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Gold Ruby and Diamond Lariat Style Heart Necklace
Located in Pikesville, MD
approximately G color, SI2 clarity. Ruby total weight is approximately .30 carats. Necklace lays flat while worn
Category

Vintage 1970s Italian Drop Necklaces

Materials

White Diamond, Ruby, 14k Gold

Gold and 30 Carats Peridot Gübelin Vintage Necklace
By Gubelin
Located in Saint-Ouen, FR
beautiful and big Peridot of 30 carats estimate. Mark for gold: the owl, mark of the maker. The size is 42
Category

Vintage 1940s Swiss Necklace Enhancers

Materials

Peridot, Gold, 18k Gold

Platinum and 30 Carat Diamonds French Necklace
Located in Saint-Ouen, FR
Platinum and 30 Carats Diamonds French Necklace Wonderful necklace, made in France circa 1960
Category

Vintage 1960s French Link Necklaces

Materials

Diamond, Platinum

30 Carat Diamonds-by-the-Yard Necklace
Located in San Francisco, CA
Drape your neck in spectacular sparkle with this dazzling diamonds-by-the-yard necklace. Twenty
Category

21st Century and Contemporary Unknown Modern Chain Necklaces

Materials

Diamond, Platinum

30 Carat Diamond Cluster Necklace, 18K Rose Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Rose Gold Length: 17
Category

2010s American Choker Necklaces

Materials

Diamond, 18k Gold, Rose Gold

30 Carat Diamond Cluster Necklace, 18K Rose Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Rose Gold Length: 16
Category

2010s American Choker Necklaces

Materials

Diamond, 18k Gold, Rose Gold

30 Carat Diamond Cluster Necklace, 18K Yellow Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Yellow Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, Yellow Gold

30 Carat Diamond Cluster Necklace, 18K White Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: White Gold Length: 18
Category

2010s American Choker Necklaces

Materials

Diamond, White Gold

30 Carat Diamond Cluster Necklace, 18K Yellow Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Yellow Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, Yellow Gold

30 Carat Diamond Cluster Necklace, 18K Rose Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Rose Gold Length: 18
Category

2010s American Choker Necklaces

Materials

Diamond, 18k Gold, Rose Gold

30 Carat Diamond Cluster Necklace, 18K Yellow Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Yellow Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, Yellow Gold

30 Carat Diamond Cluster Necklace, 18K White Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: White Gold Length: 17
Category

2010s American Choker Necklaces

Materials

Diamond, White Gold

30 Carat Diamond Cluster Necklace, 18K Yellow Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Yellow Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, Yellow Gold

30 Carat Diamond Cluster Necklace, 18K White Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: White Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, White Gold

30 Carat Diamond Cluster Necklace, 18K Rose Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: Rose Gold Length: 15
Category

2010s American Choker Necklaces

Materials

Diamond, 18k Gold, Rose Gold

30 Carat Diamond Cluster Necklace, 18K White Gold
Located in Los Angeles, CA
Diamonds not Lab Grown) Diamond Carat: 30 Diamond Clarity: VS Diamond Color: F Color: White Gold Length
Category

2010s American Choker Necklaces

Materials

Diamond, White Gold

High Jewelry Diamond Necklace 24.71 Carat 34, 30 Gr. 18K White Gold
Located in New York, NY
-set in shimmering 18k white gold. This classic infinity necklace has maximum sparkle at 24.71 Carats
Category

2010s Unknown Art Deco Beaded Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

30 Carat Green Amethyst Quartz Gold Hand-Carved Pendant
By emma Quist
Located in Scottsdale, AZ
Approximately 30 carats of Green Amethyst Quartz with checkerboard faceting (oval measures 25mm x
Category

21st Century and Contemporary American Necklace Enhancers

Materials

Amethyst, 18k Gold

Pear-Shaped Diamonds High Jewelry Necklace 24.71 Carat 34, 30 Gr. 18K White Gold
Located in New York, NY
-set in shimmering 18k white gold. This classic infinity necklace has maximum sparkle at 24.71 Carats
Category

2010s Unknown Art Deco Beaded Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

High Jewelry Necklace 24.71 Carat Pear-Shaped Diamonds 34, 30 Gr. 18K White Gold
Located in New York, NY
-set in shimmering 18k white gold. This classic infinity necklace has maximum sparkle at 24.71 Carats
Category

2010s Unknown Art Deco Beaded Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

.30 Carat Round Brilliant Diamond Necklace 14k White Gold Curved Bar Adjustable
Located in Greensboro, NC
- SI2 Color: G - H Cut: Round Brilliant Total Carats: 0.30ctw Attached Pendant: 5/32" (3.5mm) tall
Category

21st Century and Contemporary Unknown Necklace Enhancers

Materials

Diamond, 14k Gold, White Gold

.30 Carat Old Mine Cut Diamond Necklace
Located in Miami, FL
Beautiful vintage necklace featuring an old miner cut diamond weighing approximately .30cts, G
Category

Early 20th Century Unknown Victorian Pendant Necklaces

Materials

Diamond, 10k Gold, Rose Gold, Yellow Gold

.30 Carat Emerald Cultured Pearl Midcentury White Gold Necklace
Located in Stamford, CT
1960's Cultured pearl necklace, 7.5-8m each with an 18k white gold pearl and emerald catch. White
Category

Vintage 1960s More Necklaces

Materials

Emerald, Pearl, Cultured Pearl, Gold, 18k Gold, White Gold

30 Carat Diamond Platinum Link Necklace Bracelet Set
Located in Napoli, NA
-owned - Excellent METAL: Platinum STONE: Diamonds 30 total carats DESIGN ERA: Circa 1950 WEIGHT: 71.68
Category

Vintage 1950s Link Necklaces

Materials

Diamond, Platinum

Platinum 30 Carats Old Cut Diamond Chain Necklace
Located in New York, NY
necklace mounted with 175 old cut diamonds. 30 carats in old world cut round cuts that glisten in every
Category

20th Century American Modern Chain Necklaces

Materials

Diamond, Platinum

Seidengang .30 Carat Diamond Ruby Yellow Gold Pin Pendant Necklace
By SeidenGang
Located in Stamford, CT
Vintage Byzantine style Seidengang heavy textured 18k gold necklace and pin and pendant necklace
Category

Late 20th Century Pendant Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold

.30 Carat Diamond Pink Sapphire White Gold Heart Pendant Necklace
Located in Stamford, CT
Petite reversible diamond and pink sapphire open-heart pendant in 14k white gold. Chain, 16.5 inches in length. 12 round brilliant cut diamonds, H-I SI-I approx. .30cts 12 round pi...
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Sapphire, Pink Sapphire, Gold, 14k Gold, White Gold

GIA Certified .30 Carat Sapphire Diamond Pearl Butterfly Pendant Necklace
Located in Stamford, CT
Diamond, pearl and sapphire butterfly pendant necklace. GIA certified natural no heat blue sapphire
Category

Antique Mid-19th Century Pendant Necklaces

Materials

Diamond, Pearl, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold, Yel...

London Blue 30 Carat Oval Topaz Diamond Pendant Necklace
Located in Boca Raton, FL
Gorgeous London Blue Topaz Diamond Pendant Necklace. The 30 carat oval cut blue topaz is set in a
Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

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

Art Deco 30 Carat Amethyst Onyx and Pearl Necklace
Located in Santa Barbara, CA
, rich violet amethyst of an impressive 30 carats. The classic "target design" with intricate calibrè
Category

Vintage 1920s Art Deco Pendant Necklaces

Materials

Amethyst, Onyx, Pearl, 18k Gold, White Gold

30 Carat Kunzite and Diamond Ring Converts To A Necklace
Located in Santa Barbara, CA
ginormous, 30 carat blush pink Kunzite, this heirloom was custom made by a master jeweler for an Encino
Category

Vintage 1980s Contemporary Pendant Necklaces

Materials

Diamond, Kunzite, Gold, 14k Gold, Yellow Gold

30 Carat Diamond Tennis Set Includes Necklace, Bracelet, Earrings 18K Gold
Located in Media, PA
of 102 Grams of 18K Yellow Gold & Over 30 Carats of Diamonds it is spectacular! The set includes
Category

2010s Beaded Necklaces

Materials

Diamond, 18k Gold

30" Diamond Station Necklace 12.45 Carats Total Weight in 18k White Gold
Located in La Jolla, CA
30" Long Diamond Station Necklace 12.45 Carats Total Weight in 18k White Gold Long Diamond
Category

21st Century and Contemporary North American Chain Necklaces

Materials

Diamond, 18k Gold, White Gold

.30 Carat Diamond Cross Necklace in 14 Karat Yellow Gold, Gold Chain
By Five Star Jewelry
Located in Austin, TX
This diamond cross necklace is the perfect diamond accessory! This diamond cross has a very modern
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, White Diamond, 14k Gold

White Gold Diamond Curved Bar Necklace, 14k Round Brilliant .30 Carat Adjustable
Located in Greensboro, NC
Metal Content: 14k White Gold Stone Information: Natural Diamonds Total Carats: .30ctw Cut
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Hearts on Fire .30 Carat Round Brilliant Diamond Halo Necklace, 18k White Gold
By Hearts On Fire
Located in Greensboro, NC
Originally retailing for $2990, this NEW Hearts On Fire necklace was purchased in a closeout, and
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

1980s 18K Gold Collar Necklace with 13 Carats of Diamonds and 30 White Pearls
Located in Beverly Hills, CA
-SI clarity and 30 lustrous white pearls. The necklace measures 15.5 inches in length and 0.88 inches
Category

Late 20th Century Unknown Retro Choker Necklaces

Materials

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

30 Carat Amethyst Diamond Gold Pendant
Located in Firenze, IT
, the necklace composed of a tapering line. The pendant and the necklace are mounted in 18Kt white gold
Category

21st Century and Contemporary Italian Modern Drop Necklaces

Materials

Amethyst, Diamond, 18k Gold, White Gold

30 Carat Opal Diamond Gold Heart Pendant
Located in Aspen, CO
. This opal which is in fine condition with no crazing weighs approximately 30 cts. It is surrounded by
Category

Mid-20th Century American Drop Necklaces

Materials

Diamond, Opal

Pretty White Gold Chain, Diamonds Est .30 Carat
Located in Canterbury, England
Our attractive pendant and chain of 9k white gold features a solitaire diamond of est. .30ct
Category

2010s Pendant Necklaces

Materials

Diamond, White Gold

Pretty White Gold Chain, Diamonds Est .30 carat.
Located in Canterbury, England
Our attractive pendant and chain of 9k white gold features a solitaire diamond of est. .30ct
Category

2010s Pendant Necklaces

Materials

Diamond, White Gold

14 Karat White Gold Seahorse Pendant, Sapphires .30 Carat and Diamonds .12 Carat
Located in San Diego, CA
14kt White Gold Seahorse Pendant, Sapphires .30cttw and Diamonds .12cttw, 16 Inch Chain, Like New, 14mm x 19mm Size, 3.5 Grams w/ Chain. The chain .5mm wide has a lobster clasp and ...
Category

2010s Unknown Modern Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, White Gold

30 Carat Oval Brazilian Emerald 3 Carat Diamond Tennis Necklace 14 Karat Gold
Located in New York, NY
Presenting the exquisite 30 Carat Oval Brazilian Emerald & 3 Carat Diamond Tennis Necklace in 14
Category

2010s Link Necklaces

Materials

Diamond, Emerald, 14k Gold

Bolo Adjustable Necklace .30 Carat Natural Diamonds 14 Karat
Located in New York, NY
Bolo Form classic Adjustable Bolo Necklace. .30ct. Natural Round Diamond H-color Vs-2 clarity
Category

2010s American Chain Necklaces

Materials

Diamond, 14k Gold, White Gold

30 Carat Blue Green Aquamarine Sterling Silver Pendant
By Aria Jewelry Design
Located in Raleigh, NC
This brilliant 30 carat translucent bluegreenish natural Aquamarie with slightly visible natural
Category

21st Century and Contemporary American Necklace Enhancers

Materials

Aquamarine, Sterling Silver

14K White Gold .30 Carat Sapphire Diamond Dolphin Pendant Necklace
Located in Eagan, MN
This is a very different type of dolphin pendant. It's very unique in that it has .30 carats of
Category

2010s Unknown Art Deco Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, White Gold

.30 Carat Tiffany Co. Diamond and Platinum Aria Three-Stone Pendant Necklace
By Tiffany Co.
Located in Scottsdale, AZ
trio design. The diamonds are F-G in color, VS1-VS2 in clarity and total .30 carats. The platinum
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, Platinum

14K White Yellow Gold .30 Carat 4-Stone Diamond Pendant Necklace 18"
Located in Eagan, MN
. The largest diamond is 3 mm round and all 4 diamonds total .30 carats and are all nice and bright
Category

2010s American Art Deco Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Finest Quality 30 Carat Burmese Ruby and D Color Diamond 18 Karat Gold Necklace
Located in Tustin, CA
Very opulent, ladies estate 18 karat white gold, 30 carat Burmese ruby and diamond necklace
Category

20th Century American Artisan Drop Necklaces

Materials

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

30 Ct Colombian Emerald Diamond Bridal Collar Necklace 18 Karat White Gold
Located in New York, NY
Approximately 30 Ct of Oval Colombian Emerald & Diamond Bridal Collar Necklace 18 Karat White Gold
Category

20th Century Drop Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

Tiffany Co. Elsa Peretti Diamonds by the Yard Necklace Platinum 2.70 Cts 30"
By Tiffany Co.
Located in New York, NY
This Tiffany & Co. Elsa Peretti Diamonds by the Yard Necklace, from Dec 2022, is truly stunning
Category

21st Century and Contemporary Chain Necklaces

Materials

Diamond, Platinum

Paloma Picasso 100 Carat Citrine Pendant and 30 Inch Chain
By Paloma Picasso
Located in Carmel-by-the-Sea, CA
A large orb-like pendant of citrine weighing approximately 100 carats is capped with a golden bale
Category

Late 20th Century Drop Necklaces

Materials

Citrine, Yellow Gold

Set KLM 14k Yellow White Gold .30 Carat Diamond Pave Pendant Earrings
Located in Eagan, MN
This is just an exquisite set of jewelry. Both pieces are made by KLM and are stamped "14k KLM". The setting is both White and Yellow gold and it is on a fabulous 14k Yellow Chain ...
Category

2010s American Art Deco Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold, White Gold

Retro Gold 30 Carat Natural CAB Aquamarine Colorless Diamond Pendant by Gump s
Located in Los Angeles, CA
A magnificent 18k yellow gold pendant signed by Gumps. The center is an approximate 30 carat
Category

Vintage 1980s North American Retro Pendant Necklaces

Materials

Aquamarine, Diamond, Gold, 18k Gold

Large 30 Carat Madeira Citrine Pendant Vintage 14 Karat Gold Fine Emerald Cut
Located in Torrance, CA
gold. The citrine measures 24mm x 15mm (estimated at 30 carats). The citrine is in good condition
Category

Mid-20th Century Unknown Modern Pendant Necklaces

Materials

Citrine, 14k Gold, Yellow Gold

JBD 14K YGold VS2 Diamond Pendant .30 Carat w 14K YG Chain 18.5
Located in Eagan, MN
. It has a diamond accent with is 4.28 mm and the Clarity is VS2 and the color is G. It is .30 carats
Category

2010s American Art Deco Pendant Necklaces

Materials

Diamond, Pearl, 14k Gold, Yellow Gold

0.77 Carat Yellow Diamond 18 Karat Two-Tone Gold Pendant Necklace
Located in New York, NY
Diamond 0.77 Carat, SI Clarity and is surrounded by 19 Yellow Diamonds 0.17 Carat & 30 Round Diamonds 0.23
Category

20th Century Chinese Art Deco Pendant Necklaces

Materials

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

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30 Carat Necklace For Sale on 1stDibs

Find the exact 30 carat necklace you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using Gold, White Gold and 18k Gold. Find an antique version now, or shop for 76 vintage or 182 modern creation for a more contemporary example of these cherished accessories. Finding the perfect 30 carat necklace may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. There have been many well-made iterations of the classic 30 carat necklace over the years, but those made by LB Exclusive, Luigi Ferrara and Tiffany Co. are often thought to be among the most beautiful. A 30 carat necklace can make for a versatile accessory, but a selection from our variety of 209 Diamond versions can add an especially stylish touch. A round cut version of this piece has appeal, but there are also oval cut and pear cut versions for sale. If you’re browsing our inventory for a 30 carat necklace, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 30 Carat Necklace?

Prices for a 30 carat necklace can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $208 and can go as high as $567,366, while this accessory, on average, fetches $3,525.

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.  

Finding the Right Necklaces for You

We are fortunate to know much of the world’s long and dazzling history of necklaces, as this type of jewelry was so treasured that it was frequently buried with its owners. Today, Van Cleef necklaces, Tiffany necklaces and Cartier necklaces are some of the most popularly searched designer necklaces on 1stDibs.

Lapis lazuli beads adorned necklaces unearthed from the royal graves at the ancient Iraqi civilization of Sumer, while the excavation of King Tut’s burial chamber revealed a sense of style that led to a frenzy of Art Deco designs, with artisans of the 1920s seeking to emulate the elegant work crafted by Ancient Egypt’s goldsmiths and jewelry makers. 

In ancient times, pendant necklaces worn by royalty and nobles conferred wealth and prestige. Today, wearing jewelry is about personal expression: Luxury diamond necklaces exude confidence and can symbolize the celebratory nature of a deep romantic relationship, while paper-clip chain-link necklaces designed by the likes of goldsmith Faye Kim are firmly planted in the past as well as the present. Kim works exclusively with eco-friendly gold, and these fashionable, fun accessories owe to the design of 19th-century watch fobs. 

For some, necklaces are thought of as being a solely feminine piece, but this widely loved accessory has been gender-neutral for eons. In fact, just as women rarely took to wearing a single necklace during the Renaissance, men of the era layered chains and valuable pendants atop their bejeweled clothing. In modern times, the free-spirited hippie and counterculture movements of the 1960s saw costume-jewelry designers celebrating self-expression through colorful multistrand necklaces and no shortage of beads, which were worn by anyone and everyone. 

Even after all of these years, the necklace remains an irrefutable staple of any complete outfit. Although new trends in jewelry are constantly emerging, the glamour and beauty of the past continue to inform modern styles and designs. In a way, the cyclical history of the necklace differs little from its familiar looped form: The celebrated French jewelry house Van Cleef Arpels found much inspiration in King Tut, and, now, their Alhambra collection is a go-to for modern royals. Vintage David Webb necklaces — whose work landed him on the cover of Vogue in 1950, two years after opening his Manhattan shop — were likely inspired by the ornamental styles of ancient Greece, Mesopotamia and Egypt

On 1stDibs, browse top designers like Dior, Chanel and Bulgari, or shop by your favorite style, from eye-catching choker necklaces to understated links to pearl necklaces and more. 

Questions About 30 Carat Necklace
  • 1stDibs ExpertNovember 6, 2023
    There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.
  • 1stDibs ExpertNovember 1, 2023
    How many carats a tennis necklace is depends on the size and number of diamonds that it features. For example, a tennis necklace with 100, 0.1 carat diamonds would have a total weight of 100 carats, while one with 60, 0.2 carat diamonds would be 120 carats in total. Generally, the longer a tennis necklace is and the larger its gemstones are, the higher the total carat weight will be. Shop a range of tennis necklaces on 1stDibs.

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This Victorian Necklace Features a Rainbow of Gems

If jewelry could talk, we know this piece would have good stories.

A Centuries-Old Style, Lockets Have Never Lost Their Romantic Appeal

Emblems of heartfelt emotion, elegant vessels for photos and keepsakes and perfect for layering, these special ornaments are an essential component of any thoughtfully curated jewelry collection.

This Van Cleef & Arpels Necklace Is an Heirloom in the Making

With more than 100 carats of diamonds, this vintage stunner converts into different styles, making it as versatile as it is breathtaking.

[Survey] Two-Thirds of Jewelry Gift Recipients Don’t Want to Be Surprised

Givers of fine gems enjoy surprise more than receivers, and women more than men. Find out what else our survey of 3,000 Americans revealed.

Next-Level Pearls That Go Well Beyond the Expected

Organic shapes, surprising textures, shimmering colors and inventive embellishments take the new generation of pearl jewelry from classic to cutting-edge.

7 Vibrant Jewels for a Breezy Late-Summer Wardrobe

Soak up the pleasures of the season with a these bold gems.

Whether Worn Alone or Layered, These Chain Link Necklaces Are Trending

Learn more about the stylish links that have passed the test of time.

Meet the Dapper, Mustachioed Parisian Who’s Tops in Crafting Enticing Jewels

After more than a decade creating the iconic Lanvin gems of the Alber Elbaz years, designer Elie Top dove into the world of fine jewelry, mixing silver and gold to create his own striking, timeless look.