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Tiffany & Co. Art Deco Carved Hardstone Blue and White Enamel Diamond Clock
By Tiffany & Co.
Located in New York, NY
Art Deco Tiffany and Co Clock Comprised of: gold, silver, carved hardstone, old cut diamonds
Category

Vintage 1920s French Art Deco Desk Accessories

Materials

Diamond, 18k Gold, Silver

Art Deco Diamond Enamel Sapphire Platinum Drummer Boy Charm
Located in Philadelphia, PA
diamonds and blue sapphire accents With millegrain detail Tested as platinum Measures: Approx. 3/4 x 1/3
Category

Vintage 1920s Art Deco Charm Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Platinum Blue Sapphire & Diamond Art Deco Ring
Located in Jupiter, FL
Featured here is a stunning Art Deco original sapphire & diamond ring with the greatest attention
Category

Vintage 1920s American Art Deco Cluster Rings

Materials

Diamond, Blue Sapphire, Platinum

ART DECO Style Blue Sapphire Diamond Ring
Located in Chicago, IL
the allure of the Art Deco era. Discover the brilliance of the centerpiece, a 0.20ct round cut
Category

2010s Unknown Art Deco Engagement Rings

Materials

Blue Sapphire, White Diamond, Diamond, 14k Gold

Art Deco Tiffany & Co. Sapphire Diamond Platinum Dinner Ring
By Tiffany & Co.
Located in Philadelphia, PA
saturated and uniform medium dark royal blue color Flanked by trapezoid and French cut diamonds weighing in
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Platinum Blue Sapphire and Diamond Bracelet
Located in Boca Raton, FL
Jay Feder Art Deco Platinum Blue Sapphire and Diamond Bracelet There are 42 Blue Sapphires
Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Diamond and Blue Sapphire Link Bracelet
Located in Denver, CO
Crafted in 1930, this timeless and elegant Art Deco bracelet features a straight line of thirty
Category

Mid-20th Century Art Deco Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Blue Sapphire Diamond Ring
Located in Chicago, IL
The chic geometric design glitters with vibrant diamonds and is punctuated by rich blue lines of
Category

2010s Italian Art Deco Cluster Rings

Materials

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

Art Deco 1.35 Carats Sapphire Diamond Platinum Rectangular Cluster Ring
Located in Philadelphia, PA
royal blue color. Bezel set and surrounded by a floating rectangular frame. Comprised of undulating
Category

Vintage 1930s Art Deco Cluster Rings

Materials

Blue Sapphire, Sapphire, White Diamond, Diamond, Platinum

Estate Art Deco Blue Zircon And Diamond Ring
Located in New York, NY
gold also provides a beautiful contrast to the blue zircon and diamonds. Overall, this Art Deco period
Category

Vintage 1930s American Art Deco Fashion Rings

Materials

Diamond, Blue Zircon, 14k Gold

Art Deco 1.24 Carats Diamond Sapphire Platinum Foliate Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing approximately 1.08 carats - K color with SI1 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Diamond & Blue Sapphire bracelet made in Platinum
Located in Webster, NY
Stunning Art Deco diamond & blue sapphire bracelet crafted in Platinum. Gemstone: Earth Mined
Category

20th Century Art Deco Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

1925 Art Deco Blue Zircon and Diamond Platinum Necklace
Located in Lexington, KY
This is a killer Art Deco necklace that features a spectacular genuine Blue Zircon tied together
Category

Vintage 1920s Art Deco Pendant Necklaces

Materials

Diamond, Blue Zircon, Platinum

Art Deco Style Blue Sapphire Phosphosiderite Gold Diamonds Blue Enamel Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
In these earrings 2 large Blue Sapphire cabochons support 2 white gold elements and diamonds while
Category

2010s Thai Art Deco Drop Earrings

Materials

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

Art Deco 4.10 Carat Blue Sapphire Diamond Ring
Located in Miami, FL
blue sapphire at its center, securely set in a prong setting for maximum brilliance. Flanking the
Category

2010s European Art Deco Cocktail Rings

Materials

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

Art Deco Champagne Diamond and Blue Sapphire Ring
Located in Denver, CO
Crafted in the 1920s from 14kt white gold, this Art Deco band is designed around a bold Old
Category

Mid-20th Century Unknown Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

New Art Deco Style Blue Sapphire Diamonds Platinum Ring
Located in Poitiers, FR
Ring in platinum, dog head hallmark. Charming art deco style ring, it is set with an emerald- cut
Category

21st Century and Contemporary French Art Deco Engagement Rings

Materials

Blue Sapphire, Sapphire, White Diamond, Diamond, Platinum

Antique Art Deco Platinum Filigree Blue Sapphire & Diamond Bracelet
By Marcus & Co.
Located in Miami, FL
Hermann Marcus Signed Antique Art Deco Blue Sapphire and Diamond Bracelet in Platinum. Featuring
Category

Early 20th Century North American Art Deco Link Bracelets

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Sophia D. Diamond and Blue Sapphire Art Deco Platinum Ring
By Sophia D
Located in New York, NY
An Art Deco platinum ring with 1.22 Marquise Cut center stone complemented with 0.97 carats blue
Category

2010s Art Deco Fashion Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Ring 18 Karat White Gold Diamonds and Blue Saphhire Art Deco Ring
Located in Brooklyn, NY
Brilliant Art Deco Style Ring. 18k White Gold 6.40 grams. Total all Diamonds 1.06 carat (center
Category

2010s Thai Art Deco Fashion Rings

Materials

Diamond, Blue Sapphire, White Gold

Sophia D. Blue Sapphire & Diamond Art Deco Style Platinum Ring
By Sophia D
Located in New York, NY
Beautifully designed Art Deco Ring by Sophia D that features 1.02 marquise cut center stone
Category

2010s Art Deco Fashion Rings

Materials

Diamond, Blue Sapphire, Platinum

Old European Diamond Blue Sapphire Art Deco Style Ring
Located in Chicago, IL
This stunning Art Deco-inspired cocktail ring features a 1.15-carat old European cut diamond
Category

2010s American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Aquamarine Gold Diamonds Blue Sapphire Blue Enamel Drops Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
In these Classic Art Deco style earrings we have 2 very good quality Natural Thai Blue Sapphire
Category

2010s Thai Art Deco Drop Earrings

Materials

Aquamarine, Diamond, Blue Sapphire, 14k Gold

Art Deco Style Aquamarine Gold Diamonds Blue Sapphire Blue Enamel Drops Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
In these Classic Art Deco style earrings we have 2 very good quality Natural Thai Blue Sapphire
Category

2010s Thai Art Deco Drop Earrings

Materials

Aquamarine, Diamond, Blue Sapphire, 14k Gold

Art Deco Diamond and Blue Sapphire Ring in Platinum
Located in New York, NY
Art Deco Blue Sapphire And Diamond Ring handcrafted In Platinum. The details are as follows
Category

Vintage 1920s American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco 1.19 Carats Old European Diamond Sapphire Platinum Ribbon Antique Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.83 carat total - I color with VS
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco 0.75 Carat Diamond Sapphire 18 White Gold Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.75 carat - K color with SI1 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

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

Antique Art Deco Diamond Blue Sapphire Filigree Engagement Ring
Located in Miami, FL
Fine Art Deco Engagement ring, with a high-quality center-diamond surrounded by handmade filigree
Category

Vintage 1930s American Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco 1.80 Carats Old European Cut Diamond Sapphire Platinum Engagement Ring
Located in Philadelphia, PA
Surrounded by a halo of calibrè cut natural and synthetic sapphires - bright royal blue in color Bombè style
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Sophia D. Art Deco Emerald, Blue Sapphire and Diamond Bracelet
By Sophia D
Located in New York, NY
Art Deco inspired bracelet set in platinum that features a 4.16 carats of green emerald, 4.25
Category

2010s Art Deco Chain Bracelets

Materials

Diamond, Emerald, Blue Sapphire, Platinum

Art Deco Blue Flash Moonstone and Diamond Ring
Located in Hummelstown, PA
This charming Art Deco ring features a luminous blue flash moonstone set atop a gently domed
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Moonstone, 14k Gold, Platinum

Art Deco 2.80ctw Blue Zircon & Baguette Diamond Ring in Platinum
Located in Boston, MA
Aston Estate Jewelry Presents: A beautiful Art Deco period blue zircon and diamond ring in
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Blue Zircon, Platinum

Sophia D. 17.90 Carat Blue Sapphire and Diamond Art Deco Bracelet
By Sophia D
Located in New York, NY
An art deco inspired bracelet that features a 17.90 carat blue sapphire and 2.49 carat diamond set
Category

2010s Art Deco Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Sophia D. Art Deco Blue Sapphire and Diamond Bracelet in Platinum
By Sophia D
Located in New York, NY
Sophia D. platinum bracelet with 15.60 carat blue sapphire and 2.65 carat diamond. Sophia D by
Category

2010s Art Deco Link Bracelets

Materials

Diamond, Blue Sapphire, Platinum

French Art Deco Stickpin Blue Sapphire Diamond 18K White Gold
Located in Fairfield, CT
French Art Deco Stickpin Blue Sapphire Diamond 18K White Gold This Art Deco sapphire and diamond
Category

Vintage 1920s Art Deco Brooches

Materials

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

Art Deco Diamond & Blue Sapphire 3 Stone Engagement Ring
Located in Santa Barbara, CA
antique Art Deco diamond engagement ring are just the beginning of the story. Centered by a chunky
Category

Vintage 1910s Art Deco Engagement Rings

Materials

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

Art Deco Diamond and Blue Sapphire Filigree Navette Ring
Located in Denver, CO
Crafted in the 1920s, this Art Deco Navette-shaped band fashioned from 18kt white gold features a
Category

Mid-20th Century Unknown Art Deco Three-Stone Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Art Deco 5.5 Carat Blue Sapphire & 1.5 Carat Diamond Platinum Bracelet
Located in New York, NY
The Art Deco Diamond Bracelet is a stunning piece of jewelry that exudes timeless elegance and
Category

Vintage 1920s Art Deco Link Bracelets

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Sophia D. Art Deco Blue Sapphire and Diamond Ring in Platinum
By Sophia D
Located in New York, NY
Art deco inspired ring by Sophia D. with 1.24 carats of baguette and trapezoid diamonds, 2.75
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Turquoise Art Deco Style Blue Sapphire Gold Diamonds Blue Enamel Dangle Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
These earrings have 2 large blue sapphire cabochons that support 2 elements in gold diamonds and
Category

1990s Thai Art Deco Dangle Earrings

Materials

Diamond, Blue Sapphire, Turquoise, Gold, 18k Gold, Enamel

Vintage, Art Deco Blue Sapphire & Diamond Ring For Her
Located in Miami, FL
Indulge in sophistication with our Vintage Art Deco Style Blue Sapphire and Diamond Ring, crafted
Category

21st Century and Contemporary Central American Art Deco Engagement Rings

Materials

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

Art Deco Diamond and Blue Sapphire Filigree Engagement Ring
Located in Denver, CO
An Old European-cut diamond center stone measuring approximately 0.20 carat, H color I1 clarity
Category

Mid-20th Century Art Deco Three-Stone Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Art Deco Blue Sapphire and Diamond Navette Pinky Ring
Located in Denver, CO
Two Old European cut diamonds totaling approximately 0.16 carat, HI color, VS clarity, shine within
Category

Mid-20th Century Art Deco Fashion Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Diamond and Blue Sapphire Tennis Bangle in Art Deco Style
By Gems Paradise
Located in Jaipur, IN
Diamond and Blue Sapphire Tennis Bangle in Art-Deco Style This Victorian period art-deco atypical
Category

2010s Indian Art Deco Bangles

Materials

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

Art Deco Style Carved Jade Blue Sapphire Gold Diamonds Blue Enamel Drop Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
2 large oval cabochons of blue sapphire support 2 white gold diamond and blue enamel elements, at
Category

2010s Thai Art Deco Drop Earrings

Materials

Diamond, Jade, Blue Sapphire, Gold, Enamel

Art Deco 3.84Ct Unheat Blue Sapphire Diamond Ring in Platinum
Located in Hong Kong, HK
platinum. At the heart of this exquisite piece lies a captivating 3.84-carat unheat blue sapphire, its deep
Category

21st Century and Contemporary Hong Kong Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

5.50 Carat Vintage Art Deco Platinum Bracelet with Diamonds & Blue Sapphire
Located in Miami, FL
5.50 Carat Vintage Art Deco Platinum Bracelet With Diamonds and Synthetic Blue Sapphires. Synthetic
Category

Vintage 1940s European Art Deco Retro Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Style Blue Sapphire Phosphosiderite Gold Diamond Enamel Earrings
By Tutti Frutti Jewellery
Located in Bangkok, TH
In these earrings 2 large Blue Sapphire cabochons support 2 white gold elements and diamonds while
Category

2010s Thai Art Deco Drop Earrings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, Enamel

GIA Certified Art Deco Natural Blue Sapphire and Diamond Ring
Located in Denver, CO
In this Art Deco gem, a circular brilliant cut diamond measuring 1.08 carats, J color, VS1 clarity
Category

Mid-20th Century Unknown Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Sophia D. 1.53 Carat Diamond and Blue Sapphire Art Deco Style Ring
By Sophia D
Located in New York, NY
This stunning Art Deco-inspired ring is set in platinum and features a striking 1.53-carat JSI1
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire

Art Deco Marquise Blue Sapphire and Diamond Drop Earrings Ca. 1925
Located in OVIEDO, AS
Art Deco Marquise Blue Sapphire and Diamond Drop Earrings Ca. 1925 A matching pair of earrings
Category

Early 20th Century Spanish Art Deco Drop Earrings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco Diamond Blue Sapphire Platinum Line Link Estate Bracelet
Located in Boca Raton, FL
Stunning Late Deco diamond and sapphire bracelet handcrafted in platinum. The bracelet features 6
Category

Early 20th Century American Art Deco Link Bracelets

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Blue Zircon Rose Cut Diamond Platinum Petit Drop earrings
Located in Napoli, IT
Pretty Blue The prettiest Art Deco Blue Zircon drop earrings finely hand crafted of Platinum Top
Category

Vintage 1910s European Art Deco Dangle Earrings

Materials

Diamond, Blue Zircon, Platinum

Art Deco 1930 Platinum halo Ring with Diamonds and Blue Sapphires
Located in Aventura, FL
sophistication. Period: 1920-30´s Style: Art Deco Metal: Platinum Stone: Natural Diamonds & Blue Sapphires Ring
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Marquise Blue Sapphire and Diamond Ring mounted in Platinum
Located in OVIEDO, AS
Art Deco Marquise Blue Sapphire and Diamond Ring mounted in Platinum. Ca.1925 Art Deco platinum
Category

Early 20th Century Spanish Art Deco Cluster Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco style Platinum Ring with Aquamarine, Blue Sapphires and Diamonds
Located in Aventura, FL
Indulge in the elegance of this exquisite Art Deco style ring expertly crafted in platinum. At its
Category

1990s Art Deco Engagement Rings

Materials

Aquamarine, Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Synthetic Blue Sapphire and Diamond Platinum Earrings
Located in OVIEDO, AS
Art-Deco Synthetic Blue Sapphire and Diamond Drop Earrings. Each earring features a magnificent
Category

Vintage 1910s Spanish Art Deco Drop Earrings

Materials

Diamond, Platinum, 18k Gold

Art Deco Style Platinum Target Ring with Diamonds and Blue Sapphires
Located in Aventura, FL
, totaling approximately 0.10 carats, enhancing its overall brilliance. Period: 1990's Style: Art Deco Metal
Category

1990s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco 4.49ctw Blue Zircon and Diamond Cocktail Ring in Platinum
Located in Boston, MA
Aston Estate Jewelry Presents: A classic Art Deco period blue zircon cocktail ring in platinum
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, Blue Zircon, Platinum

Art-Deco Platinum, Diamond and Natural Blue Sapphire Cocktail Ring
Located in Palm Beach, FL
This lovely and uniquely designed handmade platinum Art-Deco bombe dome ring is bezel set with
Category

Early 20th Century American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

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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.