Old European Cut Diamonds
to
972
11,092
10,929
5,909
4,697
3,127
19,533
2,768
2,720
1,251
1,241
45
2,476
15,318
2,070
1,379
1,434
3,328
2,393
625
503
143
92
64
56
41
12,643
7,485
137
11080
1474
470
453
311
to
15
337
189
96
82
55
8,074
2,250
2,120
636
528
394
353
55
44
31
25
13
2
2
20,241
24
14,337
5,496
Sort By
Antique Art Deco 1920s 12.00 Carat Diamond and 3.00 Carat Sapphire Line Bracelet
Located in New York, NY
Finely crafted in platinum with 7 Old European cut Diamonds weighing approximately a total of 5.00
Category
Vintage 1920s Link Bracelets
Materials
Diamond, Sapphire, Platinum
Antique Art Deco Platinum Old European Diamond Engraved Engagement Ring
Located in Great Neck, NY
engagement ring is crafted in platinum. The center holds a beautiful white old European cut diamond and is
Category
Vintage 1920s Unknown Art Deco Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco Platinum Old European Diamond Baguette Engagement Ring - GIA
Located in Great Neck, NY
gorgeous Art Deco old European cut diamond engagement ring is crafted in platinum. This beautiful ring
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Platinum
Circa 1930s Art Deco Onyx
Diamond GIA 1.26ct Old European Brilliant Ring
Located in Hicksville, NY
grams
Center Diamond Details:
GIA Report#: 6234063629
Weight: 1.26ct total weight
Cut: Old European
Category
Vintage 1930s Unknown Art Deco Engagement Rings
Materials
Diamond, Onyx, Platinum
5.06 Carat Old mine Cut Diamond Engagement Ring In Platinum, GIA Certified.
By MOGULDIAM INC
Located in New York, NY
White Old European Cut Diamond Engagement Ring beautifully handcrafted in platinum.
This elegant
Category
Vintage 1950s American Engagement Rings
Materials
Diamond, Platinum
$54,400 Sale Price
20% Off
Mid-Century Diamond Engagement Ring
Located in Denver, CO
Crafted in the 1950s, this mid-century engagement ring is designed around an Old European-cut
Category
Vintage 1950s Retro Engagement Rings
Materials
Diamond, White Gold, 14k Gold
Antique Art Deco Platinum Old European Diamond Floral Engagement Ring - GIA
Located in Great Neck, NY
gorgeous Art Deco old European cut diamond floral engagement ring is crafted in platinum. The ring features
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Platinum
1920
s Vintage Art Deco Platinum 18K Yellow Gold Old European Diamond Tie Bar
Located in Los Angeles, CA
.
Stones- 25 Antique Old European Cut Diamonds G-H-I Color VS1-SI1 Clarity Approximately 2.25 Carats.
Art
Category
Vintage 1920s Art Deco Brooches
Materials
Diamond, 18k Gold, Yellow Gold, Platinum
Art Deco Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
Center Stone: Old European Cut Diamond
Weight: Approximately .86 Carat
Color: N
Clarity: SI1
Accent
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Art Deco Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
Center Stone: Old European Cut Diamond
Weight: Approximately .86 Carat
Color: N
Clarity: SI1
Accent
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco 1920s 2.20 Carat Old Mine Cut Diamond Engagement Ring
Located in New York, NY
, SI2 clarity.
The ring features small Old European cut Diamonds on the setting weighing a total of
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Platinum
Art Deco 18K White Gold 1.5ctw Old Cut Diamond and Pearl Openwork Panel Ring
Located in Staines-Upon-Thames, GB
An Art Deco diamond, pearl, and white gold ring, comprising one large old European cut diamond
Category
Vintage 1920s Art Deco Cocktail Rings
Materials
Diamond, Pearl, 18k Gold, White Gold
$5,681 Sale Price
36% Off
Old Cut Diamond Platinum Engagement Ring
Located in Chicago, IL
six pre-1900 and early 1900s chunky old mine and old European cut diamonds (1.24 cts total). Total
Category
Vintage 1930s Modern Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco 1930s 12.80 Carat Diamond Openwork Brooch
Located in New York, NY
Finely crafted in platinum with an Old European cut Diamond at the center weighing approximately
Category
Vintage 1930s Art Deco Brooches
Materials
Diamond, Platinum
Art Deco Old European Diamond 14 Karat White Gold Column Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing 0.29 carat - J color with VS2 clarity
Bead set in a
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Gold, 14k Gold, White Gold
J. Birnbach GIA Certified 2.69 Carat Old European I SI2 Three-Stone Diamond Ring
By J. Birnbach
Located in New York, NY
Step into timeless elegance with this GIA Certified 2.69 Carat Old European Cut Diamond Three-Stone
Category
21st Century and Contemporary American Contemporary Three-Stone Rings
Materials
Diamond, Platinum
Art Deco Old European Diamond Platinum Fleur-De-Lis Solitaire Engagement Ring
Located in Philadelphia, PA
Centering and old European cut diamond weighing approximately 1.42 carats - K color with SI1
Category
Vintage 1930s Art Deco Solitaire Rings
Materials
Diamond, Platinum
Art Deco 1.27 CTW European Diamond Sapphire 18 Karat White Gold Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing approximately 1.20 carat - K color with SI2 clarity
Category
Vintage 1930s Art Deco Pendant Necklaces
Materials
Diamond, Sapphire, Gold, White Gold
Antique Victorian Gold and 2.00 Carat Diamond Flowers Brooch Pendant
Located in New York, NY
Finely crafted in 18k yellow gold with a center Old European cut Diamond weighing approximately
Category
Antique Late 19th Century Victorian Brooches
Materials
Diamond, 18k Gold
Art Deco 1.20 Carat Old European Fancy Yellow Diamond Platinum Engagement Ring
Located in Los Angeles, CA
GIA report certified fancy yellow 1.20-carat old European-cut diamond and platinum Art Deco
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Yellow Diamond, Platinum
Exceptional 2.78ct Old Euro 18k White Gold Diamond Ring
Located in San Francisco, CA
report #5172671042). A remarkable Old European Cut diamond engagement ring, meant to last a lifetime.
Category
21st Century and Contemporary American Art Deco Engagement Rings
Materials
Diamond, 18k Gold, White Gold
1.94ct Old Euro Cut Diamond 1.24ctw RBC Diamond 10.5g Platinum Deco Style Ring
Located in St. Petersburg, FL
1.94ct Old European Cut Diamond 1.24ctw Accent Diamonds 10.5g Platinum Deco Style Ring Size 7
Category
20th Century American Art Deco Fashion Rings
Materials
Diamond, Ruby, Platinum
Platinum and 1.4 Carats Old European Diamond Art-Déco Ring, circa 1925
Located in Zurich, CH
, geometric design, centering upon 1 old European cut diamond of circa 1.4 carats, in mille-grain setting
Category
Vintage 1920s Art Deco Solitaire Rings
Materials
Diamond, Platinum
Art Deco Vintage 2 Old Brilliant Cut diamond platinum cocktail ring
By Antinori Fine Jewels
Located in Chicago, IL
Presenting a stunning Old European Brilliant & Baguette Cut Diamond Engagement Ring with a total
Category
Vintage 1940s Unknown Art Deco Solitaire Rings
Materials
Diamond, Palladium, Platinum
$52,000 Sale Price
20% Off
Art Deco 1.96 CTW Old European Diamond Platinum Marquise Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing 1.46 carat - L color with VS2 clarity
Set in a
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Old European Diamond Ring Blue Enamel 14K White Gold
By Estate Jewelry
Located in East Brunswick, NJ
Old European cut diamond is .75 carat of VS1 clarity and G color!
It is accented with 18 mine cut
Category
20th Century Solitaire Rings
Materials
Diamond, White Gold, Enamel
GIA Certified 2.20 Carat Round Brilliant Cut Diamond Engagement Old Cut
By Antinori Fine Jewels
Located in Chicago, IL
This absolutely breathtaking 2.20 carat old European cut diamond is striking in size, exceptionally
Category
2010s Unknown Art Deco Solitaire Rings
Materials
Diamond, Platinum
$40,000 Sale Price
20% Off
Necklace with old mine cut diamonds up to 1.90ct 18k white gold and platinum
Located in The Hague, ZH
/H
clarity: SI
- 36 x 1.5 mm - 2.6 mm old European cut diamond, approximately 1.10 carats in total
Category
Vintage 1910s Dutch Art Nouveau Choker Necklaces
Materials
Diamond, 18k Gold, White Gold, Platinum
Art Deco Old European Diamond Platinum Antique Scroll Filigree Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 1.62 carats - H color with SI1 clarity
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Platinum
1.80 Carat Old European Diamond Gold Open Work Platinum Heart Pendant Necklace
Located in Stamford, CT
top, that has an intricate vine type of design and accented with 60 round Old European cut diamonds
Category
Early 20th Century Pendant Necklaces
Materials
Diamond, 14k Gold, Yellow Gold, Gold, Platinum
Art Deco Old European Diamond Enamel Platinum Toi-Et-Moi Vintage Unisex Ring
Located in Philadelphia, PA
Centering two old European cut diamonds weighing approximately 2.00 carats total
I color with SI1
Category
Vintage 1930s Engagement Rings
Materials
Diamond, Platinum
Antique Edwardian 18K Gold and Platinum Toi et Moi Old European Diamond Ring
Located in Great Neck, NY
incredible Edwardian Toi et Moi old European cut diamond ring is crafted in 18k yellow gold and platinum
Category
Antique Early 1900s Edwardian Cocktail Rings
Materials
Diamond, Gold, 18k Gold, Yellow Gold, Platinum
Art Deco Old European Diamond 18K White Gold Vintage Solitaire Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.78 carat - I color with VS2 clarity
Category
Vintage 1930s Art Deco Solitaire Rings
Materials
Diamond, Gold, 18k Gold, White Gold
3.75 Carat Art Deco Old European Diamond Platinum Gold Brooch Pendant
Located in Stamford, CT
Art Deco solid Platinum and 14k white gold Diamond brooche. All handmade set with Old European cut
Category
Early 20th Century Brooches
Materials
Diamond, White Diamond, Gold, 14k Gold, White Gold, Platinum
Antique Victorian 15K Gold
Silver 2.82ctw Old Cut Diamond Brooch
Pendant
Located in Staines-Upon-Thames, GB
old European cut diamond, held within a pinched silver setting. The large diamond is bright, white
Category
Antique 1890s Victorian Brooches
Materials
Diamond, 15k Gold, Yellow Gold, Silver
$7,333 Sale Price
36% Off
Antique Edwardian 15K Gold 0.65ctw Old Cut Diamond Cluster Drop Necklace
Located in Staines-Upon-Thames, GB
An Edwardian diamond, platinum? And yellow gold necklace, comprising one large old European cut
Category
Early 20th Century British Edwardian Pendant Necklaces
Materials
Diamond, 15k Gold, 9k Gold, White Gold, Yellow Gold
$2,973 Sale Price
20% Off
Antique Old European Diamond Engagement Ring (Approx 1.10-Carats) Platinum
Located in New York, NY
accented with old European cut diamonds and calibre-cut sapphires. At its heart lies a mesmerizing Old
Category
21st Century and Contemporary Unknown Art Deco Cocktail Rings
Materials
Diamond, Sapphire, Platinum
Art Deco 0.70 Carat Old Euro Diamond Hexagonal 20K White Gold Engagement Ring
Located in Los Angeles, CA
Art Deco Circa 1920
0.70ct old European cut diamond
D-F VS
Fine hand engraved symbols
Mill grained
Category
Early 20th Century Art Deco Engagement Rings
Materials
Diamond, White Gold
0.80 Carat Old Cut Diamond Art Deco Platinum Engagement Ring, circa 1930s
Located in London, GB
Beautiful handmade Art Deco engagement ring set with an old European cut diamond weighing 0.80
Category
Vintage 1930s English Art Deco Engagement Rings
Materials
Diamond, Platinum
Old European Diamond Square Ring, Antique Diamond (Approx. 1.50-Carats) Platinum
Located in New York, NY
This exquisite antique engagement ring showcases a Approx. 1.50-Carats old European cut diamond at
Category
Vintage 1910s Edwardian Engagement Rings
Materials
Diamond, Platinum
Art Deco Star Form Diamond
French Cut Sapphire Ring in Platinum
Located in Boston, MA
An Art Deco style old European cut diamond, and French cut sapphire star form ring in platinum
Category
Early 20th Century Art Deco Engagement Rings
Materials
Diamond, Sapphire, Platinum
Edwardian 0.45 CTW Old European Diamond Platinum Bow Basket Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.45 carat - G color with VS2 clarity
Category
Antique Early 1900s Edwardian Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco 1920s 2.50 Carat Old Mine Cut Diamond Dinner Ring
Located in New York, NY
-P color, VS clarity.
The ring features smaller Old Mine and Old European cut diamonds weighing
Category
Vintage 1920s Art Deco Cocktail Rings
Materials
Diamond, Sapphire, Platinum
Art Deco Five Stone Diamond Navette Dinner Ring
Located in Denver, CO
Crafted in the 1920s from platinum, this stunning Navette band is set with an Old European cut
Category
Vintage 1920s Unknown Art Deco More Rings
Materials
Diamond, Platinum
1.02 Carat Total Old European Diamond 1930s Art Deco Platinum Engagement Ring
Located in Santa Monica, CA
A 1930s Art Deco engagement ring featuring 0.72ct Old European cut diamond from the antique fine
Category
Vintage 1930s American Art Deco Engagement Rings
Materials
Diamond, Platinum
Art Deco Old European Diamond Black Onyx Heart Shield Ring Yellow Gold
Located in New York, NY
shield form Black Onyx gem that is adorned with a sparkling white Old European Cut Diamond set in a
Category
Early 20th Century Unknown Art Deco Bridal Rings
Materials
Diamond, Onyx, Gold, 10k Gold, Yellow Gold
1920
s Art Deco 1.46 Ctw Diamond Halo Engagement Ring in Platinum
Located in Boston, MA
A high fashion Art Deco period old European cut diamond halo engagement ring in platinum.
Centered
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Art Deco 2.46 CTW Old European Diamond Platinum Lotus Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing 2.24 carats total - F color with SI1 clarity
Prong
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
EGL Certified 1.00 Carat Old European Art Deco Diamond Platinum Engagement Ring
Located in Stamford, CT
beautiful radiance.
1 old European cut diamond, approx. total weight 1.00cts, K – L, VS2, Depth: 57.9
Category
Early 20th Century Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco Platinum Old European Diamond and Emerald Engagement Ring - GIA
Located in Great Neck, NY
old European cut diamond that has a GIA report. The diamond has natural Colombian emeralds and old
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Emerald, Platinum
Antique 15 Carat Rose Gold Bangle with Old European Diamond and Sea Water Pearls
Located in London, GB
and clasp. In total, there are four natural sea water pearls.
15 x Old European cut diamonds
Category
Antique Early 1900s British Victorian Bangles
Materials
Diamond, Pearl, Natural Pearl, Rose Gold
Art Deco French 2.21 CTW Old European Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
Centering an old European cut diamond weighing 1.96 carats - J color with SI2 clarity
Set with
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Antique 15K Yellow Gold
Platinum Pearl and Old Cut Diamond Bow Necklace
Located in Staines-Upon-Thames, GB
pearl, three old European cut diamonds, and eight old single cut diamonds, set in platinum, backed in 15
Category
Early 20th Century British Belle Époque Pendant Necklaces
Materials
Diamond, Pearl, 15k Gold, Yellow Gold, Platinum
$3,028 Sale Price
20% Off
Old European Cut Three-Stone Diamond Engagement/Anniversary Ring
Located in Chicago, IL
a stunning Antique Old European Cut Three-Stone Diamond Engagement/Anniversary Ring set in 14K
Category
Vintage 1940s American Contemporary Engagement Rings
Materials
Diamond, White Diamond, Platinum
$16,000 Sale Price / set
20% Off
Art Deco Diamond Ring
Located in Bethesda, MD
This beautiful Art Deco ring features a center Old European Cut diamond that weighs .80 carats and
Category
Early 20th Century American Art Deco Cocktail Rings
Materials
Diamond, Platinum
$9,250
Floral Art Deco Old European Diamond
Ruby Engagement Ring in Platinum
Located in Boston, MA
carat old European cut diamond of H color and VS2 clarity set in a beaded bezel.
Framed by six petals
Category
Early 2000s Art Deco Engagement Rings
Materials
Diamond, Ruby, Platinum
Old European Diamond Earrings (GIA Approx. 0.60-Carats), Platinum
Located in New York, NY
These elegant diamond cluster earrings each feature a GIA-certified Old European cut diamond at the
Category
21st Century and Contemporary Art Deco Stud Earrings
Materials
Diamond, Platinum
- 1
- ...
Get Updated with New Arrivals
Save "Old European Cut Diamonds", and we’ll notify you when there are new listings in this category.
Old European Cut Diamonds For Sale on 1stDibs
Browse a vast assortment of old european cut diamonds for sale on 1stDibs. Frequently made of gold, platinum and 18k gold, these items were constructed with great care. Our selection of items includes 27405 vintage examples as well as 2052 contemporary versions. 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 Edwardian are consistently popular styles when it comes to old european cut diamonds. Many examples in our inventory of these items are appealing no matter their origins, but Single Stone, Tiffany
Co. and Luigi Ferrara produced popular versions that are worth a look. There are many old european cut, round cut and old mine cut old european cut diamonds for sale. There aren’t many items for men in our collection of old european cut diamonds, as most of the options available are for women.
How Much are Old European Cut Diamonds?
Prices for old european cut diamonds can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $1,620,000, while old european cut diamonds, on average, fetch $5,705.
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 European Cut Diamonds
- 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.
- 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, 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.
- What is an old European diamond?1 Answer1stDibs ExpertApril 5, 2022An old European diamond is one that features an Old European gemstone cut. This type of cut became popular during the Art Deco period and has a round shape with 58 central facets. You'll find a variety of European cut diamond gemstone jewelry on 1stDibs.
- What is a European cut diamond?1 Answer1stDibs ExpertFebruary 22, 2021European cut diamonds were most popular from the late 19th century to the mid-20th century. They're quite brilliant in terms of shine quality and feature a large culet,small table and round shape.
- 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 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.
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.