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Art Deco Sapphire and Diamond Signet Ring
Located in London, GB
Here we have a marvellous sapphire and diamond signet ring crafted at a time when the Art Deco
Category

Vintage 1930s Art Deco Signet Rings

Materials

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

Diamond and Blue Enamel Art Deco Style Floral Cluster Ring in 14K White Gold
Located in Bangkok, TH
The Diamond and Emerald Art Deco Style Floral Cluster Ring in 14K White Gold captures the essence
Category

21st Century and Contemporary Thai Art Deco Cocktail Rings

Materials

Diamond, 14k Gold, White Gold, Enamel

Art Deco 1.65 carat old European cut diamond platinum engagement ring
Located in Beverly Hills, CA
Metal: Platinum Era: Art Deco Circa: 1930's Hallmarks: Purity mark Size: 7.25 and can be resized Gram
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Blue Diamond, Platinum

Art Deco Sapphire and Diamond Tablet Ring
Located in London, GB
Here we have an Art Deco sapphire and diamond tablet ring. The ring consists of two centralised
Category

20th Century Art Deco Engagement Rings

Materials

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

Sophia D. 1.30 Carat Diamond Art Deco Style Platinum Ring
By Sophia D
Located in New York, NY
diamonds and 1.87 carat blue sapphires. The size is a 6.5 and available for resizing. Sophia D by Joseph
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Jade Emerald Lapis Lazuli Blue Enamel Gold Diamonds Drop Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
, middle parts in white gold,full cut round diamonds and blue enamel , bottom parts are 2 Burma Jade round
Category

1990s Thai Art Deco Dangle Earrings

Materials

Diamond, Emerald, Jade, Lapis Lazuli, White Gold, Enamel

Art Deco Style Jade Emerald Lapis Lazuli Blue Enamel Gold Diamonds Drop Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
, middle parts in white gold,full cut round diamonds and blue enamel , bottom parts are 2 Burma Jade round
Category

1990s Thai Art Deco Dangle Earrings

Materials

Diamond, Emerald, Jade, Lapis Lazuli, White Gold, Enamel

Art Deco 12 Carat Sapphire Diamond Gold Ring
Located in Napoli, NA
An exquisite genuine Art Deco style ring handcrafted in 18 kt gold by master jewelers, featuring an
Category

Vintage 1970s Italian Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Sapphire, 18k Gold, Gold

Art Deco Ceylon Sapphire Diamond Ring, 2.04ct Royal Blue, 17K/14K Gold, Size 9
Located in Northampton, MA
A stunning Art Deco sapphire ring featuring a 2.04ct natural Ceylon sapphire of exceptional quality
Category

Vintage 1920s Art Deco Wedding Rings

Materials

Diamond, Sapphire, 14k Gold, 18k Gold

Art Deco Style Blue Round Sapphire Baguette Diamond Halo 18k Rose Gold Ring
By Galt Bro. Jewelers
Located in Oakton, VA
Blue Round Sapphire Baguette Diamond Halo Sun Ray 18K Rose Gold Art Deco Ring 18 Karat Rose Gold
Category

2010s American Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, Rose Gold

Art Deco Platinum Ring with Old Mine Diamond and Sapphires
Located in Aventura, FL
Circa 1920s, this striking Art Deco ring is expertly crafted in platinum and features a captivating
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

French 1930s Art Deco Calibrated Sapphires Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum, mascaron hallmark. A voluminous Art Deco ring, its flat setting is adorned with 8
Category

Vintage 1930s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Antique Art Deco Platinum Old European Diamond Engagement Ring
Located in Great Neck, NY
Beautiful Antique Art Deco Platinum Old European Diamond Engagement Ring. This beautiful antique
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco 1925 Platinum 3 Row Diamond French Natural Blue Sapphires Bracelet
Located in Lexington, KY
This 1925 Art Deco platinum 3 row diamond bracelet with blue French cut sapphires is a true
Category

Vintage 1920s American Contemporary Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Sapphire, Diamond and Platinum Ring, 1.30 Carat
Located in London, GB
An Art Deco sapphire and diamond ring, with a central old cut diamond, weighing an estimated 1.30ct
Category

Vintage 1930s Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Luxury 9.60 Carat Diamond and Sapphire Bracelet
By MC750
Located in Miami, FL
Art Deco Luxury diamond and sapphire bracelet crafted in 18k white gold and featuring 9.60tcw
Category

Vintage 1920s Unknown Art Deco Retro Bracelets

Materials

Diamond, White Diamond, Blue Sapphire, 18k Gold

Art Deco Old Mine Diamond Sapphire Three Stone Ring
Located in New York, NY
Art Deco Old Mine Diamond & Sapphire Three Stone Ring Description: An original Art Deco platinum
Category

Vintage 1980s Unknown Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Style 2.61 Carat Diamond Ruby Blue Sapphire Onyx Yellow Gold Cufflinks
By Luigi Ferrara
Located in Naples, IT
Cufflinks have 0.33 Carats of White Rose Cut Diamonds. These Cufflinks have 2.20 Carats of Blue Oval Cut
Category

21st Century and Contemporary Italian Art Nouveau Cufflinks

Materials

Diamond, White Diamond, Onyx, Ruby, Sapphire, Blue Sapphire, 9k Gold, Ye...

Diamond Blue Sapphire Art Deco Style Engagement Ring in 14K White Gold
Located in Bangkok, TH
Celebrate your love story with this exquisite Diamond Blue Sapphire Art Deco Style Engagement Ring
Category

21st Century and Contemporary Thai Edwardian Engagement Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

GIA Art Deco Style Radiant Shape Diamond Blue Sapphire Halo 18K White Gold Ring
By Unbranded
Located in Oakton, VA
An 18k white gold Art-Deco design diamond and sapphire target ring, center K/VS diamond with an
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

GIA Certified Asymmetrical Art Deco Antique Diamond Engagement Ring
Located in Santa Barbara, CA
This fascinating genuine Art Deco antique diamond engagement ring is special and unparalleled
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Style Engraved Jade Pearl 14K Gold Diamonds Blue Enamel Dangle Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
In 1978 our workshop started in Italy to make simple-chic Art Deco style jewellery, completely
Category

Early 2000s Thai Art Deco Dangle Earrings

Materials

Coral, Diamond, Jade, Pearl, Gold, 18k Gold, Enamel

Art Deco Platinum 1.04 carat Sapphire and Diamond Filigree Ring
Located in Big Bend, WI
Platinum Art Deco blue sapphire and diamond ring. The ring features a genuine earth mined round
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

French 1930s Art Deco Sapphire Diamonds Platinum Brooch
Located in Poitiers, FR
diamonds brooch, of the art deco period. Specialized in antique and creation jewelry since 1975, we
Category

Vintage 1930s French Art Deco Brooches

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White G...

Oval Cut Blue Sapphire Diamond Art Deco Style Halo Set 18K White Gold Ring
By Unbranded
Located in Oakton, VA
Style: Art Deco Metal: 18K White Gold Weight: 4.12 g. (approx. total weight) Ring Size: US7 Center
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

9K Yellow Gold Blue Sapphire and Diamond Art Deco Style Halo Ring
Located in Bangkok, TH
A deep blue sapphire at the center, radiating rich, royal beauty. Surrounding it, a sparkling halo
Category

21st Century and Contemporary Thai Edwardian Solitaire Rings

Materials

Blue Sapphire, Diamond, 9k Gold, Yellow Gold

Art Deco Inspired Diamond Blue Enamel Halo Stud Earrings 14k Solid White Gold
By Spectrum Jewels
Located in Diera, Dubai
Embrace timeless elegance with our natural diamond stud earrings crafted in solid 14K gold — the
Category

21st Century and Contemporary American Art Deco Stud Earrings

Materials

Diamond, Gold, White Gold, Enamel, 14k Gold

Art Deco Diamond and Sapphire Ring
Located in New York, NY
Art Deco Diamond and Sapphire Ring Description: A striking sapphire centers this ornate 18 karat
Category

20th Century Unknown Retro Cocktail Rings

Materials

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

Art Deco Inspired Diamond Blue Enamel Halo Stud Earrings 18k Solid White Gold
By Spectrum Jewels
Located in Diera, Dubai
Embrace timeless elegance with our natural diamond stud earrings crafted in solid 18K gold — the
Category

21st Century and Contemporary American Art Deco Stud Earrings

Materials

Diamond, Gold, 18k Gold, White Gold, Enamel

14.17 Carat Blue Sapphire and Diamond Dangle Earrings in Art-Deco Style
By Gems Paradise
Located in Jaipur, IN
14.17 Carat Blue Sapphire and Diamond Dangle Earrings in Art-Deco Style This Victorian-era art
Category

2010s Indian Contemporary Dangle Earrings

Materials

Diamond, Blue Sapphire, 14k Gold, Yellow Gold, Silver

Art Deco Style Blue Sapphire and Old Cut Diamond Target Ring in Platinum
Located in London, GB
A beautiful Art Deco style old cut diamond and blue sapphire squared target ring set in platinum
Category

Early 2000s European Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Diamond Red Ruby Blue Sapphire Halo Set 14K White Gold Ring
By Unbranded
Located in Oakton, VA
and sapphire target ring, made in the style of Art Deco ring. Ring Information Style: Art Deco Weight
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

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

Art Deco 14K White Gold Platinum Blue Enamel Old European Diamond Bar Brooch
Located in Houston, TX
Filigreed, 14K white gold and platinum, diamond art-deco (1920-1930) brooch. The metals were tested and
Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Gold, 14k Gold, White Gold, Platinum, Enamel

Art Deco Inspired Sapphire Diamond Gold Platinum Ring 6.25
Located in Miami, FL
Art Deco Inspired Sapphire Diamond Gold Platinum Ring This beautiful and nostalgic Art Deco
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum, Gold

Art Deco Style Halo Set Diamond with Emerald Blue Sapphire 14K White Gold Ring
By Unbranded
Located in Oakton, VA
diamond with emerald and sapphire halo. Ring Information Style: Art Deco Weight: 4.40 g. (approx. total
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

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

Art Deco Diamond Bracelet with Light Fancy Blue Marquise Diamond
Located in Beverly Hills, CA
Timeless Art Deco diamond and platinum bracelet created in Europe in the 1930s. Its highlight is an
Category

Vintage 1930s European More Bracelets

French 1920s Art Deco Natural Ceylon Sapphire Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum ring, dog head hallmark. A sublime Art Deco ring, its platinum setting follows the
Category

Vintage 1920s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

French 1930s Art Deco Natural Cornflower Certified Sapphire Diamonds Ring
Located in Poitiers, FR
blue cushion- cut sapphire of more than 10 carats, held in claws. The basket is openwork, art deco
Category

Vintage 1930s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Natural Blue Sapphire Diamond Art Deco Style Pendant in 9K Yellow Gold
Located in Bangkok, TH
This hexagonal pendant crafted in yellow gold embellished diamonds and a round blue sapphire
Category

21st Century and Contemporary Thai Edwardian Pendant Necklaces

Materials

Diamond, Blue Sapphire, 9k Gold, Yellow Gold

Art Deco GIA 2.40 carat old European cut diamond platinum engagement ring
Located in Beverly Hills, CA
Art Deco design and the soulful beauty of antique diamonds—an heirloom piece with enduring romance and
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Blue Diamond, Platinum

Sophia D. Art Deco Ring in Platinum with Diamonds, Emeralds and Blue Sapphires
By Sophia D
Located in New York, NY
Three gems Art Deco ring by Sophia D. Set in platinum, the ring features a cushion cut center
Category

2010s Art Deco Fashion Rings

Materials

Emerald, Sapphire, Platinum

Vintage Art Deco Style 8.82ct Cabochon Blue Sapphire Diamond 20K Men s Gold Ring
Located in Wan Chai District, HK
Introducing our Vintage Art Deco Style 8.82ct Cabochon Blue Sapphire Diamond Men's Ring in Yellow
Category

1990s Hong Kong Egyptian Revival Dome Rings

Materials

Diamond, Blue Sapphire, Yellow Gold

Art Deco Sapphire Diamond Chandelier Earrings, 18 Karat White Gold
Located in Beverly Hills, CA
blue sapphires and dazzling diamonds. These Art Deco sapphire and diamond chandelier earrings are a
Category

20th Century Unknown Art Deco Chandelier Earrings

Materials

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

French Late Art Deco Natural Ceylan Sapphire Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum, dog head hallmark. Sublime and imposing Art Deco ring, it is set with a natural
Category

Vintage 1930s French Art Deco Dome Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco 1.94 Carat Diamond and Sapphire Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
antique sapphire ring has been crafted in platinum. The Art Deco design is ornamented with a central
Category

Vintage 1930s Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Diamond and Sapphire Halo Ring
Located in New York, NY
Art Deco Diamond and Sapphire Halo Ring Description: A striking Art Deco–inspired ring centering
Category

20th Century Unknown Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco filigree Platinum Brooch with 5.15 CTW in Sapphire and Diamonds
Located in Aventura, FL
Circa 1910–1920s, this exquisite Art Deco era brooch is masterfully crafted in platinum, featuring
Category

Vintage 1910s Art Deco Brooches

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

14K White Gold Art Deco Filigree Pin with Diamond Blue Spinel
Located in Laguna Beach, CA
Art Deco Brooch with diamond. Tests 95% platinum and weighs 3.2 grams. The pin & latch are white
Category

Mid-20th Century Brooches

Materials

Diamond, Spinel, 14k Gold, White Gold

Blue Sapphire Diamond Accent Sterling Silver Filigree Art Deco Style Ring w Box
Located in Mount Kisco, NY
design with exquisite detail reminiscent of the Art Deco Period. This ring has a center .25 round faceted
Category

2010s American Fashion Rings

Materials

Diamond, Blue Sapphire, Sterling Silver

Cartier Art Deco Sapphire and Diamond Stickpin, c. 1920
By Cartier
Located in Weston, MA
An elegant Art Deco sapphire and diamond stickpin by Cartier depicts symbols of love and devotion
Category

Vintage 1920s Art Deco Brooches

Materials

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

Art Deco Sapphire and Diamond Double Target Ring
Located in London, GB
Here we have a wonderfully original ring from a time when the Art Deco style was at the height of
Category

Vintage 1920s Art Deco Engagement Rings

Materials

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

Art Deco Ruby Sapphire and Diamond Toi Et Moi Ring
Located in London, GB
carats, Colour: G, Clarity: VS Remaining Diamonds: Approx. 0.15ct Tested As: Platinum Period: Art Deco
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Ruby, Sapphire, Blue Sapphire, Platinum

Diamond and Blue Sapphire Brooch in Platinum .90 Carats Total Art Deco Style
By Sarosi By Timeless Gems
Located in Los Angeles, CA
pave-set diamonds provide a striking contrast to the channel-set royal blue sapphire baguettes. The
Category

Early 20th Century North American Artisan Brooches

Materials

Blue Sapphire, White Diamond, Sapphire, Diamond, Gold, White Gold, 18k G...

Art deco ring, in platinum set with diamonds and sapphires
Located in SAINT-OUEN-SUR-SEINE, FR
1930 period ring, made of platinum, set in its center with a 0.60 carat diamond surrounded by a
Category

Vintage 1930s French Art Deco Wedding Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Old Mine Cut Diamond Blue Enamel Bar Brooch Pin Antique Edwardian Box
Located in New York, NY
This is a stunning antique Art Deco - Edwardian Old Mine Cut Diamond and Royal Blue Enamel Bar
Category

Early 20th Century Unknown Art Deco Brooches

Materials

Diamond, Gold, 14k Gold, White Gold, Enamel

Tiffany Co. Art Deco Platinum Cushion Sapphire Diamond Ring
By Tiffany Co.
Located in New York, NY
A rare and pristine Art Deco cushion sapphire platinum diamond ring by Tiffany & Co. circa 1925
Category

Early 20th Century American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

1930s English Art Deco Kashmir sapphire diamond cluster ring
Located in London, GB
Art Deco Kashmir sapphire and diamond cluster ring. Centrally set with a cushion shape old cut
Category

Vintage 1930s British Art Deco Cluster Rings

Materials

Diamond, Blue Sapphire, White Gold

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Blue Diamond Art Deco For Sale on 1stDibs

Find the exact blue diamond art deco you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using Platinum, Gold and 18k Gold. You can easily find a 2249 antique edition and 567 modern creations to choose from as well. Making the right choice when shopping for a blue diamond art deco may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. A blue diamond art deco from Tutti Frutti Jewellery, Luigi Ferrara and Tiffany Co. — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes old european cut and oval cut alternatives. When shopping for a blue diamond art deco, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Blue Diamond Art Deco?

Prices for a blue diamond art deco can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $297 and can go as high as $325,000, while this accessory, on average, fetches $5,799.

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.