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Antique Victorian 2ct Diamond Horseshoe Pendant 14k Gold Platinum Old Mine
Located in Torrance, CA
(circa 1880s to 1900s). 15 old mine cut diamonds graduate in size and total an approx. 2 carats
Category

Antique Late 19th Century Unknown Victorian Pendant Necklaces

Materials

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

Old Mine Diamond Sapphire 18 Karat Gold Pendant Lavaliere Art Deco Necklace
Located in New York, NY
White Gold. The beautiful pendant has a central sparkling white old mine cut diamond of approximately
Category

Early 20th Century Unknown Art Deco Pendant Necklaces

Materials

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

Platinum 8.68 Carat Old European Cut Diamonds Convertible Pendant / Brooch
Located in Wallkill, NY
mine cut diamonds, Carats 5.0 (0.50-15 Pts each) Clarity VS/SI-2 Color G,H, I This is out of our
Category

Vintage 1930s Unknown Brooches

Materials

Diamond, 18k Gold, Platinum

Antique Lovers Knot Diamond and 15 Carat Gold Ring
Located in Chipping Campden, GB
old mine cut. Ring Size: K 1/2 or 5 1/2 Height Off Finger: 8mm Knot Diameter: 11mm Weight: 3g
Category

Antique Early 1900s British Edwardian Solitaire Rings

Materials

Diamond, Gold

Edwardian 1.71 Carat Old European Cut Diamond Platinum Shield Cocktail Ring
Located in Addison, TX
0.40ct Color: G Clarity: SI2 Side Diamond Details: Shape: Old Mine and Old European Cuts Carat Weight
Category

Early 20th Century Edwardian Fashion Rings

Materials

Diamond, Platinum

Old Cut Diamond Ruby 14 Karat Gold Retro Textured Men s Ring
Located in Miami, FL
Solid 14K Yellow Gold, The center diamond is an Old Cut Round Diamond of 0.95 cts, J-KColo, SI2-I1
Category

Vintage 1950s Retro Signet Rings

Materials

Diamond, Ruby, 14k Gold

Antique Old Cut Diamond, Ruby, Sapphire, Emerald and Pearl 15ct Gold Pendant
Located in London, GB
design, set with an old cut diamond in the centre weighing approximately 0.85ct in a rubover milgrain
Category

Antique 1890s English Late Victorian Pendant Necklaces

Materials

Diamond, Emerald, Pearl, Ruby, Sapphire, Gold, 15k Gold, Yellow Gold, Pl...

Art Deco Platinum Filigree 2.02 Ct Old European Cut Diamond Engagement Ring
Located in Addison, TX
Diamond Details: Shape: Old Mine Cut Carat Weight: 2.02 Ct Color: I Clarity: VS2 Accent Diamonds
Category

Antique Early 1900s Unknown Edwardian Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Yellow Gold Diamond Victorian Converted Pocket Watch Case Pendant 14k Mine.21ctw
Located in Greensboro, NC
Information Natural Diamonds Carat(s): .21ctw Cut: Mine Color: G - H Clarity: VS - SI Total Carats: .21ctw
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Amethyst Old European Cut Diamond Enamel Gold Ring
Located in New York, NY
Victorian era ring, measured to weigh approximately 15 carats. Amethysts of this color and saturation have
Category

Antique 1870s Victorian Cocktail Rings

Materials

Amethyst, Diamond, Gold, 14k Gold, Yellow Gold

Vintage Opal and Diamond 15 Carat Gold Ring
Located in Chipping Campden, GB
are two 15pt old mine cut diamonds held in square settings. Modelled in 15ct gold. Ring Size: P 7 1
Category

Vintage 1950s British Modern Three-Stone Rings

Materials

Diamond, Opal, 15k Gold

Vintage Diamond Pendant Necklace 1.05ct Old Euro Antique Victorian Brooch 14K
Located in Dearborn, MI
or Man-Made) 100% Natural .75 Carat Diamond Weight  Shape: Old Mine Cut Color: F-G (Near Colorless
Category

Antique Late 19th Century Victorian Pendant Necklaces

Materials

Diamond, 14k Gold

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

Mid-20th Century Art Deco Band Rings

Materials

Diamond, 18k Gold

Art Deco 2.50 Carat Diamond Three-Stone Gold Ring
Located in Napoli, NA
Charming Old mine cut diamond weighing 1.90 carat J color Vs2 and two smaller weighing each 0,30 ct, all
Category

Mid-20th Century Art Deco Three-Stone Rings

Materials

Diamond, Gold, 18k Gold

Art Deco Diamond 1.90 Carat Five-Stone Gold Ring
Located in Napoli, NA
A stunning timeless diamond band ring set with five old mine cut shiny and sparkly Diamonds total
Category

Mid-20th Century Art Deco Band Rings

Materials

Diamond, 18k Gold, Gold

Art Deco Diamond 1.90 Carat Five-Stone Gold Ring
Located in Napoli, NA
A stunning timeless diamond band ring set with five old mine cut shiny and sparkly Diamonds total
Category

Mid-20th Century Art Deco Band Rings

Materials

Diamond, Gold, 18k Gold

Victorian 2.25 Total Carat Diamond Crescent Pendant Necklace
Located in Narberth, PA
the front surface of the crescent are 15 old Mine Cut diamonds which rest within a shared prong
Category

Antique 1880s Unknown Victorian Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold, Sterling Silver, Platinum

Victorian 18 Carat Gold Sapphire and Diamond Three-Stone Ring
Located in Chipping Campden, GB
A superb victorian three-stone ring. Centrally set with a beautiful 20point old one cut diamond
Category

Antique 1890s British Victorian Three-Stone Rings

Materials

Diamond, Sapphire, Yellow Gold, Gold

Antique 10K Gold and Enamel Free Masons Masonic Fob with .50 Carat Diamond
Located in valatie, NY
old mine cut .05 carat diamonds, total weight .15 carats, and 9 garnets total weight .45 carats. Under
Category

Early 20th Century Unknown More Jewelry

Materials

White Diamond, Garnet, 10k Gold

1930s Art Deco 2.5 Carat Total Diamond Platinum Cluster Ring
Located in Hicksville, NY
millimeters Diamond Details: Cut: Old Mine, Old European Carat: 2.5 carat total weight (Quantity 19) Color: E
Category

Mid-20th Century Unknown Art Deco Cluster Rings

Materials

Diamond, Platinum

Victorian Diamond Snake Ring
Located in Hummelstown, PA
serpent glitters with 4 carats of old mine-cut diamonds, beautifully rendered in darkened silver over 15
Category

Antique 1890s English Cocktail Rings

Materials

Diamond, 15k Gold, Silver

Art Deco Colombian Emerald Diamond Ring
Located in Napoli, NA
mine cut Diamonds weighing 0.25 cts all together Hallmarked. Entirely hand crafted, circa 1930
Category

Mid-20th Century Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Vintage 14 Karat Rose Gold .62 Carat 5 Diamond Channel Antique Wedding Band
Located in Addison, TX
shank Finger to Top of Ring: 2.53mm Center Diamond Details: Shape: Old Mine Cut Carat Weight: Aprox
Category

Vintage 1920s Unknown Art Deco Band Rings

Materials

Diamond, Rose Gold

Victorian Diamond Yellow Gold Knot Hinged Bangle Bracelet English
Located in Los Angeles, CA
. SPECIFICATIONS: DIAMOND: one old mine-cut diamond weighing approximately 0.12 carat, approximately H color, SI
Category

Antique 1890s English Victorian Bangles

Materials

Diamond, 15k Gold

Platinum-Topped Gold-Backed Edwardian Diamond Horseshoe Pendant
Located in Venice, CA
This sparkling Edwardian pendant contains 25 Old Mine Cut diamonds with a border of milgrain work
Category

Antique Early 1900s Unknown Edwardian Pendant Necklaces

Materials

Diamond, Gold, 14k Gold, Platinum

Antique Diamond Seed Pearl Gold Heart Pendant Brooch
Located in New York, NY
has a bezel-set old mine-cut diamond with an approximate weight of 1.25 carats, and prong-set natural
Category

Antique Early 1900s English Brooches

Materials

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

14 Karat White Gold Vintage Art Deco Diamond Cocktail Ring
Located in Addison, TX
Details: Carat: approximately .15 Carats Shape: Old Mine Cut Color: I-J Clarity: SI1 - VS2 Diamond
Category

20th Century Unknown Art Deco Cocktail Rings

Materials

Diamond, 14k Gold, White Gold

Victorian 18 Karat Gold 6-Stone Diamond Band, #19007270, circa 1893
Located in Addison, TX
all old miner cut diamonds weighing in at .20 carats. The 18K white gold and diamond parings are sure
Category

Antique 1890s Victorian Band Rings

Materials

Diamond, White Gold, 18k Gold

Large Saint George and the Dragon 18K Gold, Diamond High Relief Locket on Chain
Located in New York, NY
1 old mine cut diamond .15 carats Marks: 18K, partial makers mark
Category

20th Century Modernist Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Art Deco Diamond Sapphire Engagement Ring .75ct French Cut Original 1930 s 18K
Located in Dearborn, MI
Created or Man-Made) 100% Natural .10 Carat Diamond Weight Shape: Old European Cut Color: G-H (Near
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Art Deco Diamond Sapphire Pendant Lavaliere 14 Karat White Gold Necklace
Located in New York, NY
14 Karat White Gold. The beautiful pendant has a central sparkling white old mine cut diamond of
Category

Early 20th Century Unknown Art Deco Pendant Necklaces

Materials

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

Victorian Diamond Bow Pendant
Located in Stamford, CT
mine cut diamonds. One of the nicest Victorian necklaces we have seen in years. 2 old mine cut
Category

Antique Late 19th Century Unknown Victorian Necklace Enhancers

Materials

Diamond, Platinum

Ruby and Diamond Locket, circa 1890
Located in London, GB
Ruby and diamond locket. A hexagonal locket set to centre with a cushion shape old mine diamond in
Category

Antique 1890s Victorian Pendant Necklaces

Materials

Diamond, Ruby, 15k Gold

Late Art Deco Citrine Drop Diamond Gold Necklace
Located in Narberth, PA
detailed with 13 sparkling old Rose and Mine Cut diamonds, with the largest bezel set at the center. It's a
Category

Vintage 1930s Art Deco Drop Necklaces

Materials

Citrine, Diamond, 18k Gold, Platinum

Diamond Gold Snake Ring Circa 1900
Located in Chicago, IL
Mine cut Cushion Diamond of approximately .15 Carat. Top measuring 1/2 X 5/8 inch. Finger size = 8
Category

Antique Early 1900s Unknown Victorian Cocktail Rings

Materials

Diamond, 14k Gold

Edwardian Seed Pearl and Diamond Choker
Located in New York, NY
diamond spacers set with 56 old mine-cut diamonds with an approximate total weight of 2.80 carats. Circa
Category

Antique Early 1900s Unknown Edwardian Choker Necklaces

Materials

Diamond, Natural Pearl, 15k Gold, Platinum

Victorian Sapphire Diamond Engagement Ring
Located in Napoli, NA
approx. 5.00 carat and surrounded by 0.70 ct of old mine cut Diamonds graded I color Vvs2, all set in 18k
Category

Antique Late 19th Century Victorian Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, 18k Gold

Fine V Rare Art-Deco Rolex 18K Gold, Diamond, Sapphire Cocktail Ladies Watch
By Rolex
Located in MELBOURNE, AU
-mine diamonds & Royal Blue baguette cut sapphires to the corners, which perfectly compliment the
Category

Vintage 1930s Swiss Art Deco Wrist Watches

Materials

Diamond, Sapphire, 18k Gold

English Edwardian Sapphire Diamond Gold Horseshoe Brooch
Located in New York, NY
old mine-cut diamonds with an approximate total weight of 1.05 carats, and 12 rose-cut diamonds with
Category

Antique Early 1900s English Edwardian Brooches

Materials

Diamond, Sapphire, 15k Gold

Platinum Deco Diamond and Blue Sapphire 3 Stone Ring
By Non Branded
Located in Lexington, KY
= .60 twt roud cut, blue sapphire 12= .40 twt old mine cut diamonds 10= .15 twt single cut diamonds
Category

Vintage 1920s Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Carrington Co. London Victorian Diamond Silver Top Gold Bandeau Necklace
By Carrington Co
Located in New York, NY
circle which is set with approximately .15 carat old-mine and old-European cut diamonds. The necklace
Category

Antique 1880s English Choker Necklaces

Materials

Diamond, 18k Gold, Sterling Silver

Art Deco 18 Karat Gold 2.02 Carat No Heat Red Sapphire Victorian Filigree Ring
Located in Addison, TX
of Stone Measurement: 4.06mm Center Diamond Details: Shape: Old Mine Cushion Cut Carat Weight: 2.02
Category

Vintage 1920s Unknown Art Deco Fashion Rings

Materials

Diamond, Sapphire, Yellow Gold

Victorian Diamond Opal Ruby Gold Bee Brooch
Located in Los Angeles, CA
opal head crowned by rose-cut diamonds, and old mine-cut diamonds over the abdomen and wings, the
Category

Antique 1890s Victorian Brooches

Materials

Diamond, Opal, Ruby, 14k Gold, Gold

Natural Pearl Diamond Sapphire Victorian Gold Ring
Located in Los Angeles, CA
7.77 mm, set within a halo comprising cushion shaped sapphires alternating with old mine cut diamonds
Category

Antique 1880s Victorian Cluster Rings

Materials

Diamond, Natural Pearl, Blue Sapphire, 15k Gold

Antique Victorian Opal and Ruby Necklace, circa 1890s
Located in London, GB
, thirteen natural seed pearls sized approximately 2-3mm each and thirteen old mine cut diamonds with an
Category

Antique 1890s English Victorian Choker Necklaces

Materials

Diamond, Opal, Pearl, Ruby, Gold, Silver

Bailey Biddle Banks 1905 Edwardian Belle Epoque Convertible Brooch in Platinum
By Bailey, Banks Biddle
Located in Miami, FL
, pearls and white metals like platinum and white gold. Diamonds often had an Old Mine or European cut and
Category

Antique Early 1900s American Edwardian Pendant Necklaces

Materials

Diamond, White Diamond, Platinum

Signet Ring Helios Ancient Intaglio Jasper solid 21K Gold Ø US7.75/ 6.4gr
Located in SE
diamonds can chip or stones fall out if proper care is not taken. WEIGHT OF THE STONES The cuts of the
Category

Antique 19th Century European Aesthetic Movement Signet Rings

Materials

Jasper, 22k Gold

A fine Victorian diamond cluster necklace
Located in London, GB
from the centre, each centrally-set with an old mine cut diamond surrounded by twelve smaller old cut
Category

Antique 1880s British Victorian Link Necklaces

Materials

Diamond, Rose Gold, Silver

15 Carat Yellow Gold Old Mine Cut and Seed Pearl Vintage Ring
Located in Hamilton, AU
Carefully crafted in 15 Carat rose gold is this ever so sweet rings features a bright star set old
Category

Early 20th Century British Victorian Signet Rings

Materials

Diamond, Pearl, Yellow Gold, 15k Gold

Antique 13.2 Carat Old Mine Cut Diamond Riviere Necklace
Located in Sale, Cheshire
A spectacular rivière necklace set with over 13 carats of chunky old mine cut diamonds. The stones
Category

Antique 19th Century English Victorian More Necklaces

Materials

White Diamond, 9k Gold, Silver

Antique Victorian Five-Stone Old Mine Cut Diamond Gold Ring
Located in Sale, Cheshire
elegant trifurcated shoulders and modelled in 15 karat gold. STONES Old Mine Cut Diamonds - total carat
Category

Antique Mid-19th Century English Victorian Band Rings

Materials

White Diamond, 15k Gold

Antique Georgian Old Mine Cut Diamond Double-Row Ring
Located in Sale, Cheshire
Old Mine Cut Diamonds - total carat weight approx. 1.12ct RING SIZE 8 US MEASUREMENTS Width at head
Category

Antique Early 19th Century English Georgian Band Rings

Materials

White Diamond, 15k Gold, Silver

Victorian 1.20 Carat Old Mine Diamond Trilogy Engagement Ring
Located in Napoli, IT
Diamond is an old mine Cushion Cut Diamond estimate .80 Ct on setting rated as H/I VVS : top white
Category

Early 20th Century Victorian Engagement Rings

Materials

Diamond, 18k Gold, Silver

Antique Round Victorian Rose Cut Diamonds, Old Mine Cut Sapphire Cluster Pendant
Located in Joelton, TN
old Rose Cut Diamond, weighing .15 carats, radiates at the heart of the pendant. Surrounding Diamonds
Category

Antique Mid-19th Century European Victorian Pendant Necklaces

Materials

Diamond, Sapphire

Art Deco 1.40 Carat Colombian Emerald 1.20 Carat Old Cut Diamond Ring
Located in Napoli, IT
centre set with five natural Emeralds - Colombian origin – intense luscious green old mine cut – this
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

Antique, 19th Century, Georgian, 15 Carat Yellow Gold, Emerald and Diamond Ring
Located in Rochford, Essex
graduating old mine cut diamonds all set in a rubover style setting. This ring has all the charm and
Category

Antique Early 19th Century British Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold, Silver

Antique Late Victorian Onyx, Pearl and Diamond Bangle in 15 Carat Yellow Gold
Located in Yorkshire, West Yorkshire
. Diamond details: Cut; Old Cut Carat; 1.00ct total Condition: Very Good, slightest signs of wear due to
Category

Antique Late 19th Century British Victorian Bangles

Materials

Diamond, Onyx, Gold, 15k Gold, Yellow Gold

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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.