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Art Deco 2 Carat Diamond Three-Stone Engraved Ring
Located in Napoli, NA
A Classic from 1930s. Old mine cut Diamond Yellow and white gold handmade ring. It features three
Category

Early 20th Century Art Deco Three-Stone Rings

Materials

Diamond, 18k Gold

Victorian 0.75 Carat Diamond and Ruby Heart Pendant, circa 1880s
Located in London, GB
set flowers. The principle old cut diamond is 0.25 carat, while the bouquet of flowers to the right
Category

Antique 1880s Unknown Victorian Pendant Necklaces

Materials

Diamond, Ruby, 15k Gold, Silver

Antique Victorian 15.00 Carat Diamond Necklace
Located in New York, NY
Finely crafted in silver over gold with Old European and Old Mine cut Diamonds weighing
Category

Antique Late 19th Century Victorian Pendant Necklaces

Materials

Diamond, Gold, Silver

Victorian Diamond 1.50 Carat Five-Stone Gold and Silver Ring
Located in Napoli, NA
A stunning timeless diamond band ring set with five old mine cut shiny and sparkly Diamonds total
Category

Antique Early 1900s European Victorian Band Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold, Silver

Victorian 1910 Crescent moon in 18kt rose Gold with 2.80 carats in Diamonds
Located in Aventura, FL
total of 22 old mine Diamonds, weighing approximately 2.70 carats. Each Diamond is meticulously set
Category

Vintage 1910s Brooches

Materials

Diamond, White Diamond, Pearl, Gold, 18k Gold, Rose Gold

Victorian Era, Silver, 15 Karat Gold, Natural Pearl, and Diamond Brooch Necklace
Located in Brisbane City, QLD
accented with 6 old mine cut and 6 rose cut diamonds. Each of these stones is calculated to be of G/H
Category

Antique 19th Century English Victorian Brooches

Materials

Diamond, Natural Pearl, Gold, 15k Gold, Yellow Gold, Silver, Sterling Si...

GIA Platinum 18K Blue Sapphire Diamond Huge Ring Unheated Ceylon Mine 8.27 Cts
Located in Sylvania, GA
Sparkling Old Mine Cut Diamonds VS-SI Clarity and F-G Color: 3.32 Carats Official GIA Identification and
Category

Antique 19th Century Victorian Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum, 18k Gold

Art Deco Paraiba Type Bluish-Green Cushion Cut Tourmaline with Old European Halo
Located in Addison, TX
carats by calculation Diamond Details: Shape: Old European Brilliant Cut Count: Twelve (12) Weight
Category

Early 20th Century Art Deco Fashion Rings

Materials

Diamond, Tourmaline, Platinum

Antique Victorian GIA Certified 2.17 Carat Cluster Engagement Ring
Located in Los Angeles, CA
Victorian era ring (circa 1860) features a center stone 2.17 Ct. Old Mine Cut Diamond. Surrounded by 16 Old
Category

Antique Mid-19th Century Victorian Engagement Rings

Materials

Diamond, 15k Gold, Silver

Georgian 1830 Diamond Rivière Necklace
Located in Amsterdam, NL
A 14 or 15 carat yellow gold Gergian necklace with 48 old mine cut diamonds (app. 26 carat in
Category

Antique 1830s Link Necklaces

Materials

Diamond, 14k Gold, Silver

Antique Thai Sapphire Diamond Engagement Ring
Located in Chicago, IL
mine cut diamonds (VS1-VS2 clarity, average – K color). The sapphire and diamond cluster measures 15 x
Category

Vintage 1910s Cluster Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, Platinum

Vintage Diamond Three-Stone Gold Ring
Located in Napoli, NA
A Classic model from 1960s. Old mine cut Diamond 18k gold handmade ring. It is set with three old
Category

Early 20th Century Three-Stone Rings

Materials

Diamond, Gold, 18k Gold

Large Antique 19th Century Diamond Pearl Sunburst Pendant
Located in Chicago, IL
(1 13/16 in.) Depth is 15 mm (9/16 in.) Estimated total diamond weight is 5.20 carats. Sold
Category

Antique Mid-19th Century Victorian Drop Necklaces

Materials

Diamond, Pearl

Victorian 1890s Diamond Horseshoe Silver Gold Brooch
Located in Los Angeles, CA
Victorian 1890s horseshoe diamond brooch. The design features twenty-one old mine-cut diamonds
Category

Antique 1890s Victorian Brooches

Materials

Diamond, 15k Gold, Silver

Victorian 3 Carat Diamond Gold Ring
Located in Napoli, NA
. The ring features a center 2.80 carat old mine cut diamond L color IF, Framing the center diamond are
Category

Antique Late 19th Century Victorian Engagement Rings

Materials

Diamond, 18k Gold

Original Antique Edwardian Diamond Necklace Pendant Lavalier Platinum circa 1900
Located in Santa Barbara, CA
carat of twinkling old mine and rose cut diamonds, the lavalier features two articulating settings that
Category

Early 20th Century Edwardian Drop Necklaces

Materials

Diamond, Platinum

Antique Garnet Diamond Platinum Cluster Ring
Located in Chicago, IL
chunky old mine cut diamonds. The diamonds are bright white and very sparkly. Estimated total diamond
Category

Early 20th Century Edwardian Cocktail Rings

Materials

Diamond, Garnet, Platinum

Vintage Russian Demantoid Diamond Engagement Ring
Located in Chicago, IL
sparkling old mine, old European and early modern brilliant cut diamonds. Estimated total diamond weight is
Category

Mid-20th Century Russian Cluster Rings

Materials

Diamond, 14k Gold

Art Deco 4 Carat Diamond Platinum Brooch
Located in Miami, FL
Platinum Art Deco brooch featuring 15 old mine cut diamonds weighing approximately 4cts total G-I
Category

20th Century American Art Deco Brooches

Materials

Diamond, White Diamond, Platinum

Victorian Star and Mood Diamond Brooch, circa 1870
Located in London, GB
0.60 carats. Either side you have two fabulous 0.50 carat old cut diamonds, and the others continue up
Category

Antique Early 1900s Unknown Brooches

Materials

Diamond, 15k Gold, Silver

Victorian 1.05ct Diamond Heart Pendant, c.1880s
Located in London, GB
around an old cut diamond of 0.15 carat which is surrounded by multiple stones of various sizes
Category

Antique 1880s Unknown Victorian Pendant Necklaces

Materials

Diamond, 15k Gold, Silver

Victorian Diamond and Pearl Bangle, c.1880s
Located in London, GB
centre of the flower is a claw set, old cut diamond weighing 0.10 carat. The diamond has an estimated
Category

Antique 1880s Unknown Victorian Bangles

Materials

Diamond, Pearl, 15k Gold

Victorian 3.50ct Diamond Crescent Moon Brooch, c.1850s
Located in London, GB
entirely by hand in the 1850s. Gemstone: Diamond Carat Weight: 3.50 Stone Shape: Old Cut Colour: G-H
Category

Antique 1860s Unknown Victorian Brooches

Materials

Diamond, 15k Gold, Silver

French Art Deco Diamond White Gold and Platinum Clip Brooch
Located in London, GB
adorned with 60 diamonds in total – 45 old cut and 15 rose cut diamonds. The total diamond carat weight is
Category

Vintage 1920s French Art Deco Brooches

Materials

Diamond, White Diamond, 18k Gold, White Gold, Platinum

Art Deco Yellow Gold with Platinum Diamond Solitaire, circa 1930s
Located in Addison, TX
setting vintage ring featuring a warm colored old miner cut diamond weighing in at .38 carats. . Stunning
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Diamond

Antique Rare Tiffany Co. Diamond and Ruby Brooch
By Tiffany Co.
Located in Chicago, IL
This rare foliate brooch by Tiffany and Co. features 15 old mine cut diamonds weighing
Category

Antique 19th Century Late Victorian Brooches

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Outstanding 5.50 Carats Diamonds Silver Gold Ring
Located in Napoli, NA
bigger set in the middle The fine selection of old mine cut Diamonds comprises 8 stone in all – the
Category

Vintage 1950s Italian Neoclassical Band Rings

Materials

Diamond, 18k Gold, Silver

1940s Turquoise and Diamond Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
An impressive vintage 0.75 carat turquoise and 0.33 carat diamond, 15 karat yellow gold bar brooch
Category

Vintage 1940s Unknown Brooches

Materials

Diamond, Turquoise, 15k Gold, Yellow Gold

Art Deco 14K White Gold and Diamond Ring
Located in NEW ORLEANS, LA
old mine cut diamonds that weigh approximately 0.50 carats. The color of the diamonds is G-H, and the
Category

20th Century Unknown Art Deco Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Retro 1.80 Carat Diamond Gold Band Pave Ring
Located in Napoli, NA
A Beautiful Retro band ring hand made in 18k White Gold and set with 3 large Old mine Cut Diamonds
Category

Mid-20th Century Retro Band Rings

Materials

Diamond, 18k Gold

Antique Russian 7 Carat Diamond Gold Cluster Pendant Brooch
Located in Chicago, IL
sparkling bright white old mine cut diamonds. Estimated total diamond weight about 7 carats. The
Category

Antique Late 19th Century Russian Victorian Drop Necklaces

Materials

Diamond

Victorian Pearl Diamond Stud Single Earring 14K Gold Antique Original 1880 s
Located in Dearborn, MI
) .15 Carat Diamond Weight Shape: Old Mine Cut Color: F-G (Near Colorless) Clarity: VS (No Visible
Category

Antique 1880s Victorian Stud Earrings

Materials

Diamond, Pearl, 14k Gold, Yellow Gold

Art Deco 10K White Gold Sapphire and Diamond Filigree Bracelet
Located in Cape May, NJ
Era: Art Deco Composition: 10K White Gold Primary Stone: Old Mine Cut Diamond Carat Weight: .06
Category

Vintage 1920s Art Deco Retro Bracelets

Materials

Diamond, Blue Sapphire, 10k Gold, White Gold

Gold and Diamond Buckle Ring
Located in New York, NY
further information) Materials: 15 Old European- and old mine-cut diamonds (approximate total weight 1.85
Category

Vintage 1940s Retro Cocktail Rings

Materials

Diamond, White Diamond, 18k Gold, Gold

Victorian 2.50 Carat Natural Ruby Diamond Gold Cluster Ring
Located in Napoli, NA
weighing 2.50 carats of outstanding color, light and clarity, surrounded by 9 Old Mine cut Diamonds each
Category

Antique 1890s English Late Victorian Cluster Rings

Materials

Diamond, Ruby, 18k Gold

Art Deco White Gold Diamond Etched Band Square Head Solitaire Engagement Ring
Located in Addison, TX
WOW! This Art Deco solitaire is simple elegance! Featuring a .03 carats old minor cut diamond in
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, White Gold, 14k Gold

Art Deco Two-Tone 14K Yellow Gold and 18K White Gold .95 Carat Three-Stone Ring
Located in Addison, TX
: 4.55mm Center Diamond Details: Shape: Old Chunky Cut Carat Weight: Aproc 0.25 Ct Color: L Clarity
Category

Vintage 1920s Unknown Art Deco Three-Stone Rings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Antique Victorian Seed Pearl and Diamond Yellow Gold Cross Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning Victorian seed pearl and 0.06 carat diamond, 15 karat yellow gold 'cross' pendant; part
Category

Antique 1890s Unknown Victorian Pendant Necklaces

Materials

Diamond, Pearl, Gold, 15k Gold, Yellow Gold

Art Nouveau Diamond Enamel 14K Gold Antique Painted Flower Screw-Back Earrings
Located in Philadelphia, PA
maroon, white, and pink enamel Minimal loss - centering prong set old mine cut diamonds Weighing
Category

Antique Early 1900s Art Nouveau Drop Earrings

Materials

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

Antique Russian 2.50 Carat Diamond Silver-Topped Gold Snowflake Earrings
Located in Chicago, IL
, VS-SI clarity) encircled by sparkling old mine cut diamonds (F-G-H color, mostly SI clarity). The
Category

Antique Late 19th Century Russian Victorian Dangle Earrings

Materials

Diamond

Diamond Sapphire 18 Karat Gold Pendant Lavaliere Antique Art Deco
Located in New York, NY
White Gold. The beautiful pendant has a central sparkling white diamond of approximately .15 Carat
Category

Early 20th Century Unknown Art Deco Pendant Necklaces

Materials

Diamond, Sapphire, 18k Gold

Late Edwardian-Early Art Deco Diamond and Onyx Filigree Pendant Necklace
Located in Santa Barbara, CA
-1915 Metal: Platinum topped 18k yellow gold 1 Old Mine cut & 11 Rose Cut; 0.30 carats total 5 French
Category

20th Century Edwardian Pendant Necklaces

Materials

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

Art Deco 14K White Gold Antique 1.12Ct Diamond Vintage Filigree Engagement Ring
Located in Addison, TX
1.03mm at shank Finger to Top of Ring: 7.75mm Center Diamond Details: Shape: Old Mine Cut Carat Weight
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Antique French Belle Époque Diamond 18 Karat Gold Toi et Moi Ring
Located in Beverly Hills, CA
One Antique French Belle Époque Diamond 18 Karat Gold Toi et Moi Ring. Featuring two old mine cut
Category

Vintage 1910s French Belle Époque More Rings

Materials

Diamond, Gold, 18k Gold, Platinum

Antique Emerald Pearl Diamond Garland Style Necklace
Located in Chicago, IL
, pearls, and rose cut diamonds. The principal emerald measures 9.23 x 8.44 x 6.77 mm. The emerald has a
Category

Early 20th Century Unknown Belle Époque Drop Necklaces

Materials

Diamond, Emerald, Pearl, 14k Gold, Silver

Antique Victorian 7.95 Carat Diamond and Yellow Gold Heart Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique Victorian 7.95 carat diamond and 15 karat yellow gold
Category

Antique 1890s Unknown Victorian Pendant Necklaces

Materials

Diamond, 15k Gold, Gold, Silver, Yellow Gold

Retro Diamond Set Golf Club Novelty Brooch Yellow Gold and Platinum
Located in London, GB
shaft of yellow gold and the grip is finished with the addition of nine grain set old mine cut diamonds
Category

Vintage 1940s British Retro Brooches

Materials

Diamond, Gold, 15k Gold, Yellow Gold, Platinum

Antique Victorian Diamond Ring 18k Yellow Gold Small Navette Sz 4 Fine Jewelry
Located in Torrance, CA
gold. 15 old mine cut diamonds total an estimated 0.75 carats (estimated at I-J color and SI1-I1
Category

Antique Late 19th Century American Victorian Cocktail Rings

Materials

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

Art Deco 2.60 Carat Burmese Ruby Diamond Gold Platinum Engagement Ring
Located in Chicago, IL
very fine natural non-heated Burma (Myanmar) ruby surrounded by old mine cut diamonds. The ring
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Ruby

Art Deco Sapphire Diamond Platinum Vintage Ring
Located in Chicago, IL
cut diamonds (G-H color, VS1-VS2 clarity). Total sapphire weight is 1.92 carats. Estimated combined
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Belle Epoque Certified Burma Ruby No Heat Diamond Engraved Gold Ring
Located in Napoli, NA
No Heat Ruby 1.29 carat, and surrounded by two colorless round old mine cut diamonds, 0,20 carats
Category

Vintage 1910s European Belle Époque Three-Stone Rings

Materials

Diamond, Ruby, Gold, 18k Gold, White Gold, Yellow Gold

Antique 8.66 Carat Sapphire Diamond Engagement Cluster Ring
Located in Chicago, IL
sparkling bright white old mine cut diamonds (G-H color, SI clarity). The ring is marked with maker’s
Category

Antique Late 19th Century Russian Victorian Cluster Rings

Materials

Blue Sapphire

Edwardian 2.89 Carat GIA Diamond Platinum Engagement Ring with Carved Bow Motif
Located in Addison, TX
Diamond Details: Shape: Old Mine Cut Carat Weight: 2.89 CT Color: N Clarity: VS2 GIA Diamond Grading
Category

Vintage 1910s Unknown Edwardian Engagement Rings

Materials

Diamond, Platinum

Arts Crafts 8.80 Carats No Oil Emerald Diamond Pearl Platinum 18 Karat Brooch
Located in Philadelphia, PA
of treatment. Accented by old mine cut diamonds bezel set throughout - weighing approximately 2.72
Category

Vintage 1910s Arts and Crafts Brooches

Materials

Diamond, White Diamond, Emerald, Pearl, 18k Gold, Yellow Gold, Platinum

Vintage Platinum and Diamond Long Filigree Ring Size 6.5 #16761
Located in Washington Depot, CT
diamonds and five old mine cut diamonds set in beautifully detailed platinum. Top of ring measures 25 mm x
Category

20th Century Engagement Rings

Materials

White Diamond, Platinum

GIA Colombian Emerald Diamond Pendant 14K Star of David Necklace VS 4.64 Carats!
Located in Sylvania, GA
EMERALDS AND DIAMONDS. NATURAL PEAR CUT 2.06 CARAT TRANSPARENT EMERALD. EMERALD IS CROWNED WITH 2.58
Category

Antique 19th Century Pendant Necklaces

Materials

Diamond, Emerald, 14k Gold

Edwardian 1905 Art Nouveau Necklace Platinum 18Kt Gold 15.12 Ctw Peridot Diamond
Located in Miami, FL
hexagonal kite step cut (16 x 15 x 9 mm) of a natural vivid intense green peridot of 12.47 carats. Diamonds
Category

Antique Early 1900s American Edwardian Drop Necklaces

Materials

Diamond, White Diamond, Peridot, Platinum

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15 Carat Old Mine Cut Diamond For Sale on 1stDibs

Find the exact 15 carat old mine cut diamond you’re shopping for in the variety available on 1stDibs. Frequently made of gold, yellow gold and 14k gold, this item was constructed with great care. Find an antique version now, or shop for 254 vintage or 2 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a 15 carat old mine cut diamond 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. Finding an appealing 15 carat old mine cut diamond — no matter the origin — is easy, but Estate Jewelry, Tiffany Co. and Andrew Clunn each produced a popular version that is worth a look. See these pages for an old mine cut iteration of this accessory, while there are also old european cut cut and round cut cut versions available here, too. If you’re browsing our inventory for a 15 carat old mine cut diamond, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 15 Carat Old Mine Cut Diamond?

The price for a 15 carat old mine cut diamond starts at $400 and tops out at $495,000 with these rings, on average, selling for $4,871.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

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 15 Carat Old Mine Cut Diamond
  • 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.