What does 18K on a ring mean?

The mark 18K on a ring stands for 18-karat gold. 18-karat signifies that the ring is 75% pure gold and 25% other metals, such as copper, zinc or nickel. The additional metals strengthen the ring, making it more durable. Shop a range of expertly vetted 18-karat jewelry on 1stDibs.

What is 18K green gold?

18K green gold is an alloy created by mixing silver, copper and zinc with normal gold. 18K green gold is greener than 14K green gold. On 1stDibs, shop a wide collection of genuine 18K green gold from some of the world's top sellers.

Yes, 18k is the perfect karatage for jewelry. While 24k is more prized and typically more expensive, it is also less dense and durable than 18k gold.

Yes, 18K gold is real gold. However, it is not pure gold. Something marked 18K is 75 percent genuine gold and 25 percent metal alloy. On 1stDibs, shop a range of expertly vetted gold jewelry from some of the world’s top sellers.

Does 18K gold wear off?

Whether or not 18K gold wears off depends on how it's made. The finish will not wear off of a piece of jewelry or another object made entirely out of 18K gold. However, wear can occur on pieces that feature 18K gold plating, a thin layer of gold applied over another type of metal. You'll find a large selection of gold jewelry and decorative objects on 1stDibs.

What is 18K Italy gold?

18K Italy gold is 18-karat gold produced in Italy. Karats tell you how much of a piece of metal is genuine gold. In the case of 18-karat gold, 18 parts are pure gold, and six parts are other metals. This makes 18-karat pieces 75 percent gold. You'll find a large collection of gold jewelry on 1stDibs.

What is 18k gold watch?

An 18K gold watch is a timepiece made from gold precious metal of a specific purity. The term 18K means 18-karat, a precious metal that is 75 percent pure gold and 25 percent alloy. Shop a large collection of gold watches on 1stDibs.

What is the difference between 24K gold and 18K gold?

The difference between 24K gold and 18K gold is how much pure gold the metals contain. Something made of 24-karat gold is 99.9% pure gold, while 18-karat gold items are 75% gold and 25% alloy metals. Generally, 18-karat gold is more durable and scratch-resistant due to the presence of alloy metals. On the other hand, 24-karat gold tends to be more richly colored and expensive. On 1stDibs, find a wide range of gold jewelry.

Is 18K gold dipped real gold?

Yes, gold dipped, also known as gold plated, pieces are considered real gold. The process coats a piece of metal or alloy with a layer of gold for a gold finish. Shop a collection of 18 karat gold jewelry, solid and dipped, on 1stDibs.

Is 18K 750 real gold?

Yes, 18K 750 is real gold. Gold pieces that bear this hallmark are 18-karat gold, a 75% pure gold alloy and 25% base metal. One of the most popular materials for fine jewelry, 18-karat gold shows off a rich yellow, white or rose color and resists scratching more readily than pure gold. Explore a wide variety of 18-karat gold jewelry on 1stDibs.

Is 18K gold good for earrings?

Yes, 18-karat gold can be good for earrings. Because it is an alloy, 18-karat gold is more durable and scratch-resistant than pure 24-karat gold. You can find 18-karat gold in rich warm yellow, cooler white with warm undertones and light pink rose. On 1stDibs, explore a large collection of gold earrings.

Does 18k yellow gold tarnish?

Yes, 18k gold can tarnish, but it is uncommon. Pure gold does not combine easily with oxygen and therefore does not tarnish. The higher the karat, the less likely a piece of gold will tarnish.

Does 18K gold go green?

Yes, 18-karat gold can turn green in some circumstances. This type of gold is about 75 percent genuine gold and 25 percent alloy, and the other metal or metals used to produce it may react negatively to acidic substances. When this occurs, 18-karat gold may take on a greenish hue. On 1stDibs, shop a large selection of gold jewelry.

Is 18k gold worth buying?

Yes, many people believe that 18k gold is worth buying. Due to the metal's durability, jewelry produced from 18-karat gold is often resistant to scratching and damage. In addition, the large amount of pure gold in the alloy gives white, rose and yellow 18-karat gold a vibrant color. However, whether or not it’s worth investing in 18-karat gold is totally subjective! At 1stDibs, we believe in buying what you love. Our shopping experience enables discovery and learning, whether you are a seasoned connoisseur or just beginning your collection. Find a diverse range of gold jewelry on 1stDibs.

What does 18K gold mean on a watch?

On a watch, 18K gold means that the watch features genuine gold. An alloy, 18-karat gold is 75% pure gold and 25% other metals. The high gold content gives the metal an attractive color, while the alloy metals add strength to increase its durability. An 18-karat gold watch may be solid gold or gold-filled, which means it is primarily another metal that the watchmaker finished with a thin layer of 18-karat gold. On 1stDibs, find a large selection of gold watches.

Is 18K gold good for watches?

Many watch lovers believe that 18K gold is good for watches. An alloy, 18-karat gold is 75% pure gold and 25% other metals. The amount of gold makes the color of the alloy, whether it's white, yellow or rose, rich and visually appealing. At the same time, the addition of alloy metals increases the strength of the gold material. Explore a large selection of watches on 1stDibs.

What is the difference between 14k and 18k rose gold?

The difference between 14k and 18k rose gold metal is that the 14k rose gold is less pure than 18k. 14k rose gold has a deeper pink color because of greater amounts of copper, whereas 18k rose gold has 75% gold and appears yellow. 14k rose gold is increasingly popular due to its brighter pink hue and resistance to scratches. On 1stDibs, shop a range of vintage rose gold jewelry.

Is a 24K gold ring worth it?

Whether a 24K gold ring is worth it depends on your preferences and personal opinions. Because 24-karat gold is pure gold with no alloy metals added, it shows off a rich color that many people find appealing. However, 24-karat gold is more expensive than other alloys and is more prone to scratching and wear than alloys like 18-karat and 14-karat gold. As a result, you may prefer an alloy if you're looking for a piece of jewelry to wear daily. On 1stDibs, shop a wide variety of gold jewelry.

Is 18k gold plated real or fake?

A piece of jewelry or a decorative object marked 18K gold plated does likely contain real gold. The marking indicates that the item is metal under a layer of gold alloy that contains 75 percent gold and 25 percent other metal. On 1stDibs, shop a collection of expertly vetted gold jewelry.

How much is my 18K gold chain worth?

How much your 18K gold chain is worth depends on several factors. As a material, 18-karat gold typically fetches a higher price than 14-karat and 10-karat gold on the scrap market because it contains more pure gold. When selling a piece for scrap, the length, thickness and weight of your chain will determine how much you can expect to receive for it. It's also possible that your chain may be worth more than the going scrap rate due to its style, maker, age and other characteristics. Consequently, you may wish to have a certified appraiser or knowledgeable jeweler evaluate your jewelry before you sell it. On 1stDibs, shop a wide range of gold chains.

18K Gold Onyx Rings

Art Deco Black Onyx And Diamond Ring

X And O Bracelet Gold

Black Opal And Onyx Jewellery

Solid Gold Signet Ring

Mens Gold Ring Settings Without Stones

Cartier Panthere Yellow Gold Ring

Materials

Diamond, Onyx, 18k Gold, Rose Gold

$3,600

Cartier Diamond Black Onyx 18k Yellow Gold Stack Band Ring Size 5 EU 49

By Cartier

Located in Boca Raton, FL

Brand: Cartier Style: Black Onyx & Diamond Band Ring Material: 18k yellow gold Hallmarks: Cartier 750 49 128363 Gemstones: Black onyx and diamonds Diamonds: Approximately 0.06 carats...

Category

Late 20th Century French Modern Band Rings

Materials

Diamond, Onyx, 18k Gold, Yellow Gold

Bvlgari Rose Gold Onyx & Diamond Serpenti Viper Ring 345220

$10,408

Bvlgari Rose Gold Onyx & Diamond Serpenti Viper Ring 345220

By Bulgari

Located in Mayfair, London, London

An 18k rose gold Bvlgari onyx and diamond ring from the Serpenti collection. The ring is in the form of a serpent wrapping around the finger with an onyx head and featuring alternati...

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Onyx, 18k Gold, Rose Gold

$2,365

Vintage 18k Yellow Gold Oval Cabochon Deep Green Onyx w/ Diamond Platter Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Green Onyx - Oval Cabochon Cut - Bezel Set - Deep Vivid Green - 9.7x7.7mm (approx.) (16) Natural Genuine Diamonds - Single Cut - Pave Set - Nice Br...

Category

20th Century Cocktail Rings

Materials

Diamond, Onyx, Gold, 18k Gold, Yellow Gold

Jean Pierre Bellin 18K Gold Diamond Onyx Horse Head Ring

$3,000

Jean Pierre Bellin 18K Gold Diamond Onyx Horse Head Ring

Located in 台東区, JP

A distinctive 18K yellow gold horse head ring by Jean Pierre Bellin, combining sculptural design with refined equestrian inspiration. The ring is beautifully modeled as a horse’s he...

Category

Late 20th Century French Fashion Rings

Materials

Diamond, Onyx, 18k Gold

Cartier 1970s Sterling Gold and Onyx Heart Ring

$2,150

$4,950

Bvlgari Onyx Spinning Optical 18k White Gold Steel Ring with Box Size 6.5

By Bulgari

Located in Boca Raton, FL

Brand: Bvlgari Material: 18k white gold, stainless steel, and black onyx inlay Design: Spinning optical ring featuring a rotating circular top with sleek black onyx inlay Top Meas...

Category

Late 20th Century Italian Modern Cluster Rings

Materials

Onyx, 18k Gold, White Gold, Steel

Bvlgari Onyx Spinning Optical 18k White Gold Steel Ring with Box Size 5.5

$4,950

Bvlgari Onyx Spinning Optical 18k White Gold Steel Ring with Box Size 5.5

By Bulgari

Located in Boca Raton, FL

Brand: Bvlgari Collection/Style: Onyx Spinning Optical Ring Material: 18k white gold, stainless steel, and black onyx Hallmarks: Bvlgari Gold & Steel 750, Made in Italy Gemstones...

Category

Late 20th Century Italian Modern Cluster Rings

Materials

Onyx, 18k Gold, White Gold, Steel

Vintage 1998 Cartier Tank Onyx Ring LM, Size 62

$7,097

Vintage 1998 Cartier Tank Onyx Ring LM, Size 62

By Cartier

Located in London, England

A beautiful vintage Cartier Tank onyx ring large model set in 18k white gold, circa 1998.

From the discontinued collection, this ring solely features a squa...

Category

1990s French Modern Signet Rings

Materials

Onyx, 18k Gold, White Gold

$3,395

Falcher Fusager Magick 18K Gold Diamond Enamel Onyx Statement Ring

Located in Towson, MD

This 18 karat yellow gold Magick ring by Falcher Fusager pairs sculptural onyx framing with a jewel toned cloisonné enamel design, centering a stylized plume motif rendered in pinkis...

Category

21st Century and Contemporary American Art Nouveau Cocktail Rings

Materials

Diamond, Onyx, 18k Gold, Yellow Gold, Enamel

Cartier Panthère Ring in 18K White Gold with Diamonds, Emeralds & Onyx

$26,600

$5,630

18K Yellow Gold Cocktail Ring with Onyx 0.29 Carat Round Diamonds Size 6.75

Located in New York, NY

Detailed Description: 18K Yellow Gold Cocktail Ring with 0.29 Carat Diamond, Size 6.75 DESCRIPTION: Elevate your style with this vintage cocktail ring crafted in 18K yellow gold. The...

Category

20th Century Cocktail Rings

Materials

Diamond, Onyx, 18k Gold, Yellow Gold, Enamel

Cartier 18K White Gold Lakarda Wrap Panthere Ring

$17,200

Cartier 18K White Gold Lakarda Wrap Panthere Ring

By Cartier

Located in New York, NY

A stunning Cartier 18k white gold Lakarda Panthere ring from the Panthere de Cartier collection. The wrap around style ring comprises of a panther motif with emerald eyes, an onyx no...

Category

20th Century French Modern Cocktail Rings

Materials

Emerald, Onyx, 18k Gold, White Gold

Vintage Van Cleef & Arpels Pure Alhambra Onyx Ring in Yellow Gold

$6,285

Vintage Van Cleef & Arpels Pure Alhambra Onyx Ring in Yellow Gold

By Van Cleef & Arpels

Located in London, England

A beautiful vintage Van Cleef & Arpels Alhambra onyx ring set in 18k yellow gold.

The ring is composed of a clover motif set with black onyx, framed by polised edge. Due...

Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Onyx, 18k Gold, Yellow Gold

Chanel Camelia Ring. Genuine CHANEL 18k 750 Camelia Onyx Chalcedony Ring.

$4,290

Chanel Camelia Ring. Genuine CHANEL 18k 750 Camelia Onyx Chalcedony Ring.

By Chanel

Located in Port Charlotte, FL

Genuine Chanel Ring Black and White Camelia Collection Details: Onyx and White Chalcedony carved twin flowers Diamond Paved leaves. 5.75 ring size 51 6.8grams total Please ask ...

Category

Vintage 1980s Modern Band Rings

Materials

Onyx, 18k Gold, White Gold

Van Cleef & Arpels Diamond Onyx Checkerboard Ring, Circa 1975

$31,500

Van Cleef & Arpels Diamond Onyx Checkerboard Ring, Circa 1975

By Van Cleef & Arpels

Located in New York, NY

A gold, diamond, and onyx ring designed in a checkered motif, in 18k and platinum. Van Cleef & Arpels, Paris. #C5107XS Signed Van Cleef & Arpels, Paris, numbered #C5107XS, t...

Category

Vintage 1970s Engagement Rings

Materials

Unavailable

Allure Diamond Ring

By Eraya Diamonds

Located in Austin, TX

Pair this beautiful ring with matching necklace and Earrings to elevate your style. Black Diamond ring is not included.

Category

2010s Indian Contemporary Cocktail Rings

Materials

Diamond, Onyx, 18k Gold, White Gold

Andreoli Diamond Pink Sapphire Onyx 18 Karat Yellow Gold Turtle Ring

Unavailable

Andreoli Diamond Pink Sapphire Onyx 18 Karat Yellow Gold Turtle Ring

By Andreoli

Located in New York, NY

Andreoli Diamond Pink Sapphire Onyx 18 Karat Yellow Gold Turtle Ring This ring features: - 0.23 Carat Diamond - 0.02 Carat Pink Sapphire - Onyx - 20.80 Gram 18K Yellow Gold - Made I...

Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

Diamond, Onyx, Pink Sapphire, Gold, 18k Gold, Yellow Gold

Victorian 18ct Yellow Gold Onyx Cameo Ring, 1881

Unavailable

Victorian 18ct Yellow Gold Onyx Cameo Ring, 1881

Located in Glasgow, GB

A Victorian oval onyx cameo ring set in 18ct yellow gold. The cameo, depicting the philosopher John Locke (1632-1704) is set in 18ct gold marked with Birmingham hallmarks, 1881. • P...

Category

Antique 1880s British Classical Roman Signet Rings

Materials

Onyx, 18k Gold, Yellow Gold

Veschetti 18 Kt Yellow Gold, Onyx and Diamonds Ring

Unavailable

Unavailable

Unavailable

Andreoli Onyx Diamond 18 Karat Yellow Gold Clover Ring

By Andreoli

Located in New York, NY

Andreoli Onyx Diamond 18 Karat Yellow Gold Clover Ring This ring features: - 1.10 Carat Diamond - 1.00 Gram Onyx - 14.95 Gram 18K Yellow Gold - Made In Italy

Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

Diamond, Onyx, Gold, 18k Gold, Yellow Gold

Andreoli Onyx Diamond 18 Karat White Gold Clover Ring

Unavailable

Unavailable

Vintage 18kt Yellow Gold Onyx and Diamond Ring

Located in Saint Louis, MO

In David Webb style, this gorgeous 18k yellow gold ring features a beautiful oval cabochon-cut black onyx accented by round brilliant-cut diamonds weighing approximately 0.48 carats...

Category

Vintage 1960s American Cocktail Rings

Materials

Diamond, Onyx, 18k Gold, Yellow Gold

Goshwara Onyx Cushion Cabochon Ring

Unavailable

Goshwara Onyx Cushion Cabochon Ring

By Goshwara

Located in New York, NY

Onyx Cushion Cabochon Ring in 18K Yellow Gold, from "Rock 'N Roll" Collection. This is an extensive collection of big and bold pieces. Like the music, this Rock ‘n Roll collection is...

Category

21st Century and Contemporary Indian Contemporary Cocktail Rings

Materials

Onyx, 18k Gold, Yellow Gold

Unavailable

Cally Self Love Cocktail Ring

Located in JAMAICA, NY

The Cally Self-Love cocktail ring is the perfect gift for the girl who loves lilies. Inspired by the Calla Lily flower, set with a stunning heart-shaped green topaz gemstone, this r...

Category

21st Century and Contemporary Cocktail Rings

Materials

Onyx, 18k Gold, Sterling Silver

18k Yellow Gold Coral Ring with Onyx and Diamonds Band Cocktail

Unavailable

Unavailable

Unavailable

Spine Ring in Gold with Five Diamond Baguettes

By Alexandra Koumba

Located in Astoria, NY

The Spine rings in gold with five white diamond baguettes are offered in 14k gold or 18k gold and are one size-adjusted as they are open on top. Price quoted here is in 14k gold with...

Category

2010s Greek Band Rings

Materials

Onyx, Ruby, Diamond, 14k Gold, 18k Gold, Gold

Spine Ring Set in Gold with Diamond Baguettes

Unavailable

Spine Ring Set in Gold with Diamond Baguettes

By Alexandra Koumba

Located in Astoria, NY

The Spine rings as a set in gold with five white diamond baguettes each offered in 14k gold or 18k gold and they are one size-adjusted as they are open on top. Price quoted in 14k go...

Category

2010s Greek Band Rings

Materials

Diamond, Onyx, Ruby, 14k Gold, 18k Gold, Gold, Rose Gold

$31,750

Panthère de Cartier Diamond Ring – Iconic Maison Creation

By Cartier

Located in Ramat Gan, IL

A celebrated symbol of the House of Cartier, this Panthère de Cartier ring captures the spirit of strength, elegance, and sensuality that has defined the maison for over a century. I...

Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, 18k Gold

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18K Gold Onyx Rings For Sale on 1stDibs

Browse a vast assortment of 18k gold onyx rings for sale on 1stDibs. Our collection of these items for sale includes 772 vintage editions and 551 modern creations to choose from as well. Our collection is diverse and broad-ranging, and pieces in stock date back to the 18th Century while others were produced as recently as the 21st Century. The designs in our inventory of 18k gold onyx rings bearing Contemporary or Modern hallmarks are very popular. Many examples in our inventory of these items are appealing no matter their origins, but Cartier, Van Cleef & Arpels and Bulgari produced popular versions that are worth a look. Today, if you’re looking for round cut 18k gold onyx rings and are unable to find the perfect match, our selection also includes brilliant cut and cabochon alternatives. If you’re browsing the variety of 18k gold onyx rings for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are 18K Gold Onyx Rings?

Prices for 18k gold onyx rings can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $382 and can go as high as $135,106, while 18k gold onyx rings, on average, fetch $4,203.

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 rings, vintage 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 Rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. On 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings.

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry.

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About 18K Gold Onyx Rings

What does 18K on a ring mean?
1 Answer
1stDibs ExpertApril 5, 2022
The mark 18K on a ring stands for 18-karat gold. 18-karat signifies that the ring is 75% pure gold and 25% other metals, such as copper, zinc or nickel. The additional metals strengthen the ring, making it more durable. Shop a range of expertly vetted 18-karat jewelry on 1stDibs.
What is 18K green gold?
1 Answer
1stDibs ExpertApril 5, 2022
18K green gold is an alloy created by mixing silver, copper and zinc with normal gold. 18K green gold is greener than 14K green gold. On 1stDibs, shop a wide collection of genuine 18K green gold from some of the world's top sellers.
Is 18k gold good?
1 Answer
1stDibs ExpertFebruary 22, 2021
Yes, 18k is the perfect karatage for jewelry. While 24k is more prized and typically more expensive, it is also less dense and durable than 18k gold.
Is 18K real gold?
1 Answer
1stDibs ExpertApril 5, 2022
Yes, 18K gold is real gold. However, it is not pure gold. Something marked 18K is 75 percent genuine gold and 25 percent metal alloy. On 1stDibs, shop a range of expertly vetted gold jewelry from some of the world’s top sellers.
Does 18K gold wear off?
1 Answer
1stDibs ExpertApril 5, 2022
Whether or not 18K gold wears off depends on how it's made. The finish will not wear off of a piece of jewelry or another object made entirely out of 18K gold. However, wear can occur on pieces that feature 18K gold plating, a thin layer of gold applied over another type of metal. You'll find a large selection of gold jewelry and decorative objects on 1stDibs.
What is 18K Italy gold?
1 Answer
1stDibs ExpertMarch 22, 2022
18K Italy gold is 18-karat gold produced in Italy. Karats tell you how much of a piece of metal is genuine gold. In the case of 18-karat gold, 18 parts are pure gold, and six parts are other metals. This makes 18-karat pieces 75 percent gold. You'll find a large collection of gold jewelry on 1stDibs.
What is 18k gold watch?
1 Answer
1stDibs ExpertApril 5, 2022
An 18K gold watch is a timepiece made from gold precious metal of a specific purity. The term 18K means 18-karat, a precious metal that is 75 percent pure gold and 25 percent alloy. Shop a large collection of gold watches on 1stDibs.
What is the difference between 24K gold and 18K gold?
1 Answer
1stDibs ExpertAugust 26, 2024
The difference between 24K gold and 18K gold is how much pure gold the metals contain. Something made of 24-karat gold is 99.9% pure gold, while 18-karat gold items are 75% gold and 25% alloy metals. Generally, 18-karat gold is more durable and scratch-resistant due to the presence of alloy metals. On the other hand, 24-karat gold tends to be more richly colored and expensive. On 1stDibs, find a wide range of gold jewelry.
Is 18K gold dipped real gold?
1 Answer
1stDibs ExpertApril 5, 2022
Yes, gold dipped, also known as gold plated, pieces are considered real gold. The process coats a piece of metal or alloy with a layer of gold for a gold finish. Shop a collection of 18 karat gold jewelry, solid and dipped, on 1stDibs.
Is 18K 750 real gold?
1 Answer
1stDibs ExpertAugust 29, 2024
Yes, 18K 750 is real gold. Gold pieces that bear this hallmark are 18-karat gold, a 75% pure gold alloy and 25% base metal. One of the most popular materials for fine jewelry, 18-karat gold shows off a rich yellow, white or rose color and resists scratching more readily than pure gold. Explore a wide variety of 18-karat gold jewelry on 1stDibs.
Is 18K gold good for earrings?
1 Answer
1stDibs ExpertNovember 14, 2023
Yes, 18-karat gold can be good for earrings. Because it is an alloy, 18-karat gold is more durable and scratch-resistant than pure 24-karat gold. You can find 18-karat gold in rich warm yellow, cooler white with warm undertones and light pink rose. On 1stDibs, explore a large collection of gold earrings.
Does 18k yellow gold tarnish?
1 Answer
1stDibs ExpertFebruary 22, 2021
Yes, 18k gold can tarnish, but it is uncommon. Pure gold does not combine easily with oxygen and therefore does not tarnish. The higher the karat, the less likely a piece of gold will tarnish.
Does 18K gold go green?
1 Answer
1stDibs ExpertMarch 22, 2022
Yes, 18-karat gold can turn green in some circumstances. This type of gold is about 75 percent genuine gold and 25 percent alloy, and the other metal or metals used to produce it may react negatively to acidic substances. When this occurs, 18-karat gold may take on a greenish hue. On 1stDibs, shop a large selection of gold jewelry.
Is 18k gold worth buying?
1 Answer
1stDibs ExpertSeptember 16, 2024
Yes, many people believe that 18k gold is worth buying. Due to the metal's durability, jewelry produced from 18-karat gold is often resistant to scratching and damage. In addition, the large amount of pure gold in the alloy gives white, rose and yellow 18-karat gold a vibrant color. However, whether or not it’s worth investing in 18-karat gold is totally subjective! At 1stDibs, we believe in buying what you love. Our shopping experience enables discovery and learning, whether you are a seasoned connoisseur or just beginning your collection. Find a diverse range of gold jewelry on 1stDibs.
What does 18K gold mean on a watch?
1 Answer
1stDibs ExpertNovember 26, 2024
On a watch, 18K gold means that the watch features genuine gold. An alloy, 18-karat gold is 75% pure gold and 25% other metals. The high gold content gives the metal an attractive color, while the alloy metals add strength to increase its durability. An 18-karat gold watch may be solid gold or gold-filled, which means it is primarily another metal that the watchmaker finished with a thin layer of 18-karat gold. On 1stDibs, find a large selection of gold watches.
Is 18K gold good for watches?
1 Answer
1stDibs ExpertDecember 5, 2024
Many watch lovers believe that 18K gold is good for watches. An alloy, 18-karat gold is 75% pure gold and 25% other metals. The amount of gold makes the color of the alloy, whether it's white, yellow or rose, rich and visually appealing. At the same time, the addition of alloy metals increases the strength of the gold material. Explore a large selection of watches on 1stDibs.
What is the difference between 14k and 18k rose gold?
1 Answer
1stDibs ExpertOctober 12, 2021
The difference between 14k and 18k rose gold metal is that the 14k rose gold is less pure than 18k. 14k rose gold has a deeper pink color because of greater amounts of copper, whereas 18k rose gold has 75% gold and appears yellow. 14k rose gold is increasingly popular due to its brighter pink hue and resistance to scratches. On 1stDibs, shop a range of vintage rose gold jewelry.
Is a 24K gold ring worth it?
1 Answer
1stDibs ExpertAugust 20, 2024
Whether a 24K gold ring is worth it depends on your preferences and personal opinions. Because 24-karat gold is pure gold with no alloy metals added, it shows off a rich color that many people find appealing. However, 24-karat gold is more expensive than other alloys and is more prone to scratching and wear than alloys like 18-karat and 14-karat gold. As a result, you may prefer an alloy if you're looking for a piece of jewelry to wear daily. On 1stDibs, shop a wide variety of gold jewelry.
Is 18k gold plated real or fake?
1 Answer
1stDibs ExpertApril 5, 2022
A piece of jewelry or a decorative object marked 18K gold plated does likely contain real gold. The marking indicates that the item is metal under a layer of gold alloy that contains 75 percent gold and 25 percent other metal. On 1stDibs, shop a collection of expertly vetted gold jewelry.
How much is my 18K gold chain worth?
1 Answer
1stDibs ExpertOctober 30, 2024
How much your 18K gold chain is worth depends on several factors. As a material, 18-karat gold typically fetches a higher price than 14-karat and 10-karat gold on the scrap market because it contains more pure gold. When selling a piece for scrap, the length, thickness and weight of your chain will determine how much you can expect to receive for it. It's also possible that your chain may be worth more than the going scrap rate due to its style, maker, age and other characteristics. Consequently, you may wish to have a certified appraiser or knowledgeable jeweler evaluate your jewelry before you sell it. On 1stDibs, shop a wide range of gold chains.