Skip to main content

18k Otc

Vintage 18k Sterling Citrine French Back Earrings
Vintage 18k Sterling Citrine French Back Earrings

Vintage 18k Sterling Citrine French Back Earrings

Located in Webster, SD

Weight: 19.1 grams Marks: 925, 18K, OTC Condition: Excellent These earrings have been steam cleaned

Category

Late 20th Century Unknown Art Deco Stud Earrings

Materials

Citrine, 18k Gold, Sterling Silver

Italian Woven Bracelet 18 Karat Yellow Gold 47.1 Grams OTC Designer
Italian Woven Bracelet 18 Karat Yellow Gold 47.1 Grams OTC Designer

Italian Woven Bracelet 18 Karat Yellow Gold 47.1 Grams OTC Designer

By Harbor Diamonds

Located in New York, NY

. Stamped Italy 18k Designer OTC More gold bracelets available. Search Harbor Diamonds

Category

Early 2000s Italian Contemporary Link Bracelets

Materials

18k Gold, Yellow Gold

Recent Sales

Modernist 18K Eagle Leather Braided Collar Necklace-Italy-Fierce & Fabulous
Modernist 18K Eagle Leather Braided Collar Necklace-Italy-Fierce & Fabulous

Modernist 18K Eagle Leather Braided Collar Necklace-Italy-Fierce & Fabulous

Located in West Palm Beach, FL

fabulous in like new condition. The Eagle conveys wisdom, longevity, power and fame;. Marks: 'OTC,' '18K

Category

20th Century Modernist Choker Necklaces

Materials

14k Gold, White Gold

Italian OTC 18k Yellow Gold Large Matte Finish Puffed Open Heart Pendant
Italian OTC 18k Yellow Gold Large Matte Finish Puffed Open Heart Pendant

Italian OTC 18k Yellow Gold Large Matte Finish Puffed Open Heart Pendant

Located in Montclair, NJ

) Stamp: 18k Italy - OTC Condition: Shows some light wear. Excellent overall condition! Stock Number: MK

Category

21st Century and Contemporary Italian Pendant Necklaces

Materials

Gold, 18k Gold, Yellow Gold

OTC 1990's Amethyst 18 Karat Yellow Gold Vintage Cable Link Chain
OTC 1990's Amethyst 18 Karat Yellow Gold Vintage Cable Link Chain

OTC 1990's Amethyst 18 Karat Yellow Gold Vintage Cable Link Chain

Located in Philadelphia, PA

measuring 5.0 x 5.0 mm Transparent medium purple Stamped for 18 karat gold With maker's mark for OTC

Category

1990s Link Bracelets

Materials

Amethyst, Gold, 18k Gold, Yellow Gold

Italian Yellow Gold Clip Post Earrings
Italian Yellow Gold Clip Post Earrings

Italian Yellow Gold Clip Post Earrings

Located in Stamford, CT

: 7.81mm or .30 inch Depth: 16mm 7.5 grams Tested: 18k Stamped: 750 Italy Hallmark: OTC

Category

Vintage 1960s Clip-on Earrings

Materials

18k Gold, Yellow Gold

Gold Italian San Marco Bracelet
Gold Italian San Marco Bracelet

Gold Italian San Marco Bracelet

Located in Stamford, CT

OTC Italy 18k yellow shiny and white textured San Marco link bracelet. 18k White Gold 18k

Category

Vintage 1960s More Bracelets

Materials

18k Gold, White Gold, Yellow Gold

Italian Wide Two Color Gold Mesh Bracelet 1960
Italian Wide Two Color Gold Mesh Bracelet 1960

Italian Wide Two Color Gold Mesh Bracelet 1960

Located in Stamford, CT

Beautiful OTC Italian 18k yellow and white gold mesh bracelet with diamond catch. Circa 1960-1970

Category

Vintage 1960s Modern Retro Bracelets

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Italian Diamond Wide Two-Color Gold Mesh Bracelet
Italian Diamond Wide Two-Color Gold Mesh Bracelet

Italian Diamond Wide Two-Color Gold Mesh Bracelet

Located in Stamford, CT

OTC Italian 18k yellow and white gold mesh bracelet with diamond catch. Circa 1960-1970. 15 round

Category

Mid-20th Century Modern Retro Bracelets

Materials

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

18k Yellow Gold Suitcase Charm Pendant
18k Yellow Gold Suitcase Charm Pendant

18k Yellow Gold Suitcase Charm Pendant

Sold

H 0.83 in W 0.35 in L 0.82 in

18k Yellow Gold Suitcase Charm Pendant

Located in New York, NY

This vintage suitcase charm pendant is crafted in solid 18k yellow gold by OTC International, a New

Category

Late 20th Century Charm Bracelets

Materials

18k Gold, Yellow Gold

18kt Yellow Gold Citrine Hinged Bracelet, Italian Made, Designer OTC, 17.2grams
18kt Yellow Gold Citrine Hinged Bracelet, Italian Made, Designer OTC, 17.2grams

18kt Yellow Gold Citrine Hinged Bracelet, Italian Made, Designer OTC, 17.2grams

Located in San Diego, CA

Stylish 18kt yellow gold OTC Designer hinged bracelet made in Italy. The ends of the bracelet have

Category

21st Century and Contemporary Italian Modern Clamper Bracelets

Materials

Citrine, 18k Gold, Yellow Gold

1980s Gold Link Bracelet
1980s Gold Link Bracelet

1980s Gold Link Bracelet

Located in Lambertville, NJ

approximately 6 3/4" wrist. The weight of the piece is 68.3 grams. Marked: 18k Italy OTC.

Category

Vintage 1980s Link Bracelets

Materials

18k Gold

People Also Browsed

Cartier 18K Yellow Gold Double Panthere Ring
Cartier 18K Yellow Gold Double Panthere Ring

Cartier 18K Yellow Gold Double Panthere Ring

By Cartier

Located in New York, NY

The beauty of wild cats is captured in this striking pre-owned Cartier design. Crafted in 18kt yellow gold, this ring is detailed with black enamel and boasts a double panther motif....

Category

20th Century French Modern Cocktail Rings

Materials

Emerald, 18k Gold, Yellow Gold

Turquoise Pendant 18k
Turquoise Pendant 18k

Turquoise Pendant 18k

$1,250

Dm 0.7 in

Turquoise Pendant 18k

Located in Litchfield, CT

Circa 1960s, 18k, American. Perfect for layering or brilliant on its own, this bright blue 17.60mm turquoise bauble set with 18k yellow gold is fun, fashionable, mystical … Beautif...

Category

Vintage 1960s American Pendant Necklaces

Materials

Turquoise, 18k Gold, Yellow Gold

Cartier Agrafe Diamond Necklace in 18k White Gold
Cartier Agrafe Diamond Necklace in 18k White Gold

Cartier Agrafe Diamond Necklace in 18k White Gold

By Cartier

Located in Philadelphia, PA

Cartier diamond link necklace in 18k white gold from the Agrafe collection, accompanied by Cartier certificate of authenticity. This necklace features 18k white gold brickwork link...

Category

Early 2000s Link Necklaces

Materials

Diamond, 18k Gold, White Gold

18 Karat Yellow Gold Swirl Brushed & High Polished Link Bracelet 36.2 Grams
18 Karat Yellow Gold Swirl Brushed & High Polished Link Bracelet 36.2 Grams

18 Karat Yellow Gold Swirl Brushed & High Polished Link Bracelet 36.2 Grams

By Harbor Diamonds

Located in New York, NY

18 Karat yellow gold link bracelet featuring a interlocking swirl link in a brushed & high polished finish, 36.2 grams. A unique twist to link bracelets.

Category

Early 2000s Contemporary Link Bracelets

Materials

18k Gold, Yellow Gold

18K Solid Gold Diamond Blue Bird Brooch
18K Solid Gold Diamond Blue Bird Brooch

18K Solid Gold Diamond Blue Bird Brooch

Located in Scottsdale, AZ

Celebrate mid-century vintage elegance with the 18K Solid Gold Diamond Blue Bird Brooch – a truly one-of-a-kind masterpiece. Crafted from solid yellow gold, this brooch features a ma...

Category

Vintage 1960s Lebanese Brooches

Materials

Diamond, Gold

Exceptional Art Deco Mazer Pendant Brooch
Exceptional Art Deco Mazer Pendant Brooch

Exceptional Art Deco Mazer Pendant Brooch

By Mazer

Located in New York, NY

Exceptional Art Deco Mazer Pendant Brooch from the 1930's. High Art Deco design with step faceted faux aquamarines and sapphires set within an intricate pave and baguette dangle sett...

Category

Vintage 1930s American Art Deco Brooches

Materials

Rhodium

Antora Tubogas 18k Rose Gold and Pavée Diamonds Ring
Antora Tubogas 18k Rose Gold and Pavée Diamonds Ring

Antora Tubogas 18k Rose Gold and Pavée Diamonds Ring

By Antora

Located in Neguri, Vizcaya

Flexible and adaptable ring with tubogas craftmanship that fits medium to large sizes. Available in three colours of gold, yellow, white and rose. This listing is applicable to the ...

Category

21st Century and Contemporary Italian Contemporary More Jewelry

Materials

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

Vintage Iconic CARTIER Art Deco Turquoise and Diamond Platinum Drop Earrings
Vintage Iconic CARTIER Art Deco Turquoise and Diamond Platinum Drop Earrings

Vintage Iconic CARTIER Art Deco Turquoise and Diamond Platinum Drop Earrings

By Cartier

Located in Montreal, QC

Simply Beautiful! Stylish and Finely detailed Vintage Art Deco CARTIER Turquoise Briolette and OEC Diamond Drop Platinum Earrings. Hand set with Turquoise Briolette Gemstones and Old...

Category

Late 20th Century Art Deco Drop Earrings

Materials

Diamond, Turquoise, Platinum

TIFFANY & Co. Jazz Platinum Diamond Double Drop Pendant Necklace
TIFFANY & Co. Jazz Platinum Diamond Double Drop Pendant Necklace

TIFFANY & Co. Jazz Platinum Diamond Double Drop Pendant Necklace

By Tiffany & Co.

Located in Los Angeles, CA

TIFFANY & Co. Jazz Platinum Diamond Double Drop Pendant Necklace Metal: Platinum Chain: 16" long Weight: 5.10 grams Pendant: 23mm long Diamond: 14 round brilliant diamonds, cara...

Category

2010s American Pendant Necklaces

Materials

Diamond, Platinum

Very Fine Deep Blue Natural Star Sapphire, 11.74 cts. and fine Diamond Ring
Very Fine Deep Blue Natural Star Sapphire, 11.74 cts. and fine Diamond Ring

Very Fine Deep Blue Natural Star Sapphire, 11.74 cts. and fine Diamond Ring

Located in Aspen, CO

Very fine large natural star sapphire weighing exactly 11.74 cts. This oval stone, held by four long well shaped prongs, has a medium deep blue color. The distinct star is created na...

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Sapphire, Star Sapphire, Diamond, Platinum

Turquoise Diamonds 18 Karat Yellow Gold Beaded Necklace
Turquoise Diamonds 18 Karat Yellow Gold Beaded Necklace

Turquoise Diamonds 18 Karat Yellow Gold Beaded Necklace

By SCALA GIOIELLI

Located in Marcianise, IT

This magnificent necklace is crafted in 18-karat yellow gold and features an extraordinary combination of natural turquoise from Arizona, diamonds, and blue enamel. Each turquoise be...

Category

21st Century and Contemporary Italian Beaded Necklaces

Materials

Diamond, Turquoise, 18k Gold, Yellow Gold

Cartier Panthere Onyx Diamond Yellow Gold Vintage Hoop Earrings
Cartier Panthere Onyx Diamond Yellow Gold Vintage Hoop Earrings

Cartier Panthere Onyx Diamond Yellow Gold Vintage Hoop Earrings

By Cartier

Located in Feasterville, PA

These exquisite Cartier Panthère Onyx Diamond Yellow Gold Vintage Hoop Earrings are a testament to the iconic elegance and craftsmanship synonymous with the Cartier brand. Crafted fr...

Category

1990s Hoop Earrings

Materials

Diamond, Onyx, Yellow Gold

Cartier Pasha Amethyst Citrine Garnet Tourmaline Yellow Gold Ring
Cartier Pasha Amethyst Citrine Garnet Tourmaline Yellow Gold Ring

Cartier Pasha Amethyst Citrine Garnet Tourmaline Yellow Gold Ring

By Cartier

Located in Southampton, PA

18k Yellow Gold Amethyst Citrine Garnet Tourmaline Large Pasha Ring by Cartier. With 2 amethysts, 2 garnets, 2 citrine stones, 2 yellow tourmalines, 1 pink tourmaline. Details: Siz...

Category

Early 2000s French Cocktail Rings

Materials

Amethyst, Citrine, Garnet, Tourmaline, Yellow Gold

BVLGARI Turquoise Cabochon and Diamond Earrings, 18k
BVLGARI Turquoise Cabochon and Diamond Earrings, 18k

BVLGARI Turquoise Cabochon and Diamond Earrings, 18k

By Bulgari

Located in New York, NY

A pair of BVLGARI Turquoise Cabochon and Diamond Earrings made in 18k Yellow Gold. The earrings measure 2.5 x 1.5 CM. Clip-ons. The total weight of the earrings is 20 grams. Marks: 7...

Category

20th Century Clip-on Earrings

Materials

Diamond, Turquoise, 18k Gold

Van Cleef & Arpels Sapphire Cabochon and Diamond Ring, 18k
Van Cleef & Arpels Sapphire Cabochon and Diamond Ring, 18k

Van Cleef & Arpels Sapphire Cabochon and Diamond Ring, 18k

By Van Cleef & Arpels

Located in New York, NY

A Van Cleef & Arpels Sapphire Cabochon and Diamond Ring made in 18k yellow gold. The sapphire cabochon measures 10.5 mm x 7.5 mm. The total diamonds weight is 2.2 carats, F, VS...

Category

20th Century Dome Rings

Materials

Diamond, Sapphire, 18k Gold

Cartier Necklace with Diamonds 18 Karat Yellow Gold
Cartier Necklace with Diamonds 18 Karat Yellow Gold

Cartier Necklace with Diamonds 18 Karat Yellow Gold

By Cartier

Located in Lucerne, CH

This exquisite Cartier necklace is crafted in 18K yellow gold and adorned with 103 brilliant-cut diamonds totaling 2.06 carats. The diamonds are F-G color with vvs clarity, ensuring ...

Category

21st Century and Contemporary French Modern Chain Necklaces

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Get Updated with New Arrivals
Save "18k Otc", and we’ll notify you when there are new listings in this category.

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.