Old Mine Cut Diamonds: What They Are and Why They’re Special
by Manish on Jul 24 2025
When you look through antique or vintage wedding rings, it is possible that you might come across an incredibly romantic as well as historical diamond design, such as that of the older mine-cut diamond. The distinctive shape and hand-cut facets of this cut diamond date to the early 1800s and are still an absolute favourite among vintage collectors, jewelry enthusiasts, as well as those who are looking for an original, timeless engagement ring.
However, what exactly is a cut diamond and what makes it special? Let's look at the story of the diamond, its characteristics, and the enduring beauty associated with an old mine-cut diamond--and the reasons why it could be the ideal choice to create your own heirloom-worthy piece.
An old mine-cut diamond is one of the earliest forms of the brilliant cut, crafted by hand between the 18th and late 19th centuries. These diamonds feature a squarish outline with softly rounded corners, giving them a cushion-like appearance. While they may resemble today’s cushion-cut diamonds, old mine cuts have distinct characteristics that set them apart.
Cut entirely by hand and without the aid of modern tools or symmetry grading, each old mine-cut diamond is truly one of a kind. Unlike today’s standardized diamond shapes, these stones were shaped by eye to reflect light in candlelit rooms. As a result, their sparkle is softer and more romantic rather than bright and brilliant.
Common characteristics that are typical of an old cut from a mine include:
One of the most effective ways to spot the antique mine-cut diamond is to look for the visible circle in the middle of the table. This is due to a large culet, a feature on the bottom edge of the diamond which lets light be able to pass through, creating an unlit spot when seen from above. Modern cut diamonds typically do not have large culets to maximise the brilliance of the diamond; however, this feature is a signature aspect of the old mine cut's beauty.
You might be asking yourself: What is a mine-cut diamond? What is it, and why did it get its name?
The term “old mine cut” originally referred to diamonds mined from the older diamond sources in Brazil and India before diamonds were discovered in Africa. In the 18th and 19th centuries, Brazilian and Indian mines were the main source of diamonds around the world. The production of diamonds shifted to African mines by the end of the 1800s; earlier diamonds were called "old mine" diamonds.
Incredibly, the term developed to encompass not only the source but also the cut style. Even diamonds sourced from more modern African mines remained cut in the same way as old mine diamonds. The term "old mine cut" mostly refers to the design and style of the diamond, not its geographic source.
The vintage mine-cut diamond is in contrast to modern diamond cuts, such as the round brillian,t that is precisely cut to ensure maximum light return. Let's examine the cut of the old mine to two other cuts that are well-known:
It is believed that the original European cut was a follow-up to the mine cut that was made in the 19th century and early 20th century. Although both were made by hand and designed to be used in candlelight, the original European cut is a round form, and has smaller dimensions and more symmetry than the square vintage mine cut. Each is considered an antique and is adored by those who love vintage jewelry.
The contemporary brilliant cut diamond, which includes round brilliant diamonds and cushion cut, is engineered to provide maximum sparkle in all lighting conditions. They typically come with smaller culets or none at all, as well as more precise facet arrangement. Although modern cut diamonds offer stunning brilliance, they usually lack the unique character and beauty of the vintage mine-cut diamond.
If you're looking for a subtle shimmer, soft edges, and a unique style, then an antique mine cut could be the ideal option for your ring or design.
Because they are no longer produced, old mine-cut diamonds are considered rare. Their value depends on several factors, including the 4 Cs—cut, colour, clarity, and carat weight—just like modern diamonds. However, it’s important to understand that many old mine diamonds may not meet today’s strict grading standards, especially in terms of cut.
Still, there are collectors and vintage jewelry lovers who value old mine-cut diamonds precisely for their imperfections and uniqueness. These stones offer a window into history and craftsmanship rarely seen in today’s machine-cut gems.
A few things that can affect the value of an old mine-cut diamond:
If you already own an old mine diamond or are considering purchasing one, the best way to assess its worth is through a professional appraisal.
There are many reasons why people are attracted to old mine-cut diamonds:
If you're drawn by designs that are romantic, artistic and timeless, then you might like an antique mine-cut diamond could be the ideal central stone for your engagement ring or personalized jewellery piece.
At Nature Sparkle, we celebrate the timeless appeal of vintage diamonds. Whether you’re seeking a true antique or a newly crafted piece inspired by the old mine cut, we’re here to help. Our team creates custom designs that pay homage to their romantic history.
Discover your Old Mine Cut Diamond.
However, what exactly is a cut diamond and what makes it special? Let's look at the story of the diamond, its characteristics, and the enduring beauty associated with an old mine-cut diamond--and the reasons why it could be the ideal choice to create your own heirloom-worthy piece.
What Is an Old Mine Cut Diamond?
An old mine-cut diamond is one of the earliest forms of the brilliant cut, crafted by hand between the 18th and late 19th centuries. These diamonds feature a squarish outline with softly rounded corners, giving them a cushion-like appearance. While they may resemble today’s cushion-cut diamonds, old mine cuts have distinct characteristics that set them apart.
Cut entirely by hand and without the aid of modern tools or symmetry grading, each old mine-cut diamond is truly one of a kind. Unlike today’s standardized diamond shapes, these stones were shaped by eye to reflect light in candlelit rooms. As a result, their sparkle is softer and more romantic rather than bright and brilliant.
Common characteristics that are typical of an old cut from a mine include:
- A high crown
- Tables of a smaller size (the side with the flattened top)
- Deep pavilion (the lower part of the rock)
- Large, open culet
- 58 chunky, uneven facets
One of the most effective ways to spot the antique mine-cut diamond is to look for the visible circle in the middle of the table. This is due to a large culet, a feature on the bottom edge of the diamond which lets light be able to pass through, creating an unlit spot when seen from above. Modern cut diamonds typically do not have large culets to maximise the brilliance of the diamond; however, this feature is a signature aspect of the old mine cut's beauty.
Where Did the Name "Old Mine Cut" Come From?
You might be asking yourself: What is a mine-cut diamond? What is it, and why did it get its name?
The term “old mine cut” originally referred to diamonds mined from the older diamond sources in Brazil and India before diamonds were discovered in Africa. In the 18th and 19th centuries, Brazilian and Indian mines were the main source of diamonds around the world. The production of diamonds shifted to African mines by the end of the 1800s; earlier diamonds were called "old mine" diamonds.
Incredibly, the term developed to encompass not only the source but also the cut style. Even diamonds sourced from more modern African mines remained cut in the same way as old mine diamonds. The term "old mine cut" mostly refers to the design and style of the diamond, not its geographic source.
Old Mine Cut vs. Modern Cuts
The vintage mine-cut diamond is in contrast to modern diamond cuts, such as the round brillian,t that is precisely cut to ensure maximum light return. Let's examine the cut of the old mine to two other cuts that are well-known:
The Old Mine Cut vs. Old European Cut
It is believed that the original European cut was a follow-up to the mine cut that was made in the 19th century and early 20th century. Although both were made by hand and designed to be used in candlelight, the original European cut is a round form, and has smaller dimensions and more symmetry than the square vintage mine cut. Each is considered an antique and is adored by those who love vintage jewelry.
Old Mine Cut vs. Modern Brilliant Cut
The contemporary brilliant cut diamond, which includes round brilliant diamonds and cushion cut, is engineered to provide maximum sparkle in all lighting conditions. They typically come with smaller culets or none at all, as well as more precise facet arrangement. Although modern cut diamonds offer stunning brilliance, they usually lack the unique character and beauty of the vintage mine-cut diamond.
If you're looking for a subtle shimmer, soft edges, and a unique style, then an antique mine cut could be the ideal option for your ring or design.
Are Old Mine-Cut Diamonds Valuable?
Because they are no longer produced, old mine-cut diamonds are considered rare. Their value depends on several factors, including the 4 Cs—cut, colour, clarity, and carat weight—just like modern diamonds. However, it’s important to understand that many old mine diamonds may not meet today’s strict grading standards, especially in terms of cut.
Still, there are collectors and vintage jewelry lovers who value old mine-cut diamonds precisely for their imperfections and uniqueness. These stones offer a window into history and craftsmanship rarely seen in today’s machine-cut gems.
A few things that can affect the value of an old mine-cut diamond:
- Rarity: Because they are no longer being cut this way, they’re increasingly hard to find.
- Craftsmanship: Hand-cut diamonds show the artisan’s touch, which adds emotional and collectable value.
- Size and quality: Larger old mine diamonds with better colour and clarity can command high prices.
If you already own an old mine diamond or are considering purchasing one, the best way to assess its worth is through a professional appraisal.
Why Choose an Old Mine Cut Diamond?
There are many reasons why people are attracted to old mine-cut diamonds:
- Vintage and romantic appeal: The soft, warm shine and historical roots bring a feeling of nostalgia and timelessness.
- Uniqueness: No two are identical. Because they were cut by hand, each older mine was cut in a unique shape and character.
- Sustainability: The choice of a vintage diamond or repurposing it to create a new setting is an eco-friendly alternative.
- Symbolism: Many people love the significance of these stones, which symbolise the love of a lifetime that has lasted through generations.
If you're drawn by designs that are romantic, artistic and timeless, then you might like an antique mine-cut diamond could be the ideal central stone for your engagement ring or personalized jewellery piece.
Interested in Finding One?
At Nature Sparkle, we celebrate the timeless appeal of vintage diamonds. Whether you’re seeking a true antique or a newly crafted piece inspired by the old mine cut, we’re here to help. Our team creates custom designs that pay homage to their romantic history.
Discover your Old Mine Cut Diamond.
