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Faye Kim 18 Karat Gold Diamond Comet Ring
By Faye Kim
Located in Darien, CT
Handcrafted in 18k gold, this spectacular one of a kind Faye Kim diamond comet ring is certain to
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Gold, 18k Gold

Platinum Round & Baguette Diamond Comet Brooch
Located in Toronto, CA
Round and Baguette Diamond Platinum Brooch 10 Round Brilliant Cut Diamonds= 5.28ct 30 Round
Category

21st Century and Contemporary Brooches

Materials

Diamond, Platinum

Georgian Halley's Comet Rose Cut Diamond Brooch
Located in London, GB
Here we have a charming little Halley's Comet brooch taken from the Georgian period. Crafted from a
Category

Antique 18th Century Georgian Brooches

Materials

Diamond, Gold, 18k Gold, Silver

Georgian 1.40 Ct Diamond Rare Comet Brooch
Located in Napoli, IT
Celestial Halley’s Comet A rare and stunning example of Georgian Halley’s comet brooch, superb
Category

Antique 1830s European Georgian Brooches

Materials

Diamond, 18k Gold, Silver

1.00 Carat Diamond White Gold Comet Design Earrings
Located in Stamford, CT
Celestial comet design spray earrings circa 1865 set with 28 round brilliant cut diamonds in 14k
Category

Antique 1860s More Earrings

Materials

Diamond, Gold, 14k Gold, White Gold

Comet Drop Earrings in 18KT Gold, Ruby & Natural Diamonds
By Estaa
Located in Mumbai, IN
These exquisite ruby earrings capture the fiery brilliance of a comet blazing across the night sky
Category

2010s Indian Contemporary Drop Earrings

Materials

Diamond, Ruby, 18k Gold, Silver, Gold

Sasportas Sapphire Citrine Diamond Comet Clip Brooch, circa 1940s
By Sasportas
Located in Idar-Oberstein, DE
Beautiful Retro Sapphire Citrine Diamond Comet Clip Brooch, ca. 1940s by Sasportas The retro comet
Category

Mid-20th Century French Retro Brooches

Materials

Citrine, Diamond, Sapphire, 18k Gold

14 Karat, Madeira Garnet and Diamond Multi-Comet Necklace
By Martha Seely
Located in Carlisle, MA
This is a very special necklace - made in 14k with Madeira garnets and diamonds. The joyful
Category

2010s American Contemporary Choker Necklaces

Materials

Diamond, Garnet, 14k Gold

Diamond Ruby Platinum Starburst Comet Bypass Cluster Cocktail Ring
Located in Miami Beach, FL
Platinum diamond and ruby cocktail ring featuring with a .65c center diamond (VS2 H-I) surrounded
Category

Vintage 1970s Cluster Rings

Materials

Diamond, Ruby, Platinum

Towards the Stars Comet Earrings
By Sybarite Jewellery
Located in London, GB
the warmth of the metal with the brilliance of sparkling white diamonds. Each earring is designed to
Category

21st Century and Contemporary British Contemporary Stud Earrings

Materials

White Diamond, 18k Gold, Yellow Gold

Art Deco Wedderien Natural Sapphire Diamond Platinum Comet Ring, GIA
Located in New York, NY
Fine Art Deco Wedderien natural sapphire, diamond and platinum Comet engagement ring Early 20th
Category

Early 20th Century American Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Toward the Stars Comet Ring
By Sybarite Jewellery
Located in London, GB
, adorned with sparkling white diamonds that glimmer with every movement. Slip this enchanting ring onto
Category

21st Century and Contemporary British Contemporary Cocktail Rings

Materials

White Diamond, 18k Gold, Yellow Gold

Stunning Multi Gemstone Diamond Gold Comet Statement Pendant Necklace
By Coach House
Located in Montreal, QC
Captivating Genuine Gem set Comet Pendant, beautifully arranged and set with: a Peridot, weighing
Category

Late 20th Century Unknown Drop Necklaces

Materials

Peridot, Topaz, Tourmaline, 14k Gold

Edwardian Platinum & 18K Gold Opal and Old Cut Diamond Halley’s Comet Brooch
Located in Staines-Upon-Thames, GB
An Art Deco opal, diamond, platinum, and yellow gold brooch, set with fourteen old cut diamonds
Category

Vintage 1910s Edwardian Brooches

Materials

Diamond, Opal, 18k Gold, Yellow Gold, Platinum

3.16 Carat Old European Cut Diamond Halley's Comet 18k Gold Pendant Brooch
Located in Chevy Chase, MD
As bright as the stars! This Halley's Comet or starburst pendant brooch is designed with one 0.75
Category

Antique Late 19th Century Unknown Victorian Pendant Necklaces

Materials

Diamond, 18k Gold

Antique Flower Comet Brooch Pin Diamonds solid 18K Gold Silver / 3 gr
Located in SE
Swedish Flower ( or Comet ?) or a shooting Star brooch dating from ca. early 20th century with
Category

Antique Early 1900s Swedish Renaissance Revival Brooches

Materials

Diamond, 18k Gold, Silver

14 Karat Gold and Diamond Comet Ear Climbers with Fancy Cut Madeira Garnet
By Martha Seely
Located in Carlisle, MA
Made in 14ky with diamonds, these are perfect little ear climber earrings, designed for daily wear
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Garnet, 14k Gold

Certified 0.36 Carat Diamond Set in 18 Karat Yellow Gold "Comet" Solitaire Ring
Located in Sherman Oaks, CA
Like a comet with a diamond head and a golden tail, this sleek and modern ring features a bright
Category

Early 2000s Israeli Contemporary Solitaire Rings

Materials

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

White South Sea Pearl Diamond Halo Comet Form Pink Red Spinel 18 Karat Gold Ring
By Galt & Bro. Jewelers
Located in Oakton, VA
AAA Quality South Sea White Pearl Beautiful Flying Comet Shape Striking Silvery Hue with Light
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Pearl, Spinel, South Sea Pearl, Tourmaline, Natural Pearl, Cultured Pear...

Twin Diamond Ring in Platinum
Located in New York, NY
diamonds, resembling mirror-image comets, are accentuated by baguette diamond tails of 1.20tcw. Selling
Category

Vintage 1930s Art Deco Fashion Rings

Materials

Diamond, Platinum

Antique Old Mine-cut Diamond Star Brooch
Located in New York, NY
Macklowe Gallery Curator's Notes: The popular passion for star and comet-themed diamond and gem-set jewelry
Category

Antique Late 19th Century English Victorian Brooches

Materials

Diamond, Gold, Silver

Oval Cabochon Star Sapphire and Diamond Cocktail Ring in 14 Karat White Gold
Located in Scottsdale, AZ
the star sapphire coloration is reminiscent of a nebula or comet. Its star sapphire and diamond
Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

Star Sapphire, Sapphire, White Diamond, Diamond, White Gold, 14k Gold, Gold

Chanel Watch Mademoiselle Prive Quartz
By Chanel
Located in West Palm Beach, FL
Marquetry And Comet Motif Diamond Dial - White Satin Strap 37.5mm 18K white gold case 570 brilliant-cut
Category

21st Century and Contemporary Wrist Watches

Materials

Diamond, 18k Gold, Yellow Gold

Diamond and Ruby Comet Brooch
Located in Paris, FR
Comet brooch set with an old-mine cut diamond on a pave-set of rubies rimmed with diamonds. 14ct
Category

20th Century European Collectible Jewelry

Diamond and Ruby Comet Brooch
Diamond and Ruby Comet Brooch
H 1.19 in W 1.58 in D 0.4 in
Handmade 18 Karat Yellow Gold and Diamond "Comet" Earrings
Located in Washington, DC
Shah & Shah handmade 18k yellow gold and diamond Comet earrings with 1.44cts of colorless round
Category

21st Century and Contemporary Modern Dangle Earrings

Materials

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

18 Karat White Gold and Diamond "Comet" Dangle Earrings
Located in Washington, DC
Shah & Shah's 18 karat white gold and diamond dangle earrings from the "Comet Collection." These
Category

21st Century and Contemporary American Modern Dangle Earrings

Materials

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

Diamond and 18K Yellow Gold Comet Drop Pendant Earrings
By Geoffrey Good
Located in Hudson, NY
Handmade diamond Comet Drops in 18k Yellow Gold, from our Galaxy collection. 1.62” long and 0.36
Category

2010s North American Contemporary Drop Earrings

Materials

Diamond, Yellow Gold

18K White Gold Kailis Comet Lariat Diamonds Australian Pearls Necklace
Located in Madrid, ES
Kailis' "Comet Lariat" necklace, from the Ethereal collection, formed by 4 white gold strings
Category

21st Century and Contemporary Australian Drop Necklaces

Materials

Diamond, Natural Pearl, 18k Gold, White Gold

Geoffrey Good Galaxy "Long Comet" Natural Diamond Earrings in 18k White Gold
By Geoffrey Good
Located in Hudson, NY
and movement of celestial phenomenons, these 18k white gold drop earrings are set with (87) diamonds
Category

2010s Contemporary Drop Earrings

Materials

Diamond, 18k Gold

Man in the Moon Diamond Gold Pin
Located in Boston, MA
18K YELLOW GOLD BROOCH. MOON WITH COMET HAS BURNISHED SET DIAMONDS. DIAMONDS = .47CT
Materials

Diamond, 18k Gold

Geoffrey Good Galaxy Natural Diamond Chandelier Earrings
By Geoffrey Good
Located in Hudson, NY
, Geoffrey's contemporary version features 3 articulated diamond comet pendants suspended from 3 graduated
Category

2010s American Contemporary Chandelier Earrings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

1940s Italian Retro Diamond Granulated Gold Clip Post Earrings
Located in Dusseldorf, NRW
later replacements from the 1970s Italy, 1940s A stylized comet’s tail swirling around a diamond set
Category

Mid-20th Century Italian Retro Stud Earrings

Materials

White Diamond, 18k Gold, 14k Gold

Bernhard H. Mayer Golden Comets Diamond 18K Two Tone Gold Pendant
By Bernhard H. Mayer
Located in Dubai, Al Qouz 2
like cascading comets and meticulously adorned with finely cut diamonds. The piece comes with hallmark
Category

2010s German Contemporary Pendant Necklaces

18K White Gold Shooting Star Diamond 10.50 Carat Ruby Cocktail Ring
Located in Los Angeles, CA
Sizing. Featuring a Handmade One of a Kind Shooting Star/Comet Diamond and Ruby Cocktail Ring Entirely
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

1970s Coral and Diamond Comet Necklace
Located in San Antonio, TX
18K gold pendant necklace set with diamonds and coral. 18K ITALY.
Category

Vintage 1970s Italian Pendant Necklaces

Materials

Coral, Diamond, 18k Gold

Marilyn Cooperman Pearl and Yellow Diamond Comet Pin
By Marilyn F. Cooperman
Located in New York, NY
Magnificent Marilyn Cooperman 18k Yellow Gold, Patinated Silver and South Sea Pearl Comet Pin
Category

Vintage 1980s American Brooches

Materials

Yellow Diamond, South Sea Pearl, 18k Gold, Sterling Silver

Chanel 18 Karat White Gold Diamond Comet Star Necklace
By Chanel
Located in Boca Raton, FL
Style: CHANEL 18k White Gold Diamond Comet Star Necklace Material: 18k White Gold Total Weight
Category

2010s Pendant Necklaces

Materials

Diamond, White Gold

Chanel Comet Sapphire Diamond Two Color Gold Bangle Bracelet
By Chanel
Located in Holland, PA
18k Yellow And White Gold Diamond Yellow And Blue Sapphire Comet Bangle Bracelet by Chanel. With
Category

1990s French Bangles

Materials

Blue Sapphire, Diamond, Yellow Sapphire, 18k Gold

Kieselstein-Cord Diamond Crescent Moon Comet Yellow Gold Brooch
By Barry Kieselstein-Cord 1
Located in Southampton, PA
scintillating diamonds that weigh 0.50 carats in total.
Category

20th Century Brooches

Materials

White Diamond, 18k Gold, Yellow Gold

Victorian 1835 Opal Diamond 14 Karat Gold Halley's Comet Brooch
Located in Philadelphia, PA
Brooch designed to commemorate the 1835 viewing of Halley's Comet Featuring a prong set cabochon
Category

Antique 1830s Victorian Brooches

Materials

Diamond, Opal, 14k Gold

Antique Gold Georgian Period Halley’s Comet Rose Cut Diamond Cluster Ring
Located in London, GB
This ornate diamond cluster was made circa the 1835 sighting of Halley’s comet, a frequently
Category

Antique Early 19th Century English Georgian Cluster Rings

Materials

Diamond, Gold

14 Karat Comet Pendant with Oregon Sunstone, Fire Opals and Diamonds
By Martha Seely
Located in Carlisle, MA
diamond melee in varying sizes (to represent the comet tails). The pendant is just over 2.5" long. It
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Other, Diamond, White Diamond, 14k Gold

Art Deco Platinum 5.0 Carat Mixed Cut Diamond Comet Earrings, circa 1920s
Located in New York, NY
Antique Platinum and 5.0ct Mixed Cut Diamond Comet Earring 1920s The 1910 appearance of Halley’s
Category

20th Century Unknown Art Deco Clip-on Earrings

Materials

Diamond, Platinum

1910 Art Nouveau Emerald Ruby Diamond 14 Karat Gold Halley's Comet Brooch
Located in Philadelphia, PA
Bar brooch is designed as a highly stylized depiction of Halley's comet Head is a cluster
Category

Vintage 1910s Art Nouveau Brooches

Materials

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

Pearl Comet Earrings in 14ky with Diamond Baguette and Gold and Silver Chains
By Martha Seely
Located in Carlisle, MA
from a beautiful pearl. The top part of the post earring is a single, white diamond baguette. These
Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Pearl, Black Pearl

Modern 18 Karat White Gold 0.40 Carat VVS-VS Diamond Star Comet Cocktail Ring
Located in Vilnius, Vilniaus apskr.
This is a modern design star comet cocktail ring crafted in 18K white gold. Circa 2000. The piece
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, White Gold, 18k Gold

Chanel Comete Diamond Gold Ring
By Chanel
Located in Southampton, PA
serve as compliment to the bold diamond comet cutting across the plain of this dazzling design. The ring
Category

21st Century and Contemporary French More Rings

Materials

White Diamond, 18k Gold, White Gold

Chanel High Jewelry White Gold and Diamond Bracelet, Les Intemporels Collection
By Chanel
Located in Weston, MA
diamond bracelet. Comets, stars and moons were some of Coco Chanel’s favorite design motifs and she would
Category

21st Century and Contemporary Art Deco Cuff Bracelets

Materials

Diamond, White Diamond, 18k Gold, White Gold

Antique Edwardian Era Diamond Brooch Pin
Located in Chicago, IL
million mile long tail of the comet. The biggest diamond is approximately 0.72 ct (K color, SI2 clarity
Category

Early 20th Century Russian Edwardian Brooches

Art Nouveau Pendant Brooch
Located in London, GB
plique a jour & diamond with comet detail that was fashionable throughout the early 1900's.
Category

Antique Early 1900s French Art Nouveau Brooches

Materials

Diamond, Opal, Pearl, 18k Gold

Art Nouveau Pendant Brooch
Art Nouveau Pendant Brooch
H 2.6 in W 1.82 in
Gemstone Diamond Gold Comet Statement Earrings
Located in Montreal, QC
A captivating pair of Gem set Comet Earrings, beautifully arranged and each earring set with an
Category

Late 20th Century Unknown Modernist Clip-on Earrings

Materials

Aquamarine, Diamond, Onyx, 14k Gold

English Edwardian Diamond Silver and Gold "Halley's Comet" Brooch
Located in New York, NY
An English Edwardian silver top/18 karat gold brooch with diamonds. The 'Halley's Comet' brooch is
Category

Antique 1860s English Edwardian Brooches

Materials

Diamond, 18k Gold, Silver

Chanel Comet Star Diamond Sapphire White Gold Pendant Necklace
By Chanel
Located in Holland, PA
18k White Gold Diamond And Sapphire Comete Star Pendant Necklace by Chanel. With 4 round brilliant
Category

20th Century French Pendant Necklaces

Materials

Diamond, Sapphire, White Gold

Aquamarine Topaz and Diamond Gem Set Comet Gold Statement Ring
By Coach House
Located in Montreal, QC
A Captivating Gem set Comet Runway Ring, beautifully arranged and set with step-cut Aquamarine in
Category

Vintage 1980s Art Deco Cocktail Rings

Materials

Aquamarine, Diamond, Topaz, 14k Gold, Gold

Diamond raw Strand total 55 carat natural colors 5-6 mm Seize like small comets
Located in Viena, Viena
...either two bracelets or a necklace...., a natural gray diamond strand in the form of rough
Category

2010s Unknown Modern Loose Gemstones

Materials

Diamond

CHANEL White Gold Mademoiselle Charm Bracelet
By Chanel
Located in Los Angeles, CA
(4) charms Cometes Diamond Heart Charm, Camelia Black Onyx Flower, and Matelasse Chanel Number 5. All
Category

20th Century French Charm Bracelets

Materials

Diamond, White Gold

Diamond Ruby 'Comet' Drop Earrings
Located in Greenwich, CT
Diamond and ruby almond-shaped drop earrings, designed as a full-cut round diamond surrounded by
Category

21st Century and Contemporary American Drop Earrings

Materials

Diamond, Ruby, White Diamond, Platinum

Chanel Cometes Gold Diamond Pearl Ring
By Chanel
Located in Lambertville, NJ
Modern 18k white gold ring by Chanel from Cometes collection, featuring 11mm pearl ,surrounded by
Category

21st Century and Contemporary French More Rings

Materials

Cultured Pearl, Diamond, 18k Gold

Comet Necklace
By Rebecca Koven
Located in Fifth Avenue, NY
A necklace composed of 18kt yellow gold and diamond cut out beads, sterling silver craters and
Category

21st Century and Contemporary American Contemporary Chain Necklaces

Materials

Diamond, Sterling Silver, 18k Gold

Engel Brothers Diamond Platinum Comet Earrings
Located in Dallas, TX
All platinum, including posts and backs, these lovely earrings set with baguette and round diamonds
Category

1990s American Clip-on Earrings

Materials

Diamond, Platinum

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Comet Diamond For Sale on 1stDibs

Find the exact comet diamond you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from gold, 14k gold and 18k gold — can elevate any look. Find an antique version now, or shop for 6 vintage or 8 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a comet diamond may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. A comet diamond from Martha Seely, Bernhard H. Mayer and Coach House — each of whom created a beautiful version of this treasured accessory — is worth considering. A comet diamond can be a stylish choice for most occasions, but diamond rings, from our inventory of 11, can add a particularly distinctive touch to your look, day or night. A mixed cut version of this piece has appeal, but there are also round cut and baguette cut versions for sale. When shopping for a comet diamond, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Comet Diamond?

The price for a comet diamond starts at $775 and tops out at $44,445 with these necklaces, on average, selling for $4,818.

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.