Skip to main content

Antique Emerald Cut Diamond

to
83
953
583
1,113
1,113
474
421
246
111
94
65
63
62
60
40
31
26
23
11
8
8
7
6
6
6
6
4
3
2
2
2
2
1
1
1
1
1
1
1
1
1
1
15
9
5
4
3
Sort By
A Gold Emerald Diamond Heart Shape Pendant Watch C1840
Located in Mayfair, London, London
are over a carat of good quality old cut diamonds that surround the Emerald which is set to the front
Category

1840s Swiss Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Gold, 18k Gold

Victorian GIA Colombian Emerald Diamond Silver 14k Yellow Gold Cluster Ring
Located in Beverly Hills, CA
emerald is of Colombian origin. Accented by 18 old European and old mine cut diamonds with a total weight
Category

1880s Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Yellow Gold, Silver

Victorian 3ctw Emerald + 1.40ctw Diamond Cluster Ring
Located in Narberth, PA
emerald displays a stunning 3ctw Oval Cut emerald surrounded by a diamond border. The emerald's green hue
Category

1880s Unknown Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 15k Gold, Yellow Gold

Antique Russian Emerald Diamond Yellow Gold Ring
Located in Beverly Hills, CA
). It is made of yellow gold, and features a 4.65-carat oval faceted emerald framed with ten cushion cut
Category

Mid-19th Century Russian Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

Antique Victorian 14K Gold Colombian Emerald Diamond Engagement Ring - GIA
Located in Great Neck, NY
Beautiful Antique Victorian 14K Gold Colombian Emerald Diamond Engagement Ring - GIA. This gorgeous
Category

1890s Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Gold, 14k Gold, Yellow Gold

Victorian Emerald Diamond Dangle Earrings in Gold and Silver, Antique
Located in Beverly Hills, CA
and stamped) yellow gold and set with natural cushion cut emeralds and old rose cut diamonds. The
Category

Early 20th Century Unknown Victorian Antique Emerald Cut Diamond

Materials

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

Edwardian Columbian Emerald and Diamond Gold Heart Ring
Located in London, England
. With a pear shaped Columbian emerald and a matching pear cut diamond bordered in Old European cut
Category

Early 1900s Unknown Early Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

Antique English Emerald Diamond Hand Carved Gold Ring
Located in Carmel-by-the-Sea, CA
by two old European cut diamonds. These emeralds have a rich intensity not captured in the photos and
Category

Late 19th Century Victorian Antique Emerald Cut Diamond

Materials

Emerald, Diamond, 18k Gold

Single Strand Saltwater Natural Pearl Necklace with Emerald Diamond and Peridot
Located in Jesmond, Newcastle Upon Tyne
jewelry. Emerald Quality Cut Square Faceted Content 0.40 carat Diamond Quality Colour (average grades) H
Category

1910s Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Natural Pearl, Peridot, White Gold

Antique Emerald Diamond Silver and Gold Ear Pendants
Located in Geneva, CH
breathtaking Cabochon Emerald surrounded by Old-mine cut diamonds, set on a backdrop of silver and gold. This
Category

Mid-19th Century Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Gold, Silver

Emerald Diamond Pierced Engraved Art Deco Platinum Ring
Located in Stamford, CT
Emeralds and 9 European full cut diamonds. Slight chip to the corner of one emerald. 3 round old European
Category

Early 20th Century Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

14 Karat Yellow Gold Emerald and Diamond Ring
Located in Washington Depot, CT
marquis emeralds and eight round brilliant cut diamonds set in classic 14K yellow gold. Width: 5 mm. Shank
Category

Early 20th Century Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Yellow Gold

14 Karat Yellow Gold Emerald and Diamond Ring
Located in Washington Depot, CT
emeralds and nine round brilliant cut diamonds set in classic 14K yellow gold. Width: 7 mm. Shank: 2 mm
Category

Early 20th Century Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Yellow Gold

Victorian Five-Stone Diamond Emerald Half Hoop Ring
Located in New York, NY
A bright Victorian emerald and Old Mine cut diamond half hoop five stone ring dating to about 1880
Category

1880s Unknown Late Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

Antique Edwardian 18k Gold Platinum Emerald Diamond Rectangular Platter Ring
Located in Montclair, NJ
-- Stone(s) -- (42) Natural Genuine Emeralds - Square Step Cut - Channel Set - Vivid Green Colors
Category

1910s Edwardian Antique Emerald Cut Diamond

Materials

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

Antique 18ct Gold 1920’s Emerald, Ruby Diamond Cocktail Ring
Located in Brighton, GB
ring. Set with a natural, centre emerald, two natural rubies & a fabulous halo of old cut diamonds
Category

Early 20th Century English Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Ruby, Gold, 18k Gold

Emerald 1.10 Baguette Diamonds 2.80 Yellow Gold Pinky Ring
By Garavelli
Located in Valenza, IT
Square cut emerald ring surronded by baguette cut diamonds. The emerald weight carats 1.10 and it
Category

1660s Italian Modern Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Victorian 0.50ct Emerald and Diamond Trilogy Ring, c.1880s
Located in London, GB
A luscious green emerald is flanked by old cut diamonds in this classic Victorian carved shank ring
Category

1880s British Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Art Deco Austrian Emerald Diamond 14 Karat White Gold Ring
Located in Beverly Hills, CA
One Art Deco Austrian Emerald Diamond 14 Karat White Gold Ring. Featuring one octagonal step cut
Category

1920s Austrian Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Gold, 14k Gold, White Gold

Emerald Drops and Diamonds Earring in 18 Karat Yellow Gold
Located in Bad Kissingen, DE
totaling approx. 4.11 ct.Columbien - 56 round-cut diamonds from a total of approx. 0.69 ct., good to very
Category

Late 18th Century Unknown Late Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Vintage Platinum on Gold Colombian Emerald and Diamonds Clip-On Earrings
Located in Miami, FL
center of a halo of old mine cut diamonds. The well saturated rectangular shape emeralds have an
Category

1920s Unknown Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Gold, Platinum, 14k Gold, Yellow Gold

Antique Art Deco Platinum Old Cut Pear and Carre Cut Diamond Shield Ring
Located in Great Neck, NY
Beautiful Antique Art Deco Platinum Old Cut Pear and Carre Cut Diamond Shield Ring. This incredible
Category

1920s Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

Certified 2.15 Carat Colombian Emerald Art Deco Diamond Platinum Ring
Located in Napoli, NA
-cut Colombian Emerald, surrounded by 2.50 carats of old Round and custom cut diamonds. The Emerald is
Category

1920s Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

Art Deco 1.00ct Emerald and Diamond Trilogy Ring, c.1920s
Located in London, GB
centre flanked by a pair of old cut diamonds. The 1.00 carat central emerald is a natural vivid green
Category

1920s British Art Deco Antique Emerald Cut Diamond

Materials

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

Vintage Emerald Diamond Wide Cuff Bracelet 18K Yellow Gold Silver Top
Located in La Jolla, CA
Bracelet with Rough cut Diamonds and Emeralds features an 18k Oval-shaped Wide Cuff Bracelet circa 1940s
Category

Early 20th Century Unknown Antique Emerald Cut Diamond

Materials

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

19th Century Ruby Emerald Diamond Gold Flower Brooch
Located in Aspen, CO
green emeralds and old cut diamonds and terminating at the end with a cabochon ruby. This piece is
Category

Mid-19th Century Unknown Early Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Ruby, Silver

Edwardian 0.50ct Emerald and Diamond Trilogy Ring, c.1910s
Located in London, GB
by old cut diamonds in a unique stepped box setting. The central emerald is a classic emerald cut
Category

1910s British Edwardian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow 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 Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Pearl, 14k Gold, Silver

.53ctw Round Cabochon Cut Emerald Diamond Owl Pendant, 18k Yellow Gold Bird
Located in Greensboro, NC
: Oiling Color: Green Cut: Round Cabochon Carats: 0.28ctw Natural Diamonds Clarity: VS1 Color: E
Category

19th Century Unknown Antique Emerald Cut Diamond

Materials

Yellow Gold

Victorian Edmond Plisson Emerald Diamond Gold Turtle Brooch
Located in London, GB
with cushion shaped emeralds and old-cut diamonds, in millegrain edged rub over settings, mounted in
Category

1890s Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 10k Gold, 18k Gold

Art Deco with Diamonds, Sapphires, and Emerald Platinum Ring
Located in MADRID, ES
** Characteristics: • Metal: Platinum 925 kts • Central Stone: Emerald, 1.00 ct, Emerald Cut, A++ Purity • Diamonds
Category

1920s Unknown Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Sapphire, Platinum

Antique GIA Colombian Emerald Diamond 18 Karat White Gold Cluster Ring
Located in Beverly Hills, CA
One Antique GIA Colombian Emerald Diamond 18 Karat White Gold Cluster Ring. Featuring one GIA
Category

1910s Unknown Edwardian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, White Gold

.75ctw Round Cut Synthetic Emerald Diamond Ring, 14k Yellow Gold Halo Bypass
Located in Greensboro, NC
(yellow and white) Stone Information: Synthetic Emerald Color: Green Cut: Round Carat: 0.50ct
Category

19th Century Unknown Antique Emerald Cut Diamond

Materials

Yellow Gold

René Kern 0.75ct Diamond, Ruby and Emerald Bird Brooch, c.1920s
By René Kern
Located in London, GB
wings and head, as well as diamonds set across its breast. The eight cut diamonds total 0.75 carat and
Category

1920s Unknown Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Ruby, 18k Gold, Platinum

Antique Art Deco 14k Gold Platinum Diamond Emerald Filigree Bangle Bracelet
Located in Montclair, NJ
Emeralds - Square French Cut - Channel Set w/ Milgrain - Vivid Green Color Total Diamond Carat Weight: 0.30
Category

1920s Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 14k Gold, White Gold, Platinum

6.5 Carat Oval Cut Emerald in 18 Karat Two-Tone Gold Ring Estate
Located in New York, NY
A classic, Cocktail ring 6.5 Carat Emerald and Diamond Ring, Estate with no color enhancement
Category

Early 20th Century Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

Antique Iberian Of Diamond Emerald Girandole Pendent Earrings 18th Century
Located in Firenze, IT
Antique Iberian pendant earrings set with rose-cut diamonds and emeralds in silver and gold, closed
Category

18th Century Italian Georgian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Silver

Edwardian Emerald and Diamond 18 Carat Gold and Platinum Ring
Located in Chipping Campden, GB
sparkling old european cut Diamonds. The emerald is set in 18ct gold which makes the green really pop and
Category

1910s British Edwardian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Platinum

Art Deco 0.50ct Emerald and Diamond Three Stone Twist Ring, c.1920s
Located in London, GB
beautiful twist design. A central 0.50 carat emerald is an emerald cut stone and is flanked by two sparkling
Category

1920s British Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

Antique Diamond and Emerald, Gold and Platinum Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
emerald and old cut diamonds; part of our antique jewelry and estate jewelry collections. This fine
Category

1910s Unknown Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 9k Gold, Yellow Gold, Platinum, Gold

Art Deco 25 Carat Diamond and Emerald Bracelet
Located in Miami, FL
framed, with 294 European cut diamonds weighing approximately 25 carats total, h color, vs clarity. This
Category

1920s Unknown Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

A Flora Cameo Emerald Diamond And Yellow Gold Brooch-Pendant
Located in Firenze, IT
emeralds and old-cut diamonds. Obverse mount with chiseled decoration with vegetal decoration in 18K yellow
Category

1870s Italian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Pair of Late Victorian Emerald Diamond 18k Yellow Gold Cluster Earrings
Located in Beverly Hills, CA
brilliant cut emeralds with a total weight of approximately 0.70 carat. Accented by 22 old mine cut diamonds
Category

Early 1900s Late Victorian Antique Emerald Cut Diamond

Materials

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

Pair Of Emerald And Diamond Pendent Earrings, Circa 1820
Located in Firenze, IT
graduating foliate design decorated with cushion-shaped and single-cut diamonds and mixed-cut emeralds
Category

Early 19th Century English Georgian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

18ct Gold, Emerald, Pearl Diamond Cluster Ring, hallmarked Birmingham 1914
Located in Brighton, GB
natural diamond, complemented by two delicate natural seed pearls and vibrant emerald stones, all
Category

Early 20th Century English Edwardian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Pearl, Gold, 18k Gold

Antique dangling earrings with emeralds and diamonds, Austria-Hungary, 1940s
Located in Chorzów, PL
century - hallmark preserved. Earrings decorated with step-cut emeralds weighing 0.50ct and diamonds
Category

Early 20th Century Hungarian Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 14k Gold

Emerald Ruby Diamond Brooch Pin 1910 Collection Princess Theresa
Located in Herzelia, Tel Aviv
Rubies and single-cut Diamonds, French assay and maker's marks. 1910. Formerly in the collection of
Category

Early 20th Century Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Ruby

Arts Crafts Emerald Diamond 18 Karat Green Gold Laurel Band Ring
Located in Philadelphia, PA
Band ring centers square cut emeralds weighing approximately 0.20 carat Well matched bright green
Category

Early 1900s Arts and Crafts Antique Emerald Cut Diamond

Materials

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

Antique Victorian Emeralds Diamonds Bracelet, 14kt Yellow Gold Silver, c1880
Located in London, GB
emeralds, surrounded with rose cut diamonds. The bracelet has a very nice floral design. The top and bottom
Category

19th Century French Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Yellow Gold, Silver, 14k Gold

Victorian 1.10 Carat Emerald and Diamond Three-Stone Ring, circa 1880s
Located in London, GB
, with great clarity and a pure green colour. To either side of the emerald is an old cut diamond
Category

1880s Unknown Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold

GIA_18K 750 Solid White Gold Natural Diamond Emerald and Sapphire Milgrain Ring
Located in New York, NY
: Round Diamond Cut: Brilliant Cut 3: Secondary Stone: Natural Colombian Emerald Emerald Carat Weight: 1.5
Category

19th Century Contemporary Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Blue Sapphire, 18k Gold, White Gold

Victorian Emerald Diamond and Rock Crystal Drop Pendant
Located in London, GB
rose cut diamonds. The pendant is elegantly finished with 18ct yellow gold accents, enhancing its
Category

19th Century Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Rock Crystal, Gold, 18k Gold, Yellow Gold

1900s Edwardian 1.66 Carat Emerald Diamond Yellow Gold Ring
Located in Poitiers, FR
emeralds oval faceted and rose cut diamonds between each of them. Total weight of emeralds: 1.66 carat
Category

Early 1900s English Edwardian Antique Emerald Cut Diamond

Materials

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

Victorian 1.10ct Emerald and Diamond Carved Shank Ring, hallmarked 1891
Located in London, GB
the flanking pair weighing 0.20 carat a piece. In between the emeralds, two pairs of old cut diamonds
Category

1890s British Victorian Antique Emerald Cut Diamond

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Antique Emerald Bracelet
Located in Geneva, CH
Yellow Gold Black Enameled Bracelet set by Colombian Emerald and Old mine cut Diamond. Colombian
Category

Late 19th Century French Anglo-Indian Antique Emerald Cut Diamond

Materials

Emerald

Fine Art Deco Style 5.50ctw GIA Green Emerald and Diamond Platinum Ring
Located in New York, NY
bezel-set emerald is surrounded by bright-white Swiss -cut diamonds, 4 long baguettes flanked on each
Category

Early 20th Century Art Deco Antique Emerald Cut Diamond

Materials

Diamond, Emerald, Platinum

Edwardian 1.40ct Emerald and Diamond Five Stone Ring, c.1910s
Located in London, GB
A trio of vibrant green emeralds are intersected by a pair of old cut diamonds in this beautiful
Category

1910s British Edwardian Antique Emerald Cut Diamond

Materials

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

  • 1
  • ...
Get Updated with New Arrivals
Save "Antique Emerald Cut Diamond", and we’ll notify you when there are new listings in this category.

Antique Emerald Cut Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate antique emerald cut diamond for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for an antique emerald 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. An antique emerald cut diamond from Kasturjewels, Fabio Ferrara and Suzy Levian — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for an emerald cut version of this piece and are unable to find the perfect match, our selection also includes mixed cut and rose cut alternatives. Finding an antique emerald cut diamond for sale for women should be easy, but there are 113 pieces available to browse for unisex as well as men, too.

How Much is a Antique Emerald Cut Diamond?

On average, an antique emerald cut diamond at 1stDibs sells for $7,500, while they’re typically $176 on the low end and $888,888 for the highest priced versions of this item.

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 Antique Emerald Cut Diamond
  • 1stDibs ExpertApril 5, 2022
    An emerald cut diamond is amongst the most unique gems in the world. Only 3% of the worlds diamonds are emerald cut. They have linear facets and a large table which gives off a hall-of-mirrors effect of light and dark planes. Shop a collection of expertly vetted gems from some of the worlds top sellers on 1stDibs.
  • The main differences of baguette cut diamonds and emerald cut diamonds are its shape and faceting. The shape of the baguette tends to be more elongated. The baguette also has 14 facets while the emerald has 58.
    1stDibs ExpertAugust 17, 2021
    The difference between baguette and emerald cut diamonds is their shape. While both a baguette cut and an emerald diamond are characterized by a rectangular shape and simple step cut facets, baguette cuts feature pointed corners while emerald cuts have wedge shaped polished corners.
  • 1stDibs ExpertOctober 5, 2021
    The best setting for an emerald-cut diamond is a matter of personal preference. For emerald-cut diamonds, solitaire and pavé settings are popular. The emerald cut comprises 58 facets and truncated corners on a rectangular step-cut stone. The flat pavilion of an emerald-cut diamond can magnify the stone’s imperfections, so the gem’s clarity is key. Initially a popular cut for emeralds only, it is now used on other precious stones, but the name has come to define the style. Find antique and vintage emerald-cut diamond jewelry on 1stDibs.