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Round Brilliant Cut Blue Aquamarine Emerald Art Deco Style White Gold Pendant
By Unbranded
Located in Oakton, VA
aquamarine is then surrounded by a target of French cut vibrant green emeralds and glittering diamonds
Category

21st Century and Contemporary Art Deco Pendant Necklaces

Materials

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

Art Deco Style White Brilliant Cut Diamond Emerald Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
Carats of White Brilliant Cut Diamonds. This Ring has a 0.50 Carats Emerald. Size ITA: 15 USA: 7 1/4
Category

Late 20th Century Italian Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Emerald, 9k Gold, Yellow Gold, Sterling Silver

Art Deco Style Emerald-Cut Diamond, Tsavorite, Black Onyx and Ruby Ring
Located in New York, NY
An Art Deco style cocktail ring featuring a single emerald-cut diamond weighing approximately 0.90
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Onyx, Ruby, Tsavorite, Platinum

Vintage Art Deco Old European Cut Diamond and Emerald Platinum Engagement Ring
Located in Miami, FL
Vintage Art Deco Carved Filigree Platinum Diamond and Emerald Engagement Ring. Featuring a 2.50
Category

Vintage 1930s European Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Art Deco 1930s Emerald and Diamond Platinum Bracelet
Located in New York, NY
1930s Art Deco platinum bracelet, decorated with vibrant emeralds and approximately 11 carats in I
Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Emerald, Platinum

Natural Round Brilliant-Cut Diamond Emerald Art Deco Platinum Ring In Stock
Located in Boca Raton, FL
Natural Round Brilliant-Cut Diamond & Emerald Art Deco Platinum Ring Material: Platinum Diamond
Category

21st Century and Contemporary American Art Deco Fashion Rings

Materials

Diamond, Emerald, Platinum

Antique Art Deco Platinum Old Cut Diamond w/ Emeralds Open Geometric Brooch Pin
Located in Montclair, NJ
Here we have a stunning art deco diamond brooch crafted in solid platinum. 3 corners of the inside
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Emerald, Platinum

Diamond Emerald Sapphire Fancy Cut Halo Art Deco Style Rose Flower Ring
By Unbranded
Located in Oakton, VA
the Art Deco era. The ring features a round shape center diamond in a bezel setting surrounded by
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, Blue Sapphire, 14k Gold, White Gold

14 Karat White Gold Emerald Cut Blue Topaz Ring Art Deco
Located in Wallkill, NY
Stunning Open cut work on this 1920's Ring. Emerald-Cut blue topaz set in 14K White Gold. Ring
Category

Vintage 1920s Art Deco Solitaire Rings

Materials

Topaz, Blue Topaz, 14k Gold, White Gold

Art Deco Cabochon Cut Emerald Diamond Halo Ring in Platinum Circa 1920 s
Located in Boston, MA
A captivating art deco halo ring featuring a 1.75 carat cabochon cut emerald, exuding a vibrant
Category

Vintage 1920s Art Deco Cluster Rings

Materials

Diamond, Emerald, Platinum

Art Deco Style White Diamond Cushion Cut Emerald Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
Brilliant Cut Diamonds. This Ring has a 10.66 Carats Natural Zambia Cushion Cut Emerald. This Ring is
Category

21st Century and Contemporary Italian Art Deco Cocktail Rings

Materials

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

Art Deco Style Natural Turquoise Moder Round Cut Emerald Yellow Gold Earrings
By Luigi Ferrara
Located in Naples, IT
Modern Round Cut Emeralds. These Earrings have Oval Cabochon Cut and Pear Cabochon Cut Natural Turquoise
Category

Mid-20th Century Italian Art Deco Stud Earrings

Materials

Emerald, Turquoise, 9k Gold, Yellow Gold

Art Deco Style White Diamond Octagon Cut Emerald Onyx Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
Carats of White Brilliant Cut Diamonds. This Ring has a 3.23 Carats Natural Octagon Cut Zambia Emerald
Category

21st Century and Contemporary Italian Art Deco Cocktail Rings

Materials

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

Art Deco Style 2.94 Carat Old European Cut Diamond and Emerald Bombè Ring
By Belrose Estate Jewelers
Located in Santa Barbara, CA
The spirit of the Art Deco era shines through with a 2.94 carat old European cut diamond commanding
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Art Deco Diamond Emerald Platinum Bracelet, Circa 1927
Located in Beverly Hills, CA
An original Art Deco bracelet showcasing alternating sections of white diamonds and green emeralds
Category

Vintage 1920s American Art Deco Chain Bracelets

Materials

Diamond, Emerald, Platinum

Art Deco Style White Diamond Oval Cut Emerald Onyx Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
of White Brilliant Cut Diamonds. This Ring has a central Natural 1.75 Carats Oval Cut Emerald. This
Category

21st Century and Contemporary Italian Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Emerald, Onyx, 14k Gold, Yellow Gold

Round Diamond French Cut Green Emerald Art Deco Style 14K White Gold Earrings
By Unbranded
Located in Oakton, VA
A pair of Art Deco style emerald and diamond lever back earrings, set with French cut emeralds and
Category

21st Century and Contemporary Art Deco Dangle Earrings

Materials

Diamond, Emerald, 14k Gold, White Gold

Art Deco Style White Rose Cut Diamond Oval Cut Emerald Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
Carats of White Rose Cut Diamonds. This Ring has 2.50 Carats Zambia Oval Cut Emeralds. Size ITA: 17 USA
Category

Late 20th Century Italian Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Emerald, 9k Gold, Yellow Gold, Sterling Silver

Art Deco Emerald and Diamond Necklace / Pendant
Located in New York, NY
Platinum, Emerald and Diamond Necklace with detachable pendant, featuring cut cornered square
Category

Early 20th Century British Art Deco Drop Necklaces

Materials

Diamond, Emerald, Platinum

Magnificent Emerald and Diamond Platinum Art Deco Bracelet
Located in Lucerne, CH
This original magnificent Art Deco bracelet is handcrafted in platinum 950. The 310 round-cut, 6
Category

Vintage 1920s Art Deco Link Bracelets

Materials

White Diamond, Emerald, Platinum

Art Deco Style White Diamond Oval Cut Emerald Onyx Yellow Gold Cocktail Ring
By Luigi Ferrara
Located in Naples, IT
Brilliant Cut Diamonds. This Ring has a central Natural 1.60 Carats Oval Cut Emerald. This Ring has also
Category

21st Century and Contemporary Italian Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Emerald, Onyx, 14k Gold, Yellow Gold

Antique Art Deco 1920s 1.20 Carat Asscher Cut Diamond Square Ring with Emeralds
Located in New York, NY
Finely crafted in platinum and 18k yellow gold with an Asscher cut Diamond, accenting Emeralds, and
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

Art Deco Style Brilliant Diamond Green Emerald Fancy Cut Halo White Gold Pendant
By Unbranded
Located in Oakton, VA
This Art-Deco pendant is completely spectacular! The vibrant color stone Blue Sapphire is a
Category

21st Century and Contemporary Art Deco Pendant Necklaces

Materials

Diamond, Emerald, 14k Gold, White Gold

5.22 ct Colombian Emerald Art Deco Ring with Old Cut Diamonds in 18K Gold
Located in Bangkok, TH
Introducing the epitome of luxury and sophistication, behold the breathtaking Art Deco inspired
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

GIA Certified Old European Cut Diamond Art Deco Style Emerald Diamond Ring
Located in Chicago, IL
0.49ct 💚 Emeralds: Custom cut, bright spring green 🔷 Diamonds: G-H color, VS1-SI1 clarity 📏 Ring Size
Category

2010s American Art Deco Cocktail Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Art Deco Style Oval Cut Green Emerald Diamond Vintage Inspired White Gold Ring
By Unbranded
Located in Oakton, VA
Emerald and diamond Art Deco-inspired ring with seventeen emeralds totaling 1.92 carats. This
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

18K Yellow Gold Art Deco Eternity Diamond Princess Cut Emerald Engagement Band
Located in Los Angeles, CA
Dekara Designs Collection Art Deco Inspired Genuine Princess Cut Emerald Diamond Eternity Diamond
Category

21st Century and Contemporary American Art Deco Band Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

LaCloche Emerald Ruby Diamond Art Deco Style Pin
By LaCloche
Located in New York, NY
French Art Deco style emerald, ruby & diamond flower vase motif brooch by LaCloche. It is
Category

20th Century French Art Deco Brooches

Materials

Diamond, Emerald, Ruby

Art Deco 2.3 Carat Aquamarine Ring 18 Karat White Gold Emerald Cut
Located in New York, NY
This is a stunning Art Deco - Edwardian 2.3 Carat Emerald Cut Aquamarine Ring in an 18 Karat White
Category

Early 20th Century Unknown Art Deco Engagement Rings

Materials

Aquamarine, Gold, White Gold, 18k Gold

Diamond Emerald Art Deco Style Swirling Fancy Cut Halo 14K White Gold Ring
By Unbranded
Located in Oakton, VA
A mesmerizing ensemble of diamond and emerald, a swirling engagement ring. This Art Deco inspired
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, 14k Gold, White Gold

Oscar Heyman Art Deco Emerald Onyx Diamond Bracelet
By Oscar Heyman
Located in New York, NY
Oscar Heyman Art Deco Emerald, Onyx & Diamond Bracelet. A legendary multi-gem bracelet featuring 2
Category

Vintage 1920s American Art Deco Link Bracelets

Materials

Diamond, Emerald, Onyx, Platinum

Art Deco 1.26 Carat Octagon Cut Emerald Diamond Halo Pendant White Gold 18 Karat
By VR Jewels
Located in New York, NY
Art Deco Emerald Diamond Halo Pendant in 18K Gold studded with octagon cut emerald. This stunning
Category

21st Century and Contemporary American Art Deco Pendant Necklaces

Materials

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

Octagon Emerald Cut Art Deco Style Blue Topaz Onyx White Gold Stud Earrings
By Unbranded
Located in Oakton, VA
emerald cut sky blue topaz, edged in outer frame of black onyx. 14K White Gold. Information Style: Art
Category

21st Century and Contemporary Art Deco Stud Earrings

Materials

Onyx, Blue Topaz, 14k Gold, White Gold

Art Deco Style Handcrafted White Rose Cut Diamond Emerald Yellow Gold Bracelet
By Luigi Ferrara
Located in Naples, IT
has 0.90 Carats of White Rose Cut Diamonds. This Bracelet has 0.60 Carats of Modern Round Cut Emeralds
Category

21st Century and Contemporary Italian Art Deco Bangles

Materials

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

Art Deco Untreated Colombian Emerald Ring, 2.89 Carats
Located in New Orleans, LA
Art Deco-era elegance is reflected in this captivating emerald and diamond ring. The 2.89-carat
Category

20th Century Art Deco Three-Stone Rings

Materials

Diamond, Emerald, Platinum

Emerald Cut Blue Sapphire Diamond Art Deco Geometric Style 14K White Gold Ring
By Unbranded
Located in Oakton, VA
A striking and intriguing jewel, indeed. This bold Art Deco style ring highlights a gorgeous
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Art Deco Style Emerald Cut Blue Topaz Diamond Drop 14K White Gold Earrings
By Unbranded
Located in Oakton, VA
Express yourself with these insanely stylish, stunningly detail earrings with emerald cut blue
Category

21st Century and Contemporary Art Deco Drop Earrings

Materials

Diamond, Blue Topaz, 14k Gold, White Gold

Art Deco Platinum Bracelet with Diamond Sapphire Emerald
Located in Beverly Hills, CA
A delicate Art Deco bracelet created in the 1930s. The bracelet is made of platinum, step cut
Category

Vintage 1930s Unknown Art Deco More Bracelets

Materials

Diamond, Emerald, Sapphire, Platinum

7.70 Carat Cabochon-Cut Emerald, Diamond, and Ruby Cocktail Ring in Art-Deco
By Gems Paradise
Located in Jaipur, IN
7.70 Carat Cabochon-Cut Emerald, Diamond, and Ruby Cocktail Ring in Art-Deco Style This Victorian
Category

2010s Indian Art Deco Cocktail Rings

Materials

Diamond, Emerald, Ruby, Silver

Antique Art Deco 1920s3.00 Carat Bow Brooch with Emeralds
Located in New York, NY
Finely crafted in platinum with a Lozenge cut Diamond and Old European cut Diamonds weighing a
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Emerald, Platinum

Magnificent French Art Deco Diamond Emerald Platinum Bracelet
Located in Beverly Hills, CA
A one of a kind bracelet from the early Art Deco era, Circa 1925. It features an array of larger
Category

Vintage 1920s American Art Deco More Bracelets

Materials

Diamond, Emerald, Platinum

Ferris Wheel Diamond French Cut Emerald Art Deco Style Stud White Gold Earrings
By Unbranded
Located in Oakton, VA
Created in gold and adorned with round diamond and French cut emerald, the design is reminiscent of
Category

21st Century and Contemporary Art Deco Stud Earrings

Materials

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

1.82 Carat Art Deco Colombian Emerald and Diamond Ring
Located in Bangkok, TH
This exquisite Art Deco-inspired ring features a rare 1.82 Carat Colombian emerald, celebrated for
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Emerald Cut Aquamarine and Diamond Art Deco Style Pendant in 14K White Gold
Located in Bangkok, TH
Art Deco style pendant showcases a radiant emerald cut aquamarine as its centerpiece, exuding soft
Category

21st Century and Contemporary Thai Art Deco Pendant Necklaces

Materials

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

Oval Shape Brilliant Cut Diamond Green Emerald Art Deco Style White Gold Ring
By Unbranded
Located in Oakton, VA
carat, surrounded by French Cut emeralds and outlined with a curvaceous border of round diamonds. This
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, 14k Gold, White Gold

Art Deco Platinum 18kt Gold Ring with Colombian Emerald and Old Cut Diamonds
Located in Braintree, GB
An exquisite Art Deco ring crafted circa 1920 in a combination of 18kt gold and platinum, featuring
Category

Vintage 1920s French Art Deco Cluster Rings

Materials

Diamond, Emerald, Gold, 18k Gold, Platinum

Emerald Cut London Blue Topaz Sapphire Art Deco Style 9K Yellow Gold Earrings
By Unbranded
Located in Oakton, VA
A beautiful pair of vintage design earrings. Crafted in 9k yellow gold with emerald cut London blue
Category

21st Century and Contemporary Art Deco Drop Earrings

Materials

Sapphire, Blue Topaz, 9k Gold, Yellow Gold

Art Deco Style Emerald Cut Blue Aquamarine Diamond Onyx 14K White Gold Ring
By Unbranded
Located in Oakton, VA
A striking and intriguing jewel, indeed. This big, bold, and colorful Art Deco style ring
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Aquamarine, Diamond, Onyx, 14k Gold, White Gold

Art Deco Style Diamond and French Cut Emerald Stud Earrings in 18K Gold
Located in Bangkok, TH
These Art-Deco stud earrings are completely spectacular! The vibrant color stone (you can select
Category

21st Century and Contemporary Unknown Art Deco Stud Earrings

Materials

Diamond, Emerald, 14k Gold, White Gold

Art Deco Style Emerald Cut Blue Topaz Diamond Engagement 18K White Gold Ring
By Unbranded
Located in Oakton, VA
your fine jewelry collection. Ring Information Style: Art Deco Metal: 18K Gold Weight: 5.50 g. (approx
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Blue Topaz, 18k Gold, White Gold

Art Deco Inspired .83 Carat Diamond Emerald Platinum Ring
Located in Beverly Hills, CA
Emeralds Cut: Square and Calibre Cuts Weight: Approximately 0.60 Carats Color: Green Metal: Platinum Era
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Art Deco Style White Rose Cut Diamond Emerald Yellow Gold Drop Earrings
By Luigi Ferrara
Located in Naples, IT
have 0.20 Carats of White Rose Cut Diamonds. These Earrings have 1.20 Carats of Modern Round Cut
Category

21st Century and Contemporary Italian Art Deco Lever-Back Earrings

Materials

Diamond, White Diamond, Emerald, 9k Gold, Yellow Gold, Sterling Silver

6.99 Carat Emerald Cut Amethyst and 14K White Gold Art Deco 1930s Cocktail Ring
Located in Towson, MD
One Art Deco 1930s 14 karat white gold ring centered with a striking emerald cut amethyst weighing
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Amethyst, 14k Gold, White Gold

Art Deco Emerald and Diamond Platinum Cluster Ring
Located in Chipping Campden, GB
emerald. The diamonds total approx 50pts and the classic square cut emerald measures approx 1.3carats
Category

Vintage 1920s British Art Deco Cluster Rings

Materials

Diamond, Emerald, Platinum

Platinum Gold Art Deco Diamond, Sapphire and Emerald Ring
Located in Aventura, FL
This striking Art Deco ring is masterfully crafted in a refined combination of platinum and gold
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Sapphire, Gold, Platinum

Art Deco Platinum Diamond and Emerald Devil Pendant
Located in Venice, CA
This platinum Art Deco pendant features nine single cut diamonds and an assortment of triangluar
Category

Vintage 1920s Art Deco Pendant Necklaces

Materials

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

Round Diamond Blue Sapphire Emerald Art Deco Style Mosaic Cut White Gold Ring
By Unbranded
Located in Oakton, VA
geometric wheel, French cut blue sapphires and emeralds surround the center diamond. Combining the
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, Blue Sapphire, 14k Gold, White Gold

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Art Deco Emerald Cut For Sale on 1stDibs

Find the exact art deco emerald cut you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, Platinum and 18k Gold, this item was constructed with great care. Find an antique version now, or shop for 563 vintage or 326 modern creation for a more contemporary example of these cherished accessories. Finding the perfect art deco emerald cut may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 Carat and 1 Carat carat weights, specifically, are sought with frequency. There have been many well-made iterations of the classic art deco emerald cut over the years, but those made by Luigi Ferrara, Tutti Frutti Jewellery and Single Stone are often thought to be among the most beautiful. An art deco emerald cut of any era or style can lend versatility to your look, but a version featuring Diamond, from our inventory of 594, is particularly popular. An emerald cut version of this piece has appeal, but there are also mixed cut and brilliant cut versions for sale. There aren’t many items for men if you’re seeking an art deco emerald cut, as most of the options available are for women and unisex.

How Much is a Art Deco Emerald Cut?

The price for an art deco emerald cut starts at $227 and tops out at $650,000 with these rings, on average, selling for $8,998.

A Close Look at Art-deco Jewelry

Fascination with the Jazz Age is endless, and even today jewelry designers continue to be inspired by authentic Art Deco jewelry and watches.

The Art Deco period, encompassing the 1920s and ’30s, ushered in a very distinct look in the design of jewelry. There were many influences on the jewelry of the era that actually began to take shape prior to the 1920s. In 1909, Serge Diaghilev brought the Ballet Russes to Paris, and women went wild for the company’s exotic and vibrant costumes It’s no wonder, then, that jade, lapis lazuli, coral, turquoise and other bright gemstones became all the rage. There already existed a fascination with the East, particularly China and Japan, and motifs consisting of fans and masks started to show up in Art Deco jewelry.

However, the event that had the greatest influence on Deco was the excavation of the tomb of King Tut in 1922. When the world saw what was hidden in Tut’s burial chamber, it sent just about everyone into a frenzy. Pierre Cartier wrote in 1923 that “the discovery of the tomb will bring some sweeping changes in fashion jewelry.” And he couldn’t have been more right. “Egyptomania” left an indelible mark on all of the major jewelry houses, from Cartier to Van Cleef Arpels, Boucheron and Georges Fouquet. (Cartier created some of the most iconic jewelry designs that defined this era.)

While a lot of Art Deco jewelry was black and white — the black coming from the use of onyx or black enamel and the white from rock crystal and diamonds — there is plenty of color in jewelry of the era. A perfect accent to diamonds in platinum settings were blue sapphires, emeralds and rubies, and these stones were also used in combination with each other.

Many designers employed coral, jade and lapis lazuli, too. In fact, some of the most important avant-garde jewelers of the period, like Jean Després and Jean Fouquet (son of Georges), would combine white gold with ebony and malachite for a jolt of color.

A lot of the jewelry produced during this time nodded to current fashion trends, and women often accessorized their accessories. The cloche hat was often accented with geometric diamond brooches or double-clip brooches. Backless evening dresses looked fabulous with sautoir necklaces, and long pearl necklaces that ended with tassels, popular during the Edwardian period, were favored by women everywhere, including Coco Chanel.

Find unique Art Deco necklaces, earrings, bracelets and other 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.