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Natural Ceylon sapphire and diamond ring, circa 1950.
Located in London, GB
old cut natural unenhanced Ceylon sapphire in an open back four claw setting with an approximate
Category

Vintage 1950s Solitaire Rings

Materials

Diamond, Sapphire, Platinum

Antique 15kt Gold Sapphire and Diamond Crescent Brooch
Located in Braintree, GB
and old mine-cut diamonds. The sapphires exhibit a deep blue hue, while the diamonds provide a bright
Category

Antique 1890s British Brooches

Materials

Diamond, Sapphire, Gold, 15k Gold

Sapphire and diamond coronet cluster ring, French, circa 1950.
Located in London, GB
Sapphire and diamond coronet cluster ring. Set to centre with an oval old cut natural unenhanced
Category

Mid-20th Century French Engagement Rings

Materials

Sapphire

Vintage yellow Ceylon sapphire and diamond ring, circa 1960.
Located in London, GB
Vintage yellow Ceylon sapphire and diamond ring. Centrally set with an oval old cut natural
Category

Vintage 1960s Solitaire Rings

Materials

Diamond, Yellow Sapphire, Platinum

Rare 11 Ct Ceylon Sapphire Diamond Platinum Ring
Located in Chicago, IL
An 11.51 ct old mine cut Ceylon sapphire of a vivid blue color is set in a modern platinum and
Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Unique GIA Certified 2.12 Carat Old European Diamond Platinum Engagement Ring
Located in New York, NY
faceted cut sapphire and old mine cut diamond accents. It is currently size 5, and can easily be resized
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

14ct Yellow Gold Sapphire and Diamond Bracelet 0.69ct 9.83g
Located in SYDNEY, NSW
design with three bezel-set sapphires and two old European cut diamonds. The sapphires total an estimated
Category

21st Century and Contemporary Modern Bracelets

Materials

Diamond, Sapphire, Yellow Gold, 14k Gold

Hancocks 3.63ct Diamond Sapphire Floral Cluster Earrings
By Hancocks
Located in London, GB
old cut diamond and sapphire cluster stud earrings by Hancocks. To the centre of each earring is a
Category

2010s British Stud Earrings

Materials

White Diamond, Blue Sapphire, Platinum

Antique Art Deco Platinum GIA Old European Diamond Engagement Ring Band Set Ba
Located in Montclair, NJ
genuine Art Deco mounting, and decorated further with old cut diamonds and synthetic sapphires that are
Category

Vintage 1920s Art Deco Bridal Rings

Materials

Diamond, Sapphire, Platinum

C1820 Sapphire and Diamond Triple Cluster Bow Ring
Located in Baltimore, MD
cut ceylon sapphires are the central feature and are surrounded by the smaller diamonds. We love the
Category

Antique 1810s English Georgian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Burmese Sapphire and Diamond Ring, circa 1935
Located in London, GB
Burmese sapphire and diamond ring. Set with a cushion shape old cut natural unenhanced Burmese
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Antique Sapphire Diamond Platinum Bow Brooch
Located in Brighton, GB
Sapphires & Old Cut Diamond High Quality Safety Clasp, with Gold Pin Measures Approx 81.5mm x 6.3mm
Category

Early 20th Century English Brooches

Materials

Diamond, Sapphire, Platinum

French Art Deco Sapphire and Diamond Bracelet
Located in London, GB
captivating navy blue sapphire amidst a double frame of round faceted old cut diamonds and square calibrated
Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold

Sapphire and diamond cluster earrings, circa 1920.
Located in London, GB
Sapphire and diamond cluster earrings. A matching pair of earrings, each set with an oval old cut
Category

Vintage 1920s Art Deco Drop Earrings

Materials

Diamond, Sapphire, Platinum

Kashmir sapphire and diamond coronet cluster, circa 1890
Located in London, GB
Kashmir sapphire and diamond coronet cluster ring. Set to center with an oval old cut natural
Category

Antique 1890s Cluster Rings

Materials

Diamond, Sapphire, Gold, Yellow Gold

Yellow Ceylon Sapphire and diamond pendant, circa 1910.
Located in London, GB
Yellow Ceylon Sapphire and diamond pendant. Set to centre with a cushion shape old cut natural
Category

Vintage 1910s Edwardian Pendant Necklaces

Materials

Yellow Sapphire

GIA 1.21 Carat Natural Yellow Orange Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
and diamond engagement ring. Original old European cut sapphire with raised crown and small table
Category

Early 20th Century Engagement Rings

Materials

Diamond, Sapphire, Yellow Sapphire, Platinum

Art Deco Sapphire and Diamond Cluster Ring
Located in London, GB
central sapphire is raised in a claw mount and surrounding it there are 12 old European cut diamonds. The
Category

Vintage 1920s Engagement Rings

Materials

Sapphire, 18k Gold

Mellerio sapphire and ruby clip earrings, French, circa 1940.
By Mellerio
Located in London, GB
Mellerio sapphire and ruby clip earrings. A matching pair, each set with seven round old cut
Category

Vintage 1940s European Clip-on Earrings

Materials

Ruby, Sapphire, 18k Gold

Art Deco Style 1.48 Carat Diamond and 0.46 Carat Sapphire Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
seamlessly with the plain ring shank. This old cut diamond and sapphire ring has been independently tested
Category

Vintage 1910s Unknown Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Natural Ceylon Sapphire and Diamond Ring, circa 1920
Located in London, GB
Ceylon sapphire and diamond ring. Centrally set with an oval old cut natural unenhanced Ceylon
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco sapphire and diamond double clip brooch, circa 1925.
Located in London, GB
Art Deco sapphire and diamond double clip brooch. Each set with one drop shape old cut natural
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Victorian Diamond and Sapphire Double Pin, circa 1900s
Located in London, GB
rows of diamonds and sapphires. The old cut diamonds total to 0.40 carat, while the french cut blue
Category

Antique Early 1900s Unknown Victorian Brooches

Materials

Diamond, Sapphire, 18k Gold, Platinum

Vintage 4.20ct Diamond and Sapphire Drop Earrings, c.1950s
Located in London, GB
A superb pair of drop earrings featuring old cut diamonds and blue sapphires. The stunning pair of
Category

Vintage 1950s Unknown Drop Earrings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Victorian 14k White Gold Diamond and Sapphire Pin
Located in Montreal, QC
Victorian 14k marked white gold pin with 3.5mm old cut diamond and baguette cut sapphire. No maker
Category

Antique 19th Century Unknown Victorian More Jewelry

Materials

Diamond, Sapphire, 14k Gold, White Gold

Dilys Old Hollywood Diamond Drop 18K Gold Earrings
By Dilys
Located in Hong Kong, HK
of Old Hollywood grandeur. Set with 74 fancy color diamonds totaling 1.28 carats, 20 white diamonds
Category

Early 2000s Hong Kong Art Deco Drop Earrings

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold, Yellow Gold

Bulgari Sapphire and Diamond Cluster Ring, Italian, circa 1970
By Bulgari
Located in London, GB
Bulgari sapphire and diamond cluster ring. Set to centre with one octagonal old cut natural
Category

Vintage 1970s European Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Edwardian 7.13 Ct Untreated Sapphire Plus 18 KT Bracelet
Located in Napoli, IT
by a selection of 5 old mine oval cut Natural Sapphires bright Yellow colour with a special lemon
Category

Early 20th Century European Edwardian Link Bracelets

Materials

Sapphire, 18k Gold

Antique 1900s 2.55 Carat Diamond and 2.60 Carat Sapphire Platinum Brooch
Located in Jesmond, Newcastle Upon Tyne
quality, set with very high color graded old cut diamonds and natural blue sapphires. This brooch is in
Category

Antique Early 1900s Unknown Brooches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold, Platinum

Vintage OEC Diamond and Sapphire Platinum Statement Ring
Located in Montreal, QC
securely nestled Hand set .76 Carat Old European Cut Diamond. Complimented by Sapphires, weighing approx
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Vintage Art Deco Platinum Sapphire Diamond Cocktail Ring
Located in Brighton, GB
Wow Factor! Set with Gorgeous Blue Sapphires & Fabulous Old Cut Diamonds, The Detail & Design is so
Category

Mid-20th Century English Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Ceylon Sapphire and Diamond Cluster Ring, 1940
Located in London, GB
Ceylon sapphire and diamond cluster ring. Centrally set with one cushion shape old cut natural
Category

Vintage 1940s Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Ceylon Sapphire and diamond coronet cluster ring, circa 1915.
Located in London, GB
Ceylon sapphire and diamond coronet cluster ring. Set to center with an impressive oval old cut
Category

Vintage 1910s Edwardian Cluster Rings

Materials

Diamond, Sapphire, Yellow Gold, Platinum

Retro 0.60 Carat Diamond and Sapphire Snake Ring 18 Karat Gold
Located in Miami, FL
head there is an old mine cut 0.30 carat diamond FG/VS clarity and on the other there is a old mine cut
Category

Vintage 1950s Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

Edwardian 0.35ct Sapphire and Diamond Drop Pendant, c.1910s
Located in London, GB
This beautiful Edwardian drop pendant displays a wonderful collection of old cut diamonds and
Category

Vintage 1910s British Edwardian Drop Necklaces

Materials

Diamond, Sapphire, Gold, Yellow Gold, Platinum, 18k Gold

David Webb 13ct Yellow Sapphire 1.62ct Diamond Two-Tone Gold Platinum Ring
By David Webb
Located in New York, NY
miner–cut yellow sapphire set in a bold bezel, framed by alternating sections of black enamel and pavé
Category

20th Century Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Edwardian Burmese sapphire and diamond cluster ring, circa 1910.
Located in London, GB
Edwardian Burmese sapphire and diamond cluster ring. Set to the centre with a cushion shape old cut
Category

Vintage 1910s Edwardian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Vintage 1.11 Carat Diamond and Sapphire Platinum Filigree Ring
Located in Montreal, QC
. Surrounded by Sapphires, weighing approx. 1.94tcw and 1.28tcw Old European Cut Diamonds. Approx. Dimensions
Category

Late 20th Century Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Sapphire, Diamond, Pearl, Platinum and Gold Bracelet
Located in New York, NY
navette-shaped panels set with calibre-cut sapphires amid old-cut diamond borders, alternated with pearls
Category

20th Century Art Deco Link Bracelets

Materials

Diamond, Pearl, Sapphire, Platinum

Natural Burmese Sapphire and Diamond Drop Earrings, circa 1925
Located in London, GB
shape old cut natural unenhanced Burmese sapphire in an open back rubover setting, two in total with a
Category

Vintage 1920s Unknown Art Deco Drop Earrings

Materials

Diamond, Sapphire, Platinum

Diamonds Sapphires 14 Karat Yellow Gold Cocktail Ring
Located in Marcianise, IT
, creating a vintage-inspired piece with a contemporary edge. It features a unique array of old-cut diamonds
Category

Vintage 1970s Italian Artisan Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Edwardian 1.10ct Sapphire and Diamond Trilogy Halo Ring, c.1910s
Located in London, GB
vivid blue sapphires enrobed in old cut diamonds. The central sapphire sits the largest at 0.50 carat
Category

Vintage 1910s Unknown Edwardian Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Peter Suchy GIA 4.02 Carat Sapphire Diamond Platinum Three-Stone Engagement Ring
By Peter Suchy
Located in Stamford, CT
Sapphire and diamond engagement ring. GIA certified Old European cut blue sapphire set in a
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Circa 1920 Natural Unenhanced Burmese Sapphire Diamond Platinum Necklace Tiara
Located in London, GB
Burmese sapphire and diamond necklace/tiara. Set to the centre with twenty two cushion shape old
Category

Vintage 1920s Unknown Link Necklaces

Materials

Diamond, Blue Sapphire, Platinum

Victorian 1.05ct Sapphire and Diamond Five Stone Ring, c.1880s
Located in London, GB
This enchanting Victorian ring features central sapphire flanked by old cut diamonds. The central
Category

Antique 1880s Unknown Victorian Cluster Rings

Materials

Sapphire, Diamond, Platinum, Yellow Gold, 18k Gold

Antique Sapphire, Diamond Pearl Cocktail Ring
Located in Brighton, GB
Calibrated Sapphires, Old Cut Diamonds & Natural Pearl to the Centre UK Size N 1/2 US Size 7 Can be
Category

Early 20th Century European Edwardian Cocktail Rings

Materials

Sapphire, Pearl, Diamond, Platinum, 18k Gold

Art Deco Diamond Sapphire Antique Bow Brooch Ref: 548750
Located in Chicago, IL
with old cut diamonds and calibre cut sapphires. The pin and pin guard are made of 14K gold. Estimated
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, Gold, 14k Gold, Platinum

Peter Suchy GIA Certified 1.00 Carat Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Old European cut diamond and round sapphire engagement ring. GIA certified white face up and very
Category

2010s Bridal Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Vintage 18k Yellow Gold Sapphire French Hallmark Eagle Solitaire Ring
Located in Montclair, NJ
–Stone(s)– (1) Natural Genuine Sapphire - Old Mine Cut - Illusion Prong Set - Deep Blue Color
Category

21st Century and Contemporary Solitaire Rings

Materials

Sapphire, Gold, 18k Gold, Yellow Gold

Peter Suchy GIA 1.50 Carat Diamond Sapphire Platinum Three-Stone Engagement Ring
By Peter Suchy
Located in Stamford, CT
1.50 carat old mine brilliant cut diamond and sapphire three-stone engagement ring. With raised
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco 0.40ct Sapphire Cluster Ring, c.1920s
Located in London, GB
. The old cushion cut sapphire weighs 0.40 carat and is claw set within a cluster of old cut diamonds
Category

Vintage 1920s Unknown Art Deco Cluster Rings

Materials

Sapphire, 18k Gold, Platinum

Diamonds Sapphires Platinum Ring
Located in Milano, MI
old cut diamonds for circa 2.5ct total. Highlights - Central diamond 0.65ct - Total 2.5ct diamonds
Category

20th Century Art Deco Dome Rings

Materials

Diamond, Sapphire, Platinum

Vintage 18ct Gold Sapphire Diamond Cocktail Ring
Located in Brighton, GB
Set with Square Cut Sapphires & Centre Old Cut Diamond Unisex Style- would make a great pinky ring
Category

Mid-20th Century English Cocktail Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

Victorian Era 18KT Yellow Gold/ Platinum Sapphire And Diamond Ring
Located in New York, NY
weighing 8.50CT surrounded by 5.30CT-TW old European cut diamonds. The beautiful sapphire and diamonds in
Category

Antique 1890s Late Victorian Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold, Platinum

Antique Sapphire and Diamond Halo Ring
Located in New York, NY
-cut sapphire of deep velvety blue, framed by a halo of old mine cut diamonds in silver-topped gold
Category

20th Century Unknown Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, Yellow ...

Vintage Art Deco 1.55 Carat Diamond and Sapphire Platinum Cocktail Ring
Located in Montreal, QC
Cocktail Ring. Centering a securely nestled Hand set 1.55 Carat Old European Cut Diamond. Surrounded by
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Antique Ceylon sapphire and diamond cluster ring, circa 1900.
Located in London, GB
Antique Ceylon sapphire and diamond cluster ring. Set to centre with a cushion shape old cut
Category

Antique Early 1900s Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

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Old Cut Sapphire For Sale on 1stDibs

Find the exact old cut sapphire you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using Platinum, Gold and 18k Gold. You can easily find a 502 antique edition and 98 modern creations to choose from as well. If you’re looking for an old cut sapphire from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. There have been many well-made iterations of the classic old cut sapphire over the years, but those made by Antinori Fine Jewels, Hancocks and Single Stone are often thought to be among the most beautiful. See these pages for an old european cut iteration of this accessory, while there are also old mine cut cut and round cut cut versions available here, too. Finding an old cut sapphire for sale for women should be easy, but there are 125 pieces available to browse for unisex as well as men, too.

How Much is an Old Cut Sapphire?

The price for an old cut sapphire starts at $538 and tops out at $209,000 with these rings, on average, selling for $7,282.

The Legacy of Sapphire in Jewelry Design

On 1stDibs, shop the bright blue gems that star in sapphire rings, sapphire necklaces and other vintage and antique sapphire jewelry

Sapphires — the stone of choice for Napoleon, Princess Diana and Elizabeth Taylor — have been a favorite of aristocrats and the well-to-do since the time of the Ancient Greeks.

Picture a sapphire. If the stone you conjure is a deep cornflower blue, you’re seeing only part of the picture. Although blue Kashmirs are considered the most valuable, sapphires come in every color except red. No matter the hue, this very special gem is rich in history and beloved by royals (FYI, Princess Diana and Kate Middleton share an 11-carat sapphire engagement ring), so September babies are in very noble company.

America’s version of royalty — old money and celebrities — have also shown a predilection for the blue stones. In 1940, John D. Rockefeller Jr. had Cartier mount a 62-carat sapphire he had bought from an Indian maharajah in a brooch for his first wife, Abby Aldrich Rockefeller; in 2001, the piece sold for a then-record of $3,031,000 at Christie’s New York.

The grand dame of jewelry, Elizabeth Taylor had a passion for the gems that her lovers were happy to indulge. Second husband Michael Wilding gave her an engagement ring set with a cabochon sapphire, while Richard Burton famously presented her with a BVLGARI sautoir set with diamonds and sapphires, including at its center a cabochon Burmese weighing 52.72 carats. One of the star lots in the sale of Taylor’s jewels at the Christie’s New York in 2011, it sold for $5,906,500.

You don’t have to have blue blood or a bulging bank account, however, to get an eyeful of this much-coveted gem. A number of outstanding examples reside in public collections.

The Smithsonian Museum of Natural History owns the 423-carat Logan sapphire, a gift from the Guggenheim family, and the Hall sapphire and diamond necklace, designed by Harry Winston and featuring 36 fine, well-matched cushion-cut Sri Lankan sapphires weighing a combined 195 carats. Also in the collection is the Bismarck sapphire necklace, designed by Cartier and sporting a central sapphire weighing 98.6 carats, which Mona Von Bismarck donated to the museum.

Sapphires are composed of corundum. Their color derives from trace elements, such as iron, titanium, chromium, copper or magnesium. When the trace element produces a ruby hue, the stone is called, what else, a ruby. (which is, as mentioned above, why sapphires cannot be red by definition).

The allure of large gemstones endures throughout the periods characterized as vintage, and sapphire features frequently in vintage engagement rings. (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.)  

Find an exquisite collection of vintage and antique sapphire jewelry on 1stDibs.

Questions About Old Cut Sapphire
  • 1stDibs ExpertMay 5, 2023
    How old an old European-cut diamond is varies. The old European cut is a precursor to the modern round brilliant cut. The stone appears circular when looked at from the top (because of its low table or largest facet) and has a high crown (the part above the middle of the stone) with larger facets. The tip of the stone, or the culet, is flat instead of pointed. This style was used predominantly in the 19th century, hence the name. It is best to consult a certified appraiser for assistance with dating and identifying antique jewelry. On 1stDibs, find a variety of European-cut diamond jewelry.
  • 1stDibs ExpertApril 5, 2022
    Not to be confused with an emerald gemstone, an emerald-cut sapphire is a sapphire cut into a rectangular shape. An emerald-cut adds the illusion of flashing lights across the stone with its unique shape and step-cut along the edges. Browse a wide selection of sapphire jewelry in a variety of cuts on 1stDibs.
  • 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 ExpertOctober 12, 2021
    The best cuts for a blue sapphire are said to be oval, round, and cushion. The look of an oval-cut sapphire is similar to that of a round sapphire. The slightly extended shape, on the other hand, can make it appear larger than a similar-weight stone. A round cut is one of the most traditional shapes, and it helps a gem dazzle to its full potential. The presence of about 58 facets results in a large amount of light being reflected. Cushion cut, sometimes known as the 'pillow-cut,' has been popular for generations due to its cushion-like appearance. The gemstone has a rectangular form with soft, slightly rounded corners in this cut. Typically, the crown has 58 to 64 big facets. These cuts were popular in numerous forms of jewelry, including rings, pendants, and earrings. Find a wide variety of blue sapphire jewelry on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    Although old European cut diamonds are often priced lower than modern cuts, due to scarcity, they can sometimes be more valuable than modern cut diamonds.
  • 1stDibs ExpertApril 5, 2022
    Jewelry makers stopped using the old European cut for diamond and other gemstone jewelry around 1930. The style was common during the Art Deco period, but the brilliant cut became popular in the years that followed. On 1stDibs, shop a selection of Old European cut diamond gemstone jewelry.
  • 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 ExpertAugust 24, 2021
    Yes, old European cut diamonds can be worth more than many other cut diamonds as they are not produced anymore. This cut was developed and popularized between the years 1890 and 1930 and is likely to be found in an antique ring belonging to this period and featuring a round-cut diamond.
  • 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.