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Diamond Ring Platinum Band Vintage Estate 1.40 TDW Old Mine
By Estate Jewelry
Located in East Brunswick, NJ
guaranteed) and set with old mine cut diamonds. The center diamond is .50 carat, two gems are .30 carat each
Category

Mid-20th Century Band Rings

Materials

Diamond, Platinum

ART DECO Miner Mine cut Diamond 18K White Gold Platinum Ring Estate Antique
By Estate Jewelry
Located in Brambleton, US
ART DECO Miner Mine Diamond 18K Gold Platinum Ring Estate This is an exquisite piece of Deco
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Platinum, White Gold

Edwardian Old Mine Diamond Ring 2.06 cttw Platinum
By Estate Jewelry
Located in East Brunswick, NJ
Edwardian Old Mine Diamond Ring 2.06 cttw Platinum This gorgeous antique from Edwardian era ring
Category

Early 20th Century Cocktail Rings

Materials

Diamond, Platinum

Natural Old Mine Diamond Ring 14K Gold
By Estate Jewelry
Located in East Brunswick, NJ
natural old mine cut Diamonds are very clean VS2 clarity and H color totaling .50 carat. The top of the
Category

Mid-20th Century Cluster Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Old Mine Diamond Ring Platinum 2.05 TDW Vintage Engagement
By Estate Jewelry
Located in East Brunswick, NJ
This vintage ring is made in luxurious Platinum. The center old mine cut diamond is 1.45 carat of
Category

Vintage 1950s Engagement Rings

Materials

Diamond, Platinum

Old Mine Diamond Sapphire Ring 14K White Gold Vintage
By Estate Jewelry
Located in East Brunswick, NJ
Old Mine Diamond Sapphire Ring 14K White Gold Vintage This vintage ring is crafted in solid 14K
Category

Vintage 1960s Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Edwardian Old Mine Diamond Wishbone Brooch Pin Pendant 14K Gold
By Estate Jewelry
Located in East Brunswick, NJ
Edwardian Old Mine Diamond Wishbone Brooch Pin Pendant 14K Gold This gorgeous Edwardian circa 1890
Category

Early 20th Century Brooches

Materials

Diamond, 14k Gold, Yellow Gold, Platinum

Edwardian Old Mine Diamond Horseshoe Brooch Pin 18k Gold & Platinum
By Estate Jewelry
Located in East Brunswick, NJ
Old Mine Diamond Horseshoe Brooch Pin 18K Gold Platinum Edwardian This gorgeous Edwardian circa
Category

Antique Early 1900s Edwardian Brooches

Materials

Diamond, 18k Gold, Platinum

Wilson's Bespoke 10.18 CT Old Mine Butter Diamond Platinum Engagement Ring GIA
By Estate Jewelry
Located in Philadelphia, PA
Centering an old mine cut diamond weighing 10.18 carats - W to X color with VS1 clarity Set with
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Diamond Ruby Ring 20K Gold Vintage Estate Vintage
By Estate Jewelry
Located in East Brunswick, NJ
Diamond Ruby Ring 20K Gold Vintage Estate Vintage This amazing vintage ring is finely crafted in
Category

Late 20th Century Band Rings

Materials

Diamond, Ruby, Gold

Old Mine Diamond Ring 14K White Gold Vintage 1.55 TDW
By Estate Jewelry
Located in East Brunswick, NJ
This vintage ring is made in solid 14K White Gold. Three center old mine cut diamonds total 1.20 of
Category

Vintage 1960s Cluster Rings

Materials

Diamond, 14k Gold, White Gold

Mens Diamond Ring 14K Gold Band Old Mine .93TDW Vintage
By Estate Jewelry
Located in East Brunswick, NJ
Gold for the top and set with white and fiery Old mine cut diamonds. Nine diamonds (.25 center) are
Category

20th Century Cluster Rings

Materials

Diamond, 14k Gold, Yellow Gold

Mens Diamond Ring 14K Gold Band .75ct Old Mine Solitaire Vintage
By Estate Jewelry
Located in East Brunswick, NJ
Mens Diamond Ring 14K Gold Band .75ct Old Mine Solitaire Vintage This amazing vintage ring is
Category

Mid-20th Century Band Rings

Materials

Diamond, 14k Gold, Yellow Gold

Diamond Ring Old Mine 14k White Gold Flower Vintage Cluster
By Estate Jewelry
Located in East Brunswick, NJ
and guaranteed). The center old mine cut diamond is .45 carat of VS2 clarity and J color. It is
Category

Mid-20th Century Cocktail Rings

Materials

Diamond, 14k Gold, White Gold

Old Mine Diamond Ring 14K White Gold Band 1.63 TDW Engagement
By Estate Jewelry
Located in East Brunswick, NJ
This stunning estate ring is finely crafted in solid 14K White gold and set with an old mine cut
Category

20th Century Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Old Mine Diamond Ring 14K White Gold Art Deco .82 TDW
By Estate Jewelry
Located in East Brunswick, NJ
Old Mine Diamond Ring 14K White Gold Art Deco .82 TDW This vintage circa 1930s ring is crafted in
Category

Vintage 1930s Art Deco Bridal Rings

Materials

Diamond, 14k Gold, White Gold

Tahitian Pearl Old Mine cut Diamond Earrings 14K White Gold Art Deco
By Estate Jewelry
Located in East Brunswick, NJ
Tahitian Pearl Old Mine cut Diamond Earrings 14K White Gold Art Deco This absolutely stunning pair
Category

Mid-20th Century Art Deco Drop Earrings

Materials

Diamond, Pearl, 14k Gold, White Gold

Diamond Sapphire Ring Cluster Vinatge 18K White Gold Estate
By Estate Jewelry
Located in East Brunswick, NJ
Diamond Sapphire Ring Cluster Vinatge 18K White Gold Estate This vintage ring is finely crafted in
Category

Vintage 1960s Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Old mine Diamond Ring 14K White Gold Art Deco 1.30 TDW
By Estate Jewelry
Located in East Brunswick, NJ
). Three old mine cut diamonds total 1.30 carats; the center diamond is .50 carat and two diamonds are .40
Category

Early 20th Century Art Deco Three-Stone Rings

Materials

Diamond, 14k Gold, White Gold

Diamond Ruby Ring 14K Rose Gold Spiral Cocktail Retro Old Mine cut
By Estate Jewelry
Located in East Brunswick, NJ
Diamond Ruby Ring 14K Rose Gold Spiral Cocktail Retro Old Mine cut This vintage ring circa the
Category

Mid-20th Century Art Deco Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold

Fancy Yellow & White Diamond Ring 14K Gold Platinum 1.28 TDW Old Mine Toi et Moi
By Estate Jewelry
Located in East Brunswick, NJ
Fancy Yellow & White Diamond Ring 14K Gold Platinum 1.28 TDW Old Mine Toi et Moi This gorgeous
Category

Early 20th Century Edwardian Wedding Rings

Materials

White Diamond, Yellow Diamond, 14k Gold, Platinum

VintageDiamond Ring 14K Rose Gold Spiral 1.05 TDW Old Mine
By Estate Jewelry
Located in East Brunswick, NJ
Vintage Diamond Ring 14K Rose Gold Spiral 1.05 TDW Old Mine This absolutely stunning unusual ring
Category

Vintage 1950s Cluster Rings

Materials

Diamond, 14k Gold, Rose Gold

Vintage Round and Old mine Diamond Pendant Necklace 14K White Gold
By Estate Jewelry
Located in East Brunswick, NJ
Vintage Round and Old mine Diamond Pendant Necklace 14K White Gold This incredible highly
Category

Early 20th Century Choker Necklaces

Materials

Diamond, 14k Gold, White Gold

Estate 18k Yellow Gold Teardrop Shaped Old Mine Diamond Stud Earrings
Located in Miami, FL
Purity: 18k Stones: 16 Old Mine European Diamonds Total Item Weight (grams): 2.6 g Earring Length: 10.28
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Antique Old Mine Diamond Emerald Sapphire Dome Engagement Ring
By Belrose Estate Jewelers
Located in Santa Barbara, CA
upon an antique, old mine cut diamond near 1 carat (0.92) with an EGL Laboratory Report stated as
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Emerald, Sapphire, Platinum

Estate Edwardian 14K Gold .70cttw Old Mine Diamond Ring - VHK#969
Located in Hicksville, NY
Estate Edwardian 14K Gold .70cttw Old Mine Diamond Ring - VHK#969 Item Details: Year: 1900s Ring
Category

Antique Early 1900s Edwardian Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold, Yellow Gold

Platinum 1.21 carat Old Mine Cut Diamond GIA Certified Estate Engagement Ring
Located in Philadelphia, PA
This platinum ring showcases an old mine cut diamond in a low, bezel-like setting, flanked by
Category

Early 20th Century Bridal Rings

Materials

Diamond, Platinum

Estate Victorian Yellow Gold Lion Brooch with Old Mine Diamonds - VHK#972
Located in Hicksville, NY
Estate Victorian Yellow Gold Lion Brooch with Old Mine Diamonds - VHK#972 Item Details: Metal Type
Category

20th Century Victorian Brooches

Materials

Diamond, Gold, 10k Gold, Yellow Gold

Vintage Enamel Flower Ring Mine Diamond 14k Yellow Gold Sz 4.75 Estate Jewelry
Located in Torrance, CA
yellow gold. Old mine cut diamond is estimated at 0.10 carats (estimated at I-J color and SI2 clarity
Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

White Diamond, Diamond, Enamel, Yellow Gold, 14k Gold, Gold

14K Yellow Gold Old Mine Round Cut 0.68 Carat GIA Estate Ring
Located in San Francisco, CA
This unique 14k yellow gold estate ring features six (6) round-shape diamonds is approximately 0.83
Category

20th Century American Cocktail Rings

Materials

Diamond, 14k Gold, Yellow Gold

Blue Sapphire Estate Bracelet w Earth Mined Diamonds in Solid 18K White Gold
Located in Columbus, OH
This beautiful estate bracelet features 17 Blue Sapphire gemstones with natural earth mined
Category

2010s American Modern Link Bracelets

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White Gold

Antique Diamond Brooch Floral Pendant 14K Gold 2.47 TDW
By Estate Jewelry
Located in East Brunswick, NJ
(carefully tested and guaranteed). Four bigger Old mine cut diamonds total 1.27 carats of white and clean VS2
Category

Antique Early 1900s Edwardian Brooches

Materials

Diamond, 14k Gold

Art Deco Sapphire Old European Diamond Filigree Ring Platinum Antique
By Estate Jewelry
Located in Brambleton, US
Art Deco Sapphire Old European Diamond Filigree Ring Platinum Antique This is an exquisite
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

5.2ct Sphene Estate Ring w Earth Mined Diamonds in Solid 14K Gold Round 10mm
Located in Columbus, OH
Sphene gemstone with a halo of natural earth mined diamonds set in solid 14K gold. Specifications Item
Category

2010s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Gold, 14k Gold, White Gold

2.9ct Demantoid Estate Ring w Earth Mined Diamonds in Solid 14K Gold CU 9x7.4
Located in Columbus, OH
cushion cut Demantoid gemstone with natural earth mined diamonds set in solid 14K gold. Specifications
Category

2010s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Garnet, Gold, 14k Gold, Yellow Gold

Mark Broumand 10.35 Carat Old European & Old Mine Diamond Estate Dangle Earrings
By Mark Broumand
Located in Los Angeles, CA
These gorgeous estate diamond dangle earrings features two superb old European cut diamonds with a
Category

Vintage 1920s Dangle Earrings

Estate Art Deco Old Mine & European Cut Ruby & Diamond Pave Set Platinum Ring 6
Located in Miami, FL
Estate Art Deco Old Mine & European Cut Ruby & Diamond Pave Set Platinum Ring This previously
Category

Vintage 1930s Art Deco Fashion Rings

Materials

Diamond, Ruby, Platinum

Victorian Diamond Bracelet 14K Gold Bangle Antique 2.49 TDW
By Estate Jewelry
Located in East Brunswick, NJ
studded with genuine Old mine cut diamonds. The diamonds vary in size and color/clarity. There are 55
Category

Antique 1890s Bangles

Materials

Diamond, 14k Gold, Yellow Gold

1930s Portuguese Old Mine Cut Diamond Ring Size 13.5
Located in Los Angeles, CA
1930s Portuguese Old Mine Cut Diamond Cluster Yellow Gold and Silver Ring, size 13.5. The
Category

Vintage 1930s Art Nouveau Cluster Rings

Materials

Diamond

Dancing Angel Cherubs Silver and Gold Diamond Brooch Pin Estate Fine Jewelry
Located in Montreal, QC
Angel Cherubs Dancing around a Wreath and Ribbon. Silver surround Hand set with 20 old Mine-cut Diamonds
Category

Antique Late 19th Century Victorian Brooches

Materials

Diamond, Gold, Silver

Art Deco Diamond Ring Flower Vintage Platinum 2.00 TDW Engagement
By Estate Jewelry
Located in East Brunswick, NJ
. The center Old Mine cut Diamond is 1.20 carat of VS2 clarity and J color. Two smaller bezel-set old
Category

Mid-20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco Diamond Ring 14K Gold Geometric Vintage 1.58 TDW
By Estate Jewelry
Located in East Brunswick, NJ
ornate and millgrained top of the ring is studded with old mine cut diamonds. Two diamonds are .50 carat
Category

Vintage 1930s Cocktail Rings

Materials

Diamond, 14k Gold, White Gold

Victorian Diamond Star Blue Enamel Pendant 14K Gold Antique, C. 1890
By Estate Jewelry
Located in East Brunswick, NJ
pointed star on the top of royal blue enamel has one .70ct oval cut Old Mine diamond and 12 rose cut
Category

Antique 1890s Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold, Enamel

Diamond Ring Solitaire with Accents Vintage 18K Gold Band 1.08 TDW
By Estate Jewelry
Located in East Brunswick, NJ
natural Old mine cut diamond in the center and two single cut diamonds on the sides. The center gem is
Category

Mid-20th Century Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Estate Diamond & Sapphire With Side Diamonds Platinum Ring
Located in Dallas, TX
Platinum 1.36ct Old Mine Cut Diamond 0.74ctw Sapphire 0.12ctw Side Diamonds, Size 7.5 3.46 Grams
Category

Early 20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

Diamond Ring Flower 14K Gold Cocktail Vintage 4.07 TDW
By Estate Jewelry
Located in East Brunswick, NJ
color. 8 more Old mine cut diamonds total 1.61 carat of VS2-SI1 clarity and H color. The total diamond
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Estate Platinum Diamond Engagement Ring 2.05ct
Located in Narberth, PA
mine cut cushion cut diamond, which is held within a four-prong setting. The stone displays J color and
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Platinum

Estate 3.20 Carat Diamond Chandelier Earrings
Located in Napoli, NA
and comfortable to wear. The old mine cut diamonds give a touch of uniqueness to the jewel. Circa 1980
Category

Vintage 1980s European Retro Chandelier Earrings

Materials

Diamond, 18k Gold, White Gold

Romantic Victorian Old Mine Cut Diamond Double Snake Ring
Located in Santa Barbara, CA
of chunky, old mine cut diamonds (0.33 carats) that glitter under candlelight add a fab touch
Category

Antique 1840s Victorian Engagement Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Edwardian Old Mine Cut Diamond Three Stone Platinum Ring Circa 1910
Located in Los Angeles, CA
Edwardian Old Mine Cut Diamond three stone platinum ring, circa 1910. The Edwardian era, spanning
Category

Vintage 1910s Edwardian Three-Stone Rings

Materials

Diamond, Platinum

Estate 14k Diamond Huggie Hoop Earrings
Located in Narberth, PA
appearance. The front of each earring features a large invisibly-set mine cut diamond. The diamonds display I
Category

21st Century and Contemporary Modern Hoop Earrings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

Victorian Old Mine Diamond Silver And Gold Pin Pendant Circa 1890s
Located in Los Angeles, CA
Victorian Old Mine Diamond silver and gold pin pendant, circa 1890s. The Victorian era, spanning
Category

Antique 1890s Victorian Pendant Necklaces

Materials

Diamond, Gold, Silver

Vintage 14K Gold Floral Brooch with Ruby & Old Mine Cut Diamond
Located in Miami, FL
subtle sparkle. One of the leaves is adorned with an antique old mine cut diamond—a rare and desirable
Category

Vintage 1960s Brooches

Materials

Diamond, Ruby, 14k Gold

Luxurious 2.04ctw Mine Cut Diamond Fringe Necklace in 14K Rose Gold
Located in Boston, MA
Aston Estate Jewelry presents: A refined victorian bib necklace featuring old mine cut diamonds
Category

Antique Early 1900s Victorian Pendant Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Victorian 3.02ctw Mine Cut Diamond Engagement Ring in 18K Yellow gold
Located in Boston, MA
. Featuring a central cushion shaped old mine cut diamond, weighing 1.52 carats, with an H color grade and
Category

Antique 1870s Victorian Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold

Art Nouveau Azalea Flower with 0.15ct Mine Cut Diamond Convertible Pendant
Located in Boston, MA
Aston Estate Jewelry Presents: An Art Nouveau period blooming azalea flower with diamond accent
Category

Early 20th Century Art Nouveau Pendant Necklaces

Materials

Diamond, Gold, 14k Gold

Victorian 1.08ctw Old Mine Cut Diamond Navette Ring in 14K Yellow Gold
Located in Boston, MA
old mine cut white diamonds. The diamonds are beautifully set in a 14k yellow gold band, creating a
Category

Antique 1870s Victorian Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

Victorian 0.51ct Old Mine Cut Diamond Buttercup Engagement Ring in 14 Karat Gold
Located in Boston, MA
Aston Estate Jewelry Presents: A Victorian engagement ring featuring an old mine cut diamond. The
Category

Antique 1880s Victorian Engagement Rings

Materials

Diamond, 14k Gold

Estate Sophia D GIA Certified 1.33ct Diamond Engagement Ring
Located in New York, NY
certified old mine cut diamond that weighs 1.33ct. The color of the diamond is F with VS1 clarity. The
Category

20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

Victorian Floral Motif Mine & Rose Cut Diamond Ring in 14K Yellow Gold
Located in Boston, MA
mine cut diamond, with a clarity of VS2 and an H color grade. The central diamond is surrounded by 2.20
Category

Antique 1860s Victorian Fashion Rings

Materials

Diamond, 14k Gold, Yellow Gold, Silver

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Estate Mined Diamonds For Sale on 1stDibs

There is a broad range of estate mined diamonds for sale on 1stDibs. Frequently made of Gold, 14k Gold and 18k Gold, these items were constructed with great care. Our collection of these items for sale includes 43 vintage editions and 3 modern creations to choose from as well. Our inventory has long been popular, and it includes earlier versions that date to the 18th Century and newer variations that were made as recently as the 21st Century. Art Deco and Retro are consistently popular styles when it comes to estate mined diamonds. Many examples in our inventory of these items are appealing no matter their origins, but Diamonds Mine, Emeralds Maravellous and Five Star Jewelry produced popular versions that are worth a look. A selection of old mine cut, old european cut and round cut can be found today on these pages. If you’re browsing the variety of estate mined diamonds for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are Estate Mined Diamonds?

Prices for estate mined diamonds start at $495 and top out at $143,695 with these rings, on average, selling for $2,920.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

Questions About Estate Mined Diamonds
  • 1stDibs ExpertFebruary 22, 2021
    A mine cut diamond is an antique diamond cut known for its bulky and often uneven shape, cutlet, and tiny table. This type of diamond cut was quite popular in the mid-1800s to the early-1900s
    Mine cut diamonds are typically called OLD MINE CUTS, This type of cutting started in the early 1700s. The shapes are typically cushion shape and the cutting was done all by hand. Though they do not have the sparkle of modern cut diamonds, when they sparkle in sunlight or candle light, they have this beautiful alluring shimmer.
  • 1stDibs ExpertApril 5, 2022
    Mine cut diamonds are up to 300 years ago. Mine cut diamonds were popular around the 18th century during Victorian times and are still in high demand today. You’ll find a wide selection of mine cut diamond jewelry on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    Because the old mine cut is no longer used on diamonds, diamonds with this cut are rare and so you can often get quite a lot of money for them. Nevertheless, it is still dependent on the quality of the individual diamonds and on the color, clarity, cut and carat number.
  • 1stDibs ExpertFebruary 22, 2021
    Old mine cut diamonds are usually worth less than old european cut diamonds. Because they are generally 10-15% less expensive, they are often larger than other cut diamonds for engagement rings.
  • Like any other diamond, an old mine cut diamond's worth depends on a variety of factors. These factors include the 4C's (color, clarity, cut, carat), the overall beauty and "make" of the stone, the demand, supply, etc. On average however, old mine cuts are typically priced slightly lower (around 5-10%) than modern cut diamonds.