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Platinum Emerald Diamond Cluster Pendant Day and Night Earrings
Located in Miami, FL
, these earrings expose a cluster of floral motif marquise emerald and tapered baguette diamonds. The 36
Category

Vintage 1960s Unknown Retro Dangle Earrings

Materials

Diamond, Emerald

Diamond Black Onyx Gold Zebra Brooch by Van Cleef Arpels circa 1980
By Van Cleef Arpels
Located in London, GB
Designed as a pavé-set diamond with tallow topped onyx and marquise emerald eyes. circa 1980
Category

Vintage 1980s Brooches

Materials

Diamond, Gold

Rose-Cut Emerald and Diamond Dangle Earrings
Located in Nantucket, MA
marquise emerald also with diamonds and the large slice of emeralds are as found in their natural state and
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Emerald, 18k Gold, Sterling Silver

Van Cleef Arpels Emerald Diamond Lion Pin or Pendant
By Van Cleef Arpels
Located in Bal Harbour, FL
Round diamonds and marquise emeralds are expertly combined by Van Cleef & Arpels to make the
Category

Late 20th Century French Brooches

Materials

White Diamond, Emerald, 18k Gold

David Webb Emerald Diamond Gold Platinum Tiger Pin Brooch
By David Webb
Located in Stamford, CT
. total weight .10cts, F – G, VS 2 Marquise Emeralds, 6.45 x 3.12mm Platinum and 18k yellow gold 54.9
Category

Vintage 1960s Brooches

Materials

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

Yellow Gold Colored Gemstone Cross
Located in Coral Gables, FL
Marquise Emeralds, & 2 Sapphires Totaling Approximately 1.00 Carat. Textured Design with Contrasting Finish
Category

Late 20th Century Pendant Necklaces

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold, Yellow Gold

1970s Emerald Diamond Gold Cocktail Ring
Located in Los Angeles, CA
, approximately H color and SI clarity, within a radiating border comprising seven marquise Emeralds of various
Category

Vintage 1970s Modern Cocktail Rings

Materials

Diamond, Emerald, 14k Gold

Multi-Gem Ruby Emerald Sapphire Diamond Gold Cluster Earrings
Located in Miami, FL
emeralds of intense green color approx. 2.60cttw; 6 faceted marquise genuine sapphires of enchanting royal
Category

Vintage 1960s Unknown Retro Clip-on Earrings

Materials

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

Emerald Diamond Gold Floral Ring
Located in Miami, FL
sparkling 7-petal flowers expose a total of 21 genuine marquise emeralds of 1.44 cts cumulative weight. 6
Category

Vintage 1960s Unknown Modern Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Mark Broumand 34.17 Carat Fancy Shape Diamond Cuff Bracelet
By Mark Broumand
Located in Los Angeles, CA
This sumptuous diamond cuff bracelet features a mesmerizing mosaic of pear, marquise, emerald and
Category

2010s Cuff Bracelets

Crivelli Diamond and Emerald Snake Bracelet in 18 Karat White Gold Black Rhodium
By Crivelli
Located in Carmel, IN
are made of two custom cut marquise emeralds of very fine quality. This bracelet will fit a 6-7
Category

2010s More Bracelets

Materials

Diamond, Emerald, White Gold

Emerald Baguette and Round Diamond Gold Floral Design Earrings
Located in Miami, FL
crafted floral earrings are adorned with a total number of 72 genuine marquise emeralds, cumulatively
Category

Late 20th Century Unknown Modern More Earrings

Materials

Diamond, Emerald, 18k Gold, White Gold

18 Karat Leopard Brooch with Emeralds and Sapphires in the Manner of Cartier
Located in Brisbane City, QLD
Cartier. The pin features 69 stones in total and comprises of two marquise emeralds and 67 round sapphires
Category

Mid-20th Century Art Deco Brooches

Materials

Emerald, Sapphire, Gold, 18k Gold, Yellow Gold

Platinum 31 Carats Diamond Drop Vintage Riviera Necklace
Located in New York, NY
. Diamond Shape: Round, Baguette, Marquise, Emerald Cut. Diamond Quality: G-H color, VS clarity. Grams
Category

20th Century American Modern Link Necklaces

Materials

Diamond, Platinum

Fancy Shape Diamond Black Agate White Gold Hoop Earclips
Located in Bal Harbour, FL
Extraordinary hoop earrings featuring oval, marquise, emerald cut, pear and heart shape diamonds
Category

2010s Unknown Hoop Earrings

Materials

White Diamond, 18k Gold

Black Agate Fancy Shape Diamond White Gold Bracelet
Located in Bal Harbour, FL
Highly unique bracelet featuring oval, marquise, emerald cut and heart shape diamonds each
Category

2010s Unknown Modern Bracelets

Materials

White Diamond, 18k Gold

Vibrant 3.50ct Rubies, Emeralds, Sapphire, and Diamonds Necklace - IGI Certified
Located in רמת גן, IL
enriched by 2 marquise rubies (0.40ct), 1 round emerald (0.40ct), 3 marquise emeralds (0.40ct), and a
Category

2010s Israeli Pendant Necklaces

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold

Multi Gem Diamond Gold Cluster Ring
Located in Miami, FL
natural fancy brown yellow diamonds approx. 0.78 carats VS1-VS2 clarity, 3 genuine marquise emeralds
Category

Vintage 1960s Unknown Cocktail Rings

Materials

Blue Sapphire, Diamond, Emerald, Ruby

Emerald Marquise and White Diamond Marquise Bypass Ring in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 1.98 ct. emerald marquise with a 1.68 ct. white diamond marquise. Handmade in 18k yellow
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Yellow Gold

Marquise Shaped Emerald Yellow Gold Ring
Located in Greenwich, CT
Marquise-shaped Emerald set in a 18K Yellow Gold Ring. Approximately 1.25 carat. Finger size: 6.5
Category

21st Century and Contemporary Unknown Modern Signet Rings

Materials

Emerald, Gold, 18k Gold, Yellow Gold

White Gold and Marquise-Cut Emeralds Band
Located in PARIS, FR
Band in 18k (750°/°°) white gold set with 30 marquise-cut emeralds weighing approximately 2 carats
Category

Vintage 1980s Modern Band Rings

Materials

Emerald, 18k Gold, White Gold

18k White Gold Marquise Diamond and Emerald Ring
Located in New York, NY
18k Marquise Cut Diamond and Emerald Ring Condition: In good condition with some minor surface wear
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold

Goshwara Emerald Cushion Cab and Marquise Opal Earrings
By Goshwara
Located in New York, NY
Emerald Cushion Cab And Marquise Opal Flower Earring in 18k Yellow Gold, from 'G-One' Collection
Category

21st Century and Contemporary Indian Contemporary Stud Earrings

Materials

Emerald, Opal, 18k Gold

Emilio Jewelry Marquise Colombian Emerald Diamond Ring
By Emilio!
Located in New York, NY
. Showcasing a gorgeous 2.74ct Marquise cut Genuine Emerald Certified by C.Dunaigre as Colombian origin Based
Category

21st Century and Contemporary Three-Stone Rings

Materials

White Diamond, Emerald, 18k Gold, Platinum

Emerald Diamond Marquise Shield Ring
Located in London, England
A stunning Art Deco style platinum ring featuring a central marquise cut diamond estimated as 0.54
Category

Early 2000s Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Midcentury Marquise Cut Emerald and Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid Century Marquise Cut Emerald and Diamond Platinum Ring. Featuring three marquise cut
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Marquise Ring, Emerald and Diamonds
Located in PARIS, FR
timeless brilliance of precious stones, this 18-carat gold marquise ring with an emerald probably from
Category

Antique 1880s French Victorian Engagement Rings

Materials

Diamond, Emerald, 18k Gold

Set in 18K Gold, 16.45 carats Aquamarine, Emeralds Diamonds Chandelier Earring
By JEWEL HUB
Located in Hong Kong, HK
the Marquise Emeralds is 13.66 carats. The Emeralds are completely natural, without any treatment and
Category

21st Century and Contemporary Indian Modern Chandelier Earrings

Materials

Aquamarine, Diamond, Emerald, 18k Gold

Marquise Cut Colombian Emerald Solitaire Engagement Ring 18 Karat
Located in US
color Approx. 1.30 carat natural Colombian emerald marquise cut embedded in 18k white gold. Ring size
Category

2010s Unknown Contemporary Engagement Rings

Materials

Emerald, 18k Gold

Marquise Diamond Ring, Diamond Emerald Ring, Navette Diamond Ring
Located in McLeansville, NC
A vintage 18 karat yellow gold marquise diamond and emerald ring. This ring features a diagonal
Category

Vintage 1970s Fashion Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

3.15 Carats, Natural Zambian Emerald Marquise Diamonds Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and one of a kind Emerald engagement ring set in 18K Yellow Gold & Diamonds. The
Category

2010s Indian Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold

8.15 Carat GIA Certified Marquise Shape Diamond Emerald Ring, 1940
Located in Herzelia, Tel Aviv
8.15 Carat Marquise Diamond with Emerald ring. Marvellous creation from the time when jewelers
Category

Vintage 1940s Solitaire Rings

Materials

Diamond, Emerald, 18k Gold

Marquise Diamond Emerald Platinum Engagement Ring
Located in Beverly Hills, CA
The well cut marquise diamond weighs 0.94 carats, approximately H color and VS clarity. The French
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, Emerald, Platinum

Marquise Diamond Emerald Platinum Engagement Ring
Located in Beverly Hills, CA
The well cut marquise diamond weighs 0.94 carats, approximately H color and VS clarity. The French
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

11.51 Carats, Natural Zambian Emeralds Yellow Marquise Diamonds Stud Earrings
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and modern, Emerald Stud Earrings set in 18K WhiteGold & Yellow Diamonds. The
Category

21st Century and Contemporary Indian Modern Chandelier Earrings

Materials

Diamond, Emerald, 18k Gold

2.01 Carat Diamond Marquise and Emerald Pear Shape Cocktail Ring
By Royaal Stones Ltd
Located in Bangkok, Thailand
One of a kind, certified 2.01 carat H color SI1 clarity marquise shaped Diamond with 2.58 carat
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

0.40tcw 14K Marquise Cut Emerald Diamond Halo Cocktail Ring
Located in Jupiter, FL
, marquise-cut emerald, displaying a vivid dark green color, with perfect charactertistics. The center stone
Category

2010s American Modern Cocktail Rings

Materials

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

Antique Emerald Diamond Marquise Shaped Ring
Located in Chicago, IL
Nicholas Blumquist. The ring is centered with an emerald (approximately 0.25 ct) surrounded by antique
Category

Antique Late 19th Century Russian Victorian Cluster Rings

Materials

Emerald

4.00 Carat Old Marquise Cut Diamond Emerald Platinum Engagement Ring
Located in Beverly Hills, CA
, which are still being replicated today. Featuring a vibrant 4.00 carat old marquise cut diamond that is
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

18.07 Carat, Natural Zambian Emerald and Marquise Diamonds Cocktail Ring
Located in Hong Kong, HK
A classic Emerald and Diamond Cocktail Ring set in 18K gold. The weight of the emerald is 18.07
Category

2010s Hong Kong Classical Roman Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

Lustrous Zambian Emerald Fancy Marquise Cabochon Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 4.50 Carats Size: 16x9x5 MM Pieces: 1 Shape: Smooth Marquise Cabochon
Category

21st Century and Contemporary Zambian Art Deco Loose Gemstones

Materials

Emerald

18K Gold Zambian Emerald Marquise Mozambique Ruby Diamond Cocktail Ring
Located in Hong Kong, HK
A very gorgeous Zambian Emerald & Ruby Cocktail Ring set in 18K Gold & Diamonds. The Emerald is of
Category

2010s Hong Kong Modernist Cocktail Rings

Materials

Diamond, Emerald, Ruby, 18k Gold

Round Ruby, Emerald, Sapphire and Marquise Diamond Cocktail Earrings, 18k
Located in New York, NY
This luxurious pair of earrings feature exquisitely cut Round-Shape Ruby, Emerald, Sapphire and
Category

20th Century Clip-on Earrings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold

Art Deco Style Colombian Emerald Marquise Diamond Gold Cluster Earrings
Located in Napoli, NA
are set in the center with two beautiful Sparkling Marquise cut Diamonds, weighing 1 carat together
Category

Late 20th Century Art Deco Clip-on Earrings

Materials

Diamond, Emerald, 18k Gold, Gold

Emerald Marquise, White and Yellow Diamond Cocktail Ring in 18K Gold
Located in Los Angeles, CA
Beautiful 5.00 ct. emerald marquise with good quality white and yellow diamond rounds. Handmade in
Category

21st Century and Contemporary Solitaire Rings

Materials

Yellow Diamond, Emerald, 18k Gold

Antique Art Deco Platinum Old Marquise Diamond Emerald Statement Belly Bracelet
Located in Montclair, NJ
Here we have an incredibly designed and very well made antique art deco period diamond and emerald
Category

Vintage 1910s Art Deco Link Bracelets

Materials

Diamond, Emerald, Platinum

Yellow Gold Emerald Diamond Halo Bypass Ring, 10k Marquise Cut .24ctw
Located in Greensboro, NC
& 10k White Gold Stone Information Genuine Emerald Treatment: Oiling Carat: .22ct Cut: Marquise Color
Category

Antique 19th Century Unknown Cocktail Rings

Materials

Diamond, Emerald, Yellow Gold

Round Ruby, Emerald, Sapphire and Marquise Diamond Bombe Ring, 18k Yellow
Located in New York, NY
-shape ruby, emerald, sapphire and marquise diamonds, weighing in at approximately 3 carats. Possessing a
Category

20th Century Cocktail Rings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold

Set in 18K, 34.91 cts Zambian Cabochon Emerald Marquise Diamonds Cocktail Ring
Located in Hong Kong, HK
An exclusive Zambian Emerald Cabochon & Marquise Diamonds Cocktail Ring set in 18K Gold. The weight
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

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

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

1.79tcw Colombian Emerald-Marquise Cut Diamond Accent Statement Ring Gold 14K
Located in Jupiter, FL
Colombian emerald marquise cut displaying a charming and refreshing spring green color, excellent to very
Category

2010s Colombian Modern Cocktail Rings

Materials

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

Marquise Diamond Emerald Ring Gemstone Engagement 14 Karat White Gold Estate
Located in Torrance, CA
Stylish estate diamond & emerald ring crafted in 14 karat white gold. Marquise diamond is
Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Diamond, Emerald, 14k Gold, White Gold

Vintage 14k Gold Platinum Old Marquise Diamond Emerald Sapphire Pendant Necklace
Located in Montclair, NJ
Diamonds - 0.20ctw (approx.) (12) Natural Genuine Emeralds - Round Cut - Bezel Set - Green Color (4
Category

20th Century Pendant Necklaces

Materials

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

Set in 18K Gold, Zambian Emerald and Marquise Baguettes Diamonds Cocktail Ring
Located in Hong Kong, HK
A classic emerald and diamond cocktail ring set in 18K white gold. The Emerald is Zambian in origin
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

Studio Rêves 18 Karat Gold Emerald and Marquise Diamond Tennis Bracelet
By Studio Rêves
Located in Mumbai, Maharashtra
F-G/ VS-SI brilliant cut diamonds and emerald tennis bracelet The all-encompassing elegance of
Category

2010s Indian Contemporary Tennis Bracelets

Materials

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

18 Karat White Gold Emerald Small Marquise Huggy Earring Ring Set
Located in Los Angeles, CA
. All our rings are standard U.S size: Size 7. Earring: 4 Marquise Diamonds = 0.11 ct 4 Emerald
Category

2010s American Stud Earrings

Materials

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

Marquise Cut Natural Emerald Floral Motif Stud Earrings in 14k Yellow Gold
By VR Jewels
Located in New York, NY
, luxurious look featuring marquise cut emerald. Emerald enhances intellectual capacity of the person
Category

21st Century and Contemporary American Modern Stud Earrings

Materials

Emerald, Gold, 14k Gold, Yellow Gold

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Marquise Emerald For Sale on 1stDibs

On 1stDibs, you can find the most appropriate marquise emerald for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Yellow Gold. You can easily find a 181 antique edition and 212 modern creations to choose from as well. Making the right choice when shopping for a marquise emerald 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 piece, .5 Carat and 1 Carat are consistently popular carat weights. Creating a marquise emerald has been a part of the legacy of many jewelers, but those produced by Georgios Collections Inc, LB Exclusive and OGI Ltd are consistently popular. A marquise cut version of this piece has appeal, but there are also emerald cut and pear cut versions for sale. When shopping for a marquise emerald, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Marquise Emerald?

The price for a marquise emerald starts at $175 and tops out at $750,000 with these rings, on average, selling for $5,584.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.