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Victorian Old Cut Diamond Five-Stone Ring
Located in London, GB
of five round faceted old European cut diamonds, each individually cut-collet set in silver, creating
Category
Antique 19th Century Victorian Fashion Rings
Materials
Diamond, Gold, 18k Gold, Yellow Gold, Silver
Antique 24.66Ct Oval Cut Opal and 9.81Ct Diamond Platinum Bracelet
Located in Jesmond, Newcastle Upon Tyne
side of the principle stone incorporates three feature Old European cut diamonds, collet set to the
Category
Vintage 1910s Unknown Cuff Bracelets
Materials
Diamond, Opal, Platinum
Emerald and 2.62 Carat Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
setting displays a central feature antique (circa 1900) 1.68ct Old European heart cut diamond, collet set
Category
Antique Early 1900s Cocktail Rings
Materials
Diamond, Emerald, Platinum
Antique and Vintage 2.48 Carat Diamond and 18k Yellow Gold Earrings
Located in Jesmond, Newcastle Upon Tyne
and 0.76ct Old European round cut diamond, collet set the scrolling lower terminals.
The vintage
Category
Vintage 1980s Unknown Lever-Back Earrings
Materials
Diamond, Yellow Gold
Art Deco Style 1.48 Carat Diamond and 0.46 Carat Sapphire, Platinum Dress Ring
Located in Jesmond, Newcastle Upon Tyne
either side with two smaller millegrain decorated collet set Old European round cut diamonds.
The
Category
Vintage 1910s Unknown Cocktail Rings
Materials
Diamond, Sapphire, Blue Sapphire, Platinum
Antique French Diamond Brooch in Platinum
Located in Jesmond, Newcastle Upon Tyne
diamond.
The floral setting is embellished with a further four collet set Old European round cut diamonds
Category
Vintage 1910s French Brooches
Materials
Diamond, Platinum
English Edwardian Ornate Diamond Platinum Ring
Located in London, GB
round old cut diamond in a millegrain collet setting with an approximate weight of 1.75 carats, set to
Category
Vintage 1910s Engagement Rings
Materials
Diamond, Platinum
1900s Antique 1.12 Carat Diamond and Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
stunning feature Old European round cut diamond, individually collet set to the apex of the central
Category
Antique Early 1900s Unknown Pendant Necklaces
Materials
Diamond, Yellow Gold, Silver
Antique 1.25 Carat Diamond and Platinum Dress Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
and 0.30ct Old European round cut diamond, in addition to two further Old European cut diamonds, all
Category
Vintage 1930s Unknown Cocktail Rings
Materials
Diamond, Platinum
Antique Art Deco 3 Carat Diamond Drop Earrings in Platinum
Located in Jesmond, Newcastle Upon Tyne
1.09ct and a 1.01ct Old European cut diamond, collet set to the articulating lower terminal.
The feature
Category
20th Century Unknown Art Deco Drop Earrings
Materials
Diamond, Platinum
Antique 1.68 Carat Diamond and White Gold Necklace
Located in Jesmond, Newcastle Upon Tyne
features a stunning 1.12ct Old European cut diamond individually collet set within a millegrain decorated
Category
Vintage 1920s Unknown Drop Necklaces
Materials
Diamond, White Gold, Platinum
Antique 4.13 Carat Diamond and Yellow Gold Necklace
Located in Jesmond, Newcastle Upon Tyne
antique necklace displays two impressive Old European round cut diamonds, collet set in relief at the
Category
Vintage 1920s Drop Necklaces
Materials
Diamond, White Gold, Yellow Gold
1920s Antique Diamond and Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
and 0.34Ct Old European cut diamond, individually collet set to the halo arrangement.
The tapering
Category
Vintage 1920s Unknown Brooches
Materials
Diamond, 14k Gold, Yellow Gold
Edwardian 0.96 Carat Diamond and 14k Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
platinum settings.
The pendant is ornamented with an impressive feature Old European round cut diamond
Category
20th Century Edwardian Drop Necklaces
Materials
Diamond, 14k Gold, Yellow Gold, Platinum
Antique 1.48 Carat Diamond Yellow Gold Pendant, circa 1900
Located in Jesmond, Newcastle Upon Tyne
impressive Old European round cut diamonds, pavé set in silver, in addition to two collet set diamonds to the
Category
Antique Early 1900s Unknown Pendant Necklaces
Materials
Diamond, Yellow Gold, Platinum, Silver
Bailey, Banks & Biddle 1920s Two-Stone Diamond Ring
By Bailey, Banks & Biddle
Located in London, GB
Bailey, Banks and Biddle two stone diamond ring. Set with two round old cut diamonds in open back
Category
Vintage 1920s American Art Deco Cluster Rings
Materials
Diamond, Platinum
Boivin Retro Gold Diamond "Guirlande de Feuilles" Leaves Brooch
By René Boivin
Located in New York, NY
leaves, the tapered garland set with old European-cut and old mine-cut diamonds spaced by collet-set
Category
Vintage 1940s French Modern Brooches
Materials
Diamond, Gold, 18k Gold
Antique Art Deco 1.46Ct Diamond and Platinum Dress Ring Circa 1920
Located in Jesmond, Newcastle Upon Tyne
ornamented with a central 0.28ct and 0.26ct Old European round cut diamond, collet set in a vertical
Category
Vintage 1920s Art Deco Cocktail Rings
Materials
Diamond, Platinum
Antique 1.82 Carat Diamond and 15k Yellow Gold Five Stone Ring Circa 1900
Located in Jesmond, Newcastle Upon Tyne
.
The pierced decorated ring setting displays five Old European round cut diamonds, individually collet
Category
Antique Early 1900s Cocktail Rings
Materials
Diamond, Yellow Gold
Antique 1.05Ct Emerald 1.18Ct Diamond Yellow Gold Ring, Circa 1930
Located in Jesmond, Newcastle Upon Tyne
ornamented with a feature 1.12Ct Old European cut diamond, 18k yellow gold collet set in relief to the center
Category
Vintage 1930s Unknown Cocktail Rings
Materials
Diamond, Emerald, Yellow Gold, Platinum
Belperron Art Deco Gold Platinum Diamond Fibula Brooch
By Suzanne Belperron
Located in New York, NY
paisley motifs, each centering upon a large old European-cut diamond collet, mounted in platinum and
Category
Vintage 1930s French Art Deco Brooches
Materials
Diamond, 18k Gold, Platinum, Gold
Antique 1.33 Carat Diamond and 18k Yellow Gold Cocktail Ring Circa 1915
Located in Jesmond, Newcastle Upon Tyne
cut diamond, collet set in a vertical formation to the centre of the design.
The feature diamond
Category
Vintage 1910s Cocktail Rings
Materials
Diamond, Yellow Gold, 18k Gold, White Gold
Antique Georgian Early 19th Century 1ct Ruby and Diamond Target Cluster Ring
Located in London, GB
Burmese origin. Neatly prong-set, it is encircled by a halo of old cut diamonds in crimpled collet silver
Category
Antique Early 19th Century English Georgian Cluster Rings
Materials
Diamond, Ruby, 22k Gold
Art Deco 0.66 Carat Diamond and 14 Carat White Gold Dress Ring
Located in Jesmond, Newcastle Upon Tyne
cut diamond, flanked diagonally by two further Old European round cut diamonds, all individually
Category
20th Century Unknown Art Deco Cocktail Rings
Materials
Diamond, 14k Gold, White Gold
Antique 0.50 Ct Diamond and 0.20 Ct Ruby 18 Ct White Gold Dress Ring
Located in Jesmond, Newcastle Upon Tyne
Art Deco design is ornamented with four Old European round cut diamonds, individually collet set in a
Category
20th Century Unknown Art Deco Cluster Rings
Materials
Diamond, Ruby, 18k Gold, White Gold
Art Deco Period Tutti Frutti Diamond Sapphire Carved Ruby Platinum Ring
Located in New York, NY
pair of Old European cut collet set diamonds, .30 TCW, with 8 single cut diamonds composing the body of
Category
Early 20th Century Art Deco Cocktail Rings
Materials
Diamond, Ruby, Sapphire, Platinum
Art Deco 0.52Ct Emerald, 2.00Ct Sapphire, 4.46Ct Diamond and Platinum Bracelet
Located in Jesmond, Newcastle Upon Tyne
rectangular shaped links are each set with a stunning feature Old European round cut diamond, collet set to
Category
Vintage 1910s French Art Deco Link Bracelets
Materials
Diamond, Emerald, Sapphire, Gold, Platinum
H 0.14 in W 0.47 in L 6.85 in
Antique 1.62 Carat Diamond Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
round cut diamond.
The feature diamond is encircled by ten smaller Old European round cut diamonds
Category
Vintage 1920s Unknown Brooches
Materials
Diamond, Yellow Gold, Platinum
Antique 1.25Ct Sapphire 2.34Ct Diamond and Platinum Brooch Circa 1925
Located in Jesmond, Newcastle Upon Tyne
.
Either end of the shaped setting terminates with a 0.33ct and 0.29ct Old European cut diamond, each
Category
Vintage 1920s Brooches
Materials
Diamond, Sapphire, Platinum
Antique French 5.00Ct Diamond and Platinum Brooch Art Deco Circa 1910
Located in Jesmond, Newcastle Upon Tyne
feature 1.10ct Old European round cut diamond, collet set to the centre; this feature stone has been
Category
Vintage 1910s French Brooches
Materials
Diamond, Platinum
Victorian 3.06 Carat Garnet and Diamond Yellow Gold Snake Necklace
Located in Jesmond, Newcastle Upon Tyne
, above two Old European cut diamonds, collet set to represent the snake's eyes.
A feature claw set
Category
Antique 1890s Victorian Pendant Necklaces
Materials
Diamond, Garnet, Yellow Gold
Antique Art Deco 1.10 Carat Diamond and Ruby Platinum Dress Ring
Located in Jesmond, Newcastle Upon Tyne
feature 0.61 ct Old European round cut diamond, collet set to the center of the Art Deco arrangement.
The
Category
20th Century Unknown Art Deco Cluster Rings
Materials
Diamond, Ruby, Platinum
1920s Diamond Yellow Gold and Hardstone Cufflink and Stud Set
Located in Jesmond, Newcastle Upon Tyne
European round cut diamond collet set in 18k white gold.
An plain 18k white gold border encircles each
Category
Vintage 1920s Cufflinks
Materials
Diamond, 18k Gold, White Gold, Yellow Gold, Gold
1.20 Carat Basaltic Sapphire 1.28 Carat Diamond Platinum Cluster Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
ten pavé set Old European cut diamonds, accented with a collet set baguette cut diamond to either side
Category
Vintage 1930s Unknown Cluster Rings
Materials
Diamond, Sapphire, Platinum
Antique 1920s Ruby and 1.88 Carat Diamond Yellow Gold Marquise Ring
Located in Jesmond, Newcastle Upon Tyne
collet set 0.30ct and 0.28ct Old European round cut diamond.
Six collet set Old European round cut
Category
20th Century Art Deco Cocktail Rings
Materials
Diamond, Ruby, 18k Gold, White Gold, Yellow Gold
Antique 0.26 Carat Ruby and 0.65 Carat Diamond, 14k Yellow Gold Ring Circa 1925
Located in Jesmond, Newcastle Upon Tyne
portions by a feature Old European round cut diamond, all collet set in a vertical linear formation.
The
Category
Vintage 1920s Cocktail Rings
Materials
Diamond, Ruby, Yellow Gold, Platinum
Leitão & Irmão Art Deco Onyx Chrysoprase Pearl White Enamel Bracelet Yellow Gold
Located in Lisbon, PT
circular-shape greenish-blue tourmaline to the centre surrounded by four Old Mine-cut diamonds collet-set
Category
Vintage 1920s Portuguese Art Deco Link Bracelets
Materials
Chrysophrase, Onyx, Pearl, Gold, 18k Gold, Yellow Gold, Enamel
Edwardian Diamond Set Cross
Located in London, GB
collets to a smaller old-cut diamond set surround estimated to weigh a total of 4.2 carats, all millegrain
Category
Antique Early 19th Century British Edwardian Pendant Necklaces
Materials
Diamond, Platinum
A Pair Of Pearl And Diamond Drop Earrings
Located in London, GB
A pair of pearl and diamond drop earrings, the top a cultured pearl suspending three old-cut
Category
Vintage 1920s English Art Deco Drop Earrings
Materials
Diamond, Cultured Pearl, 9k Gold, Platinum
Victorian Opal and Diamond Flower Brooch
Located in London, GB
An Victorian opal and diamond flower brooch, with a central old brilliant-cut diamond in a silver
Category
Antique Mid-19th Century British High Victorian Brooches
Materials
Diamond, Opal, Yellow Gold
Victorian Natural Pearl and Diamond Cluster Necklace
Located in London, GB
fancy figure-of-eight links, centred with a single old brilliant-cut diamond cut-down collet silver set
Category
Antique 1880s Link Necklaces
Materials
Diamond, Pearl, Natural Pearl, 18k Gold, Yellow Gold, Silver
2.01 ct old mine cut diamond solitaire ring, Georgian collet setting, GIA cert
Located in Magdeburg, DE
.
- One GIA certified old mine cut diamond, 7.51 x 7.37 x 5.08/ 2.01 ct (L/ VS2)
- 750/ 18k solid yellow
Category
2010s German Georgian Engagement Rings
Materials
Diamond, 18k Gold, Silver
1.35 Carat Reclaimed Old Mine Cut Diamond Ring in 19k Gold Collet Setting
Located in Edmonton, AB
1.35 carat reclaimed chunky antique Old Mine Cut diamond in 19K gold setting
Shank is 18K gold
Category
2010s Canadian Edwardian Bridal Rings
Materials
Diamond, Gold, 18k Gold
Cufflinks 14 Karat Gold Openwork Knots with Diamond Collet, Russian circa 1890
Located in London, GB
diamond collet, swivelling torpedo terminal.
Measures 15mm across.
Antique (over 100 years old),
Late 19th
Category
Antique 1890s Russian Russian Empire Cufflinks
Materials
Diamond, 14k Gold, Gold
Antique Old Cut Diamond and Pearl Pendant, Victorian circa 1890s
Located in Yorkshire, West Yorkshire
late Victorian diamond and pearl circular cluster pendant. The centre is set with an old cut diamond in
Category
Antique 1890s Victorian Pendant Necklaces
Materials
Diamond, Pearl, 9k Gold
Magnificent Belle Epoque .90 Carat Diamond Rare Panel Ring
Located in Napoli, IT
itself
Beauty in all expressions
Highlighted by Diamonds; centre Old European cut Diamond set onto collet
Category
Antique Early 1900s Belle Époque Engagement Rings
Materials
Diamond, 18k Gold, Platinum
Art Deco Diamond and Platinum Earrings
Located in Tetsworth, GB
Art Deco Diamond & Platinum Earrings
Set with rose cut, single cut & old cut diamonds (approx
Category
Early 20th Century Drop Earrings
Magnificent Georgian Cabochon Emerald and Diamond Necklace
Located in Greenwich, CT
old mine cut diamond clusters and diamond collet intersections mounted in silver and gold, detachable
Category
Antique Early 19th Century Georgian More Necklaces
Materials
Emerald, 18k Gold
An Antique Diamond Necklace
Located in Firenze, IT
Composed of a line of graduated old-cut diamond collets,the central pear-shaped diamond cluster and
Category
Antique Late 19th Century English Victorian Chain Necklaces
Materials
Diamond, 18k Gold
Old European Cut Diamond Pendant on Chain
Located in London, GB
A hand cut Old European cut diamond single stone pendant collet set in millé-grained platinum on
Category
Early 2000s Unknown Pendant Necklaces
Materials
Diamond, 18k Gold
Antique Old European Cut Diamond Dormeuse Earrings
Located in New York, NY
A pair of antique two-stone old European cut diamond dormeuse earrings in collet settings, in 18k
Category
Antique 1870s Victorian Drop Earrings
Materials
Diamond, 18k Gold, Sterling Silver
Cushion Shaped Old Cut Diamond Ring
Located in Firenze, IT
Centering on a cushion-shaped old cut diamond within a pinch collet setting of silver and gold
Category
21st Century and Contemporary Italian Solitaire Rings
Materials
Diamond, 18k Gold, Yellow Gold, Silver
Late Georgian Period Old Mine Cut Diamond Cluster Ring
Located in Los Angeles, CA
a surround of smaller Old Mine Cut diamonds, collet set in a closed foil backed setting. The shank
Category
Antique Early 19th Century English Georgian Cluster Rings
Materials
Diamond, Sterling Silver
Antique Fringe Necklace with 50 Carat of Old Mine Cut Diamonds, Hancocks
By Hancocks
Located in London, GB
thirty old European cut diamonds in cut down collet settings, between these is suspended twenty seven
Category
Antique 19th Century British Victorian More Necklaces
Materials
Diamond, 18k Gold
Victorian Pearl and Diamond Drop Earrings
Located in London, GB
impressive round faceted old cut diamonds have been individually cut-collet set in a graduating fashion above
Category
Antique 19th Century Victorian Drop Earrings
Materials
Diamond, Pearl, 18k Gold, Silver
1910s Antique Diamond and Yellow Gold Gent's Ring
Located in Jesmond, Newcastle Upon Tyne
slightly smaller Old European round cut diamond, also collet set.
The elevated ring shoulders meld with
Category
Vintage 1910s British More Rings
Materials
Diamond, 18k Gold, Yellow Gold
1920s Antique 1.81 Carat Diamond and Yellow Gold Cluster Earrings
Located in Jesmond, Newcastle Upon Tyne
cut diamond, platinum collet set in subtle relief.
The earrings each feature a further eight Old
Category
Vintage 1920s Unknown Stud Earrings
Materials
Diamond, Yellow Gold, Platinum, Silver
H 1 in W 1 in D 1 in Dm 1 in L 1 in
1940s Art Deco Pearl and 1.55 carat Diamond and Platinum Necklace
Located in Jesmond, Newcastle Upon Tyne
seed pearl, encircled by ten collet set Old European round cut diamonds.
The pearl and diamond cluster
Category
Vintage 1940s Unknown Art Deco Drop Necklaces
Materials
Diamond, Pearl, Platinum
H 14.49 in W 1.15 in Dm 0.24 in L 1.89 in
Antique Diamond and 1.35 Carat Sapphire Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
Art Deco setting is ornamented with a feature antique 1910s 0.33Ct Old European cut diamond, collet
Category
Vintage 1910s American Art Deco Cocktail Rings
Materials
Diamond, Sapphire, Platinum
1920s Antique Art Deco 0.98 Carat Diamond and Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
-cuts.
Three Old European round cut diamonds are collet set to a trefoil design to the upper border of
Category
Vintage 1920s Unknown Art Deco Drop Necklaces
Materials
Diamond, 14k Gold
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Old Cut Diamond Collet For Sale on 1stDibs
Surely you’ll find the exact old cut diamond collet you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using gold, platinum and 18k gold. Our collection of these items for sale includes 1778 vintage editions and 51 modern creations to choose from as well. If you’re looking for an old cut diamond collet 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. An old cut diamond collet from Hancocks, 1801 Jewels and Boucheron — each of whom created a beautiful version of this treasured accessory — is worth considering. An old european cut version of this piece has appeal, but there are also old mine cut and round cut versions for sale. When shopping for an old cut diamond collet, you’ll find that there are less available pieces for unisex or men today than there are for women.
How Much is an Old Cut Diamond Collet?
Prices for an old cut diamond collet can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $550 and can go as high as $513,053, while this accessory, on average, fetches $7,096.
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.
Questions About Old Cut Diamond Collet
- 1stDibs ExpertMay 5, 2023How 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.
- How old are mine cut diamonds?1 Answer1stDibs ExpertApril 5, 2022Mine 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, 2021Because 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, 2021Yes, 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, 2021Old 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.
- 1stDibs ExpertFebruary 22, 2021Although 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, 2022Jewelry 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.
Roman Malakov DiamondsMarch 22, 2021Like 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.