Antique Diamonds

OLD MINE CUTS, OLD EUROPEAN CUTS, AND THE HISTORY OF THE ROUND BRILLIANT DIAMOND

"Diamond washing" in India, photo credit: GIA.edu — *"Diamond washing" in India, photo credit:* *GIA.edu*

TREASURED THROUGHOUT HISTORY

The earliest evidence of diamonds used in jewelry can be sourced to the 1200s, when diamonds were cut into smaller pieces and rubbed against each other to create a soft polish. Facets—the flat, polished surfaces that reflect light—didn’t appear until the 1500s in Europe, with simple early cuts like the table cut and point cut.

Trade routes between Europe and Asia introduced Europeans to diamonds being cut and polished in India. By the 1700s, European gem cutters were developing their own methods to shape diamonds not just for durability, but to increase their light and sparkle.

THE OLD MINE CUT

Old Mine Cut diamond, photo credit, GIA.edu — *Old Mine Cut diamond, photo credit,* *GIA.edu*

The old mine cut was introduced in the mid‑1700s and became one of the first industry‑standard brilliant cuts. Rather than being perfectly round, old mine cut diamonds typically have a soft, squarish cushion shape with rounded corners.

These diamonds were hand‑cut, often with the goal of preserving as much carat weight as possible. That’s why many old mine stones show subtle asymmetries in their outline—they follow the shape of the natural crystal rather than conforming to modern, computer‑modeled proportions.

Because they were cut by hand, no two genuine antique old mine diamonds are exactly alike—each carries its own character and history. That's part of their charm!

THE OLD EUROPEAN CUT

Old European Cut diamond solitaire, Photo Credit, gemsociety.org — *Old European Cut diamond solitaire, Photo Credit,* *gemsociety.org*

By the mid‑1800s, advances in tools and understanding of optics allowed cutters to refine diamond proportions further. The old European cut began to eclipse the old mine cut as an industry standard, though both remained popular through the early to mid‑1900s.

Old European cuts mark the transition from softly squared antique stones to truly round diamonds. They are still hand‑cut, but with more symmetry and consistency than earlier old mine cuts.

FROM ANTIQUE CUTS TO THE MODERN ROUND BRILLIANT

A custom, art deco style diamond ring with a bold and bright modern brilliant cut at its center.

As diamond cutting tools and mathematical models improved through the late 19th and early 20th centuries, cutters were able to calculate angles and facet proportions that maximize brightness. This led to the modern round brilliant cut—today’s most common engagement diamond style.

In contrast, antique cuts prioritize a different kind of beauty. Old mine and old European diamonds were designed to sparkle in candlelight and other low-light settings, creating softer and broader flashes of color rather than continuous bright glittering. Many clients describe this as a more soulful or romantic kind of sparkle.

HOW TO TELL OLD MINE, OLD EUROPEAN, AND MODERN ROUND BRILLIANT CUTS APART

If you’re wondering what kind of diamond you have—or which you’re drawn to most—here are a few quick visual cues:

Old Mine Cut

Squarish cushion outline with rounded corners.
High crown, deep pavillion, small table, and a large open "culet"—the facet at the very bottom of a diamond's point—often visible from the top.
Larger, chunky facets made to glow in candlelight, creating bigger flashes of rainbow color (fire) rather than purely bright, white, glittery brilliance.

Old European Cut

Round outline with a slightly higher crown than modern stones.
Small table and a smaller culet than an old mine cut, but still sometimes visible.
Larger facets than modern cuts with a balanced, vintage glow—bridging the romantic, candlelight sparkle of Old Mine diamonds and the brighter brilliance of modern rounds.

Modern Round Brilliant

Perfectly round shape and highly standardized proportions.
No visible culet from the top; pointed pavilion.
Lots of small, carefully arranged facets that optimize brilliance and sparkle in everyday (and electric) light.

WHY ANTIQUE DIAMONDS ARE SO SPECIAL

Treasures of times long gone, antique diamonds will never again be cut and shaped exactly the way they were in earlier centuries. Many were recut into modern shapes over the last hundred years, making surviving Old Mine and Old European stones increasingly rare.

Their irregular outlines, visible culets, and hand‑cut facets are signatures of human artistry—which is part of why they’re having such a resurgence in engagement rings today. From Taylor Swift’s old mine cut ring to the rising demand for vintage‑inspired bridal styles, couples are embracing antique proportions as a way to express individuality and a love of vintage style.

RESETTING HEIRLOOM AND ANTIQUE DIAMONDS

Resetting your heirloom and antique diamonds allows you to both enjoy them now and pass them on for generations to come. At InBloom, we love designing settings that honor the unique personality of old mine, old European, and modern diamonds—rather than forcing them into shapes and styles that don’t always fit.

If you’re curious about what kind of diamond you have—or how it might shine in a brand new design—stop by our gallery or schedule a design consultation. We’ll examine your stone, talk through its history and proportions, and help you design the piece you’ve always dreamt of—one that tells your story beautifully every day you wear it.