as an old mine cut?
No. Both are antique cuts with a small table, high crown and open culet, but the old mine cut is squarish and older, while the old European cut is round and later. The outline tells them apart.
Which came first, the old mine cut or the old European cut?
The old mine cut. It dominated the 1700s and 1800s. The old European cut replaced it from the 1890s once bruting machines could produce a round outline.
Can an old European cut diamond be certified?
Yes. GIA and other laboratories grade antique cuts and will state "old European brilliant" or "old mine brilliant" on the report when the proportions qualify. Expect lower cut grades by modern standards. That is normal and does not make the stone less desirable.
Are old European cut diamonds more expensive than modern brilliants?
Usually the opposite. Antique cuts typically cost less per carat than new brilliants of the same grade, though prices have been rising as more people discover them and the supply only ever shrinks.
What is a transitional cut diamond?
A stone cut between roughly 1930 and 1950, after the old European cut but before the modern round brilliant settled: a smallish table with a closed or nearly closed culet. It is its own little collecting niche.
You can see every diamond piece currently in the shop under rings and earrings, and each listing states the cut, because that is the first thing I would want to know too.
Read next: What is an old mine cut diamond? · The history of the first diamond cuts · How to date antique jewelry
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