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18k Gold Square Signet

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18K Yellow Gold Created Ruby & Brilliant Diamond Signet Square Ring Size 12.5
Located in San Jacinto, CA
18K Yellow Gold 5.73TCW Created Ruby & Brilliant Diamond Ring Size- 12.5 This distinguished signet
Category

21st Century and Contemporary American Modern Signet Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Yellow Gold 18k Signet Ring with Intaglio
Located in Geneva, CH
Yellow gold 18K signet ring adorned with an intaglio on nicolo agate representing a coat of arms
Category

Early 20th Century European Classical Roman Signet Rings

Materials

Agate, Yellow Gold

Vintage Multi Colored Sapphire and Diamond Square Signet Ring 18k Yellow Gold
Located in beverly hills, CA
A beautiful unique 18K Yellow & White Gold Diamond Multi Color Sapphire Ring featuring Three
Category

Late 20th Century Contemporary Signet Rings

Materials

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

1963 Signet Men Ring Onyx solid 18K Gold Signet Ring Ø 9.75US / 3.75 gr
Located in SE
hallmarks , 18k, maker's and date code is S8 / made in 1944. Crown is 18 mm x 15 mm x 4mm, with engraved
Category

Vintage 1960s Swedish Retro Signet Rings

Materials

Onyx, 18k Gold

Antique Intaglio von Gyllensvärd Signet Ring Blue Sardonyx 18K Gold ØUS8.75/3.5g
Located in SE
. Not hallmarked, the metal tested solid 18K Gold. Size: Ø 8.75 US / 18.69 mm. Most likely it used to
Category

Vintage 1920s Swedish Medieval Signet Rings

Materials

Carnelian, 18k Gold

1944 Nordic Men Signet Ring Hematite solid 18K Gold Ø 8.75 US / 6.7 gr
Located in SE
hallmarks , 18k, maker's and date code is S8 / made in 1944. Crown is 18 mm x 15 mm x 4mm, with engraved
Category

Vintage 1940s Swedish Art Deco Signet Rings

Materials

Hematite, 18k Gold

1950s Lapis Lazuli 18 Karat Yellow Gold Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle head hallmark. A lovely signet ring, it is set with a
Category

Vintage 1950s French Retro Signet Rings

Materials

Lapis Lazuli, Gold, 18k Gold, Yellow Gold

Vintage 1973 Yellow Gold Signet Ring
Located in Jesmond, Newcastle Upon Tyne
An exceptional, fine and impressive vintage signet ring in 18 karat yellow gold; part of our gent's
Category

Vintage 1970s British Signet Rings

Materials

18k Gold, Yellow Gold

French 1960s Blood Jasper 18 Karat Yellow Gold Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle head hallmark. This elegant vintage signet ring is set with a
Category

Vintage 1960s French Retro Signet Rings

Materials

Jasper, Gold, 18k Gold, Yellow Gold

Onyx Ruby Diamond Signet Ring
Located in London, GB
A stunning black Onyx Signet Ring, adorned with rubies and diamonds on 18k gold, a true masterpiece.
Category

Vintage 1960s British Signet Rings

Materials

Diamond, Onyx, Ruby, 18k Gold

Mid Century 18 Karat Gold Lapis Lazuli Rectangle Signet Ring
Located in Vilnius, LT
This is a Mid Century signet ring crafted in 18K yellow gold. Circa 1950. It features rectangle
Category

Mid-20th Century Unknown Modern Signet Rings

Materials

Lapis Lazuli, Gold, 18k Gold

0.45ct Diamond Mens' Signet Ring in Two-Tone 18K Rose & White Gold. Retro, c1950
Located in MELBOURNE, AU
Italian provenance, it's crafted in two-tone 18K White & Rose Gold Centrally set with a Round Brilliant
Category

Vintage 1950s Italian Retro Signet Rings

Materials

Diamond, White Gold, 18k Gold, Rose Gold

French 1935s 7.50 Carat Tourmaline 18 Karat Yellow Gold Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle's head hallmark. Splendid antique signet ring, it features a
Category

Vintage 1930s French Retro Signet Rings

Materials

Tourmaline, Gold, 18k Gold, Yellow Gold

French Retro 1950s Lapis Lazuli 18 Karat Yellow Gold Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, eagle head hallmark. A sublime antique men's signet ring adorned with
Category

Vintage 1950s French Retro Signet Rings

Materials

Lapis Lazuli, Gold, 18k Gold, Yellow Gold

Neoclassical Gold & Silver French Signet Ring 1780’s
Located in Firenze, IT
Yellow gold and Silver Signet ring, engraved the family crest on square shape. Ring size: 8 Weight
Category

Antique 1780s French Neoclassical Signet Rings

Materials

18k Gold, Yellow Gold, Silver, Gold

Vintage Signet Gold and Diamonds Ring HRD Certified
Located in Esch-Sur-Alzette, LU
The Vintage Signet Gold and Diamonds Ring, HRD Certified, is a magnificent piece of jewelry that
Category

Mid-20th Century French Post-War Signet Rings

Materials

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

Antique 18ct Gold & Platinum Art Deco Signet Ring
Located in Brighton, GB
Antique Signet Ring 18ct Gold & Platinum Circa 1920’s Fabulous Art Deco Square Faced Signet
Category

Early 20th Century English Art Deco Signet Rings

Materials

Gold, 18k Gold, Platinum

Antique 1900s Yellow Gold Locket Signet Ring with Enamel
Located in Jesmond, Newcastle Upon Tyne
An impressive 18 karat yellow gold signet ring, ornamented with a hidden enamel compartment; part
Category

Antique Early 1900s English Signet Rings

Materials

18k Gold, Yellow Gold, Enamel

Imperial 18 Karat Gold Signet Ring, by Martyn Lawrence Bullard
Located in West Hollywood, CA
Unisex 18k rose gold square Signet ring, perfect for engraving Designed by Martyn Lawrence Bullard
Category

2010s American Modern Signet Rings

Materials

18k Gold

French 20th Century 18 Karat Yellow Gold Engraved Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, horse's head hallmark. The top of this antique signet ring is square
Category

Early 20th Century French Belle Époque Signet Rings

Materials

Gold, 18k Gold, Yellow Gold

Cartier Onyx Tank Ring 18k White Gold
By Cartier
Located in New York, NY
18 kt White Gold Total Weight: 22.3 grams Ring Size: US 8, EU 57 Cartier Pouch: Yes Paperwork: Not
Category

21st Century and Contemporary Signet Rings

Materials

Onyx, 18k Gold, White Gold

Victorian Hardstone Intaglio 18 Karat Yellow Gold Griffin Unisex Signet Ring
Located in Philadelphia, PA
Stamped with British assay marks for 18 karat gold and Birmingham Inside of shank is inscribed "Obit. May
Category

Antique 1880s Victorian Signet Rings

Materials

Agate, Gold, 18k Gold, Yellow Gold

0.50 Carat Round Diamond 18 Karat White Gold Claw Set Signet Ring
By Tresor Paris
Located in London, GB
0.50 Carat Round White Diamonds Men's Signet Style Claw set ring set in 18 Karat White Gold. This
Category

2010s British Modern Signet Rings

Materials

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

0.75 Carat Round White Diamond 18 Karat Yellow Gold Bespoke Men's Signet Ring
Located in London, GB
Meticulously crafted men's signet style ring in 18 Karat Yellow Gold featuring 16 round brilliant
Category

2010s British Modern Signet Rings

Materials

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

1.00 Carat Round White Diamond 18 KT Yellow Gold Men's Bespoke Signet Ring
By Hasbani Diamonds
Located in London, GB
1.00 Carat Round White Diamonds Men's Signet Style ring set in 18 Karat Yellow Gold. It has 16
Category

2010s British Modern Signet Rings

Materials

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

Vintage circa 1970s Diamond 18 Carat Yellow & White Gold Patterned Signet Ring
Located in Hamilton, AU
Forged in 18 carat gold, this classic ring features a patterned yellow gold band rising to a white
Category

20th Century Unknown Modern Signet Rings

Materials

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

DAVID YURMAN Novella Statement Silver Ring With 18K Gold And Citrine
By David Yurman
Located in New York, NY
Brand: David Yurman Condition: Never Worn Metal: Sterling silver with 18K gold Gemstone: Emerald
Category

21st Century and Contemporary Signet Rings

Materials

Citrine, 18k Gold, Silver

Antique Mars Ares Ring Intaglio Red Onyx solid 18K Gold ØUS 6.75 / 16.3 gr
Located in SE
Signet Intaglio Ring in solid 18K Orange / Rose / Red Gold with bezel set fine intaglio on Red Onyx
Category

Vintage 1910s European Art Deco Signet Rings

Materials

Onyx, 18k Gold

Antique Mother-of-Pearl Gaming Counter 18k Yellow Gold & Silver Ring with Bands
By Sarosi By Timeless Gems
Located in Los Angeles, CA
engraved and is set in a handmade 18k yellow gold and blackened silver mounting inspired by the
Category

Antique Late 18th Century American Artisan Signet Rings

Materials

Other, Pearl, Gold, 18k Gold, Yellow Gold, Silver

Victorian 18kt. gold Banded agate masonic ring, depicting a Square and Compass
Located in Braintree, GB
Antique Victorian 18kt. yellow gold Banded agate masonic signet ring, depicting a Square and
Category

Antique 1870s British Signet Rings

Materials

Agate, Gold, 18k Gold

Vintage 18k Gold Wooden Ring One-of-a-kind
Located in London, GB
18k gold square and band interior. Its geometric shapes and dazzling yellow gold accents are perfect
Category

20th Century Modern Signet Rings

Materials

18k Gold, Gold

Jones & Woodland Art Deco 4.00 Carat Natural Cat's Eye Alexandrite 18 Karat Ring
Located in Philadelphia, PA
Lankan in origin. Prong set in an undulating recessed white gold square form. Flanked by woven motif
Category

Vintage 1930s Art Deco Signet Rings

Materials

Alexandrite, 18k Gold, White Gold

Estate 13.40 Ct Star Sapphire Diamond Gent 18 Kt Ring
Located in Napoli, IT
This beautiful estate Gent ring is 1945/50 ca. Individually hand crafted of solid 18 KT white gold
Category

Mid-20th Century European Contemporary Signet Rings

Materials

Diamond, Star Sapphire, 18k Gold

Yellow Gold Square Ruby and Diamond Signet Ring
Located in Coral Gables, FL
Handsome 18 Karat Yellow Gold Square Top Ring Featuring 17 Channel and Bezel Set Square and Oval
Category

Late 20th Century Cluster Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

SALVINI 18K White Gold, Sapphire & Diamond Signet Ring sz 7
By Salvini
Located in New York, NY
This brilliant Salvini 18K white gold Signet ring features diamonds illuminating a grid of square
Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

18k Gold, White Gold

18 Karat White Gold Natural Diamond Signet Ring
By Vitale 1913
Located in Monte-Carlo, MC
18K white gold signet ring is from Timeless Collection. This exceptional piece of jewellery is made
Category

2010s Italian Contemporary Cocktail Rings

Materials

Diamond, White Diamond, White Gold, 18k Gold

Alex Jona Lapis Lazuli 18 Karat Yellow Gold Signet Ring
By Alex Jona
Located in Torino, IT
Alex Jona design collection, hand crafted in Italy, 18 Karat yellow gold ring set with a squared
Category

21st Century and Contemporary Italian Contemporary Fashion Rings

Materials

Lapis Lazuli, Gold, 18k Gold, Yellow Gold

1940s Diamond and Yellow Gold Signet Ring
Located in Jesmond, Newcastle Upon Tyne
An impressive vintage 0.52 carat diamond and 18 karat yellow gold, 18 karat white gold set signet
Category

Vintage 1940s Unknown Cluster Rings

Materials

Diamond, 18k Gold, Yellow Gold

1940s 4.50 Carats Aquamarine 18 Karat Yellow Gold Retro Signet Ring
Located in Poitiers, FR
Ring in 18 karat yellow gold, owl hallmark. Tank ring, it is decorated on its top of a rectangular
Category

Vintage 1940s French Retro Cocktail Rings

Materials

Aquamarine, Gold, 18k Gold, Yellow Gold

Signet Unisex Ring 14 Karat Yellow Gold Rubber Gothic Ring Designer Quartz Ring
Located in Jupiter, FL
METAL: 18KT gold NATURAL QUARTZ: Clarity/Color: Slightly Included Cut: Square Sugarloaf Diamonds
Category

21st Century and Contemporary Dome Rings

Materials

Quartz, 18k Gold, Yellow Gold

Alex Jona Mediterranean Coral 18 Karat Yellow Gold Signet Ring
By Alex Jona
Located in Torino, IT
Alex Jona design collection, hand crafted in Italy, 18 carat yellow gold ring set with a squared
Category

21st Century and Contemporary Italian Cocktail Rings

Materials

Coral, 18k Gold, Yellow Gold

Kutchinsky Lapis Lazuli 18 Carat Yellow Gold Textured Signet Ring, 1976
By Kutchinsky
Located in London, GB
meticulously crafted from 18 carat yellow gold with a textured finish top. The bold square mount is beautifully
Category

Vintage 1970s English Retro Band Rings

Materials

Lapis Lazuli, Gold, 18k Gold, Yellow Gold

Contemporary White Gold Diamonds Sapphires Aquamarine Ring
Located in Marcianise, Marcianise (CE)
and a dome ring. The dome part is embellished of sapphires and diamonds, as signet part a square shape
Category

21st Century and Contemporary Italian Contemporary Dome Rings

Materials

Aquamarine, Diamond, Sapphire, 18k Gold, White Gold

Certified 2.73 Carats Emerald Diamonds 18 Carats Yellow Gold Ring
By Les Pierres de Julie
Located in Paris, FR
Signet ring set with a square-cut emerald, the shoulders paved with diamonds. One of a kind
Category

2010s French Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

1930s Art Deco Diamond Paving 18 Karat Rose Gold Ring
Located in Poitiers, FR
Ring in 18 karat rose gold and platinum. Important Art Deco ring, its signet-style setting is set
Category

Vintage 1930s French Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Platinum, Gold, 18k Gold, Rose Gold

18 Karat Yellow Gold Square Signet Ring Large #3~#12
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring made of 18 karat yellow gold. The signet surface and inside the ring
Category

2010s Japanese Signet Rings

Materials

18k Gold

18 Karat Yellow Gold Square Signet Ring Large #21~#28
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring made of 18 karat yellow gold. The signet surface and inside the ring
Category

2010s Japanese Signet Rings

Materials

18k Gold

18 Karat Yellow Gold Square Signet Ring Large #13~#20
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring made of 18 karat yellow gold. The signet surface and inside the ring
Category

2010s Japanese Signet Rings

Materials

18k Gold

18 Karat Yellow Gold Square Signet Ring Small #3~#12
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring. The signet surface and inside the ring band is polished in contrast
Category

2010s Japanese Signet Rings

Materials

18k Gold

18 Karat Yellow Gold Square Signet Ring Small #13~#20
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring. The signet surface and inside the ring band is polished in contrast
Category

2010s Japanese Signet Rings

Materials

18k Gold

18 Karat Yellow Gold Square Signet Ring Small #21~#28
By SHIHARA
Located in Shibuya, Tokyo, JP
A classic square signet ring. The signet surface and inside the ring band is polished in contrast
Category

2010s Japanese Signet Rings

Materials

18k Gold

Diamond-Set Square 18 Karat Yellow Gold Men's Signet Ring
Located in Bangkok, TH
Diamond-set Square 18 Karat Yellow Gold Men's Signet Ring Please let us know should you wish to
Category

Late 20th Century Thai Signet Rings

Materials

Diamond, 18k Gold, Yellow Gold

Pavé Diamonds and 18k Rose Gold Signet 'Cluster' Ring
Located in Rome, IT
cover the signet and shank of the ring leaving out the color of the rose gold mount and creating a
Category

2010s Contemporary Signet Rings

Materials

Diamond, 18k Gold, Rose Gold

Square Sapphire and Diamond 18 Karat Matte Yellow Gold Unisex Signet Ring
By BOON
Located in Bangkok, TH
Square Sapphire and Diamond 18 Karat Matte Yellow Gold Unisex Signet Ring Please let us know
Category

Late 20th Century Thai Signet Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Square Chevalier Signet White Diamond Brilliant Cut Pavè Ring
Located in Valenza, IT
Brighten up the room with this stunning signet ring, designed and handcrafted by a talented artisan
Category

2010s Italian Artisan Signet Rings

Materials

Diamond, White Diamond, White Gold, 18k Gold

Square Blue Sapphire Diamond Channel-Set Fluted 18k Yellow Gold Men's Ring
Located in Bangkok, TH
Square Blue Sapphire Diamond Channel-Set Fluted 18K Yellow Gold Men's Ring Gold: 18K Yellow Gold
Category

Late 20th Century Signet Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Yellow Gold

Signet Reversible Single Black Diamond
By BARE Fine Jewelry
Located in Antwerp, BE
This square signet-inspired ring is expertly crafted by hand from 18-karat White gold, while the
Category

2010s Belgian Contemporary Signet Rings

Materials

Black Diamond, White Gold, 18k Gold

Signet Reversible Single Black Diamond
By BARE Fine Jewelry
Located in Antwerp, BE
This square signet-inspired ring is expertly crafted by hand from 18-karat gold, while the top of
Category

2010s Belgian Contemporary Signet Rings

Materials

Black Diamond, 18k Gold

Square white diamond pavè chevalier ring in 18kt white gold
Located in Valenza, IT
Introducing our exquisite 18kt White Gold Square Chevalier Ring, a true embodiment of Italian
Category

2010s Italian Artisan Signet Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

Square pink sapphires pavè fashion chevalier ring in 18kt rose gold
Located in Valenza, IT
Introducing our exquisite 18kt Rose Gold Square Chevalier Ring, a true embodiment of Italian
Category

2010s Italian Artisan Signet Rings

Materials

Diamond, White Diamond, Pink Sapphire, 18k Gold, Rose Gold

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18k Gold Square Signet For Sale on 1stDibs

Find the exact 18k gold square signet you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and yellow gold. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for a 18k gold square signet may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. There have been many well-made iterations of the classic 18k gold square signet over the years, but those made by SHIHARA, BARE Fine Jewelry and Sarosi By Timeless Gems are often thought to be among the most beautiful. While most can agree that any 18k gold square signet from our collection can easily elevate most outfits, but the choice of a diamond version from the 38 available is guaranteed to add a special touch to your ensemble. A square cut version of this piece has appeal, but there are also round cut and brilliant cut versions for sale. Most of our 18k gold square signet for sale are for women, but there are 78 pieces available to browse for men.

How Much is a 18k Gold Square Signet?

The price for a 18k gold square signet starts at $196 and tops out at $27,392 with these rings, on average, selling for $2,854.

Finding the Right signet-rings for You

Traditionally considered a ring for men, a vintage signet ring is a popular gift today for anyone who desires an expressive, timeless piece of jewelry that can feature all manner of engraved motifs, gemstones, specific symbols or monograms.

Whether it's an antique gold signet ring, diamond signet ring or some other classic iteration, signet rings get their name from signus, which means “sign” in Latin.

These rings, which may historically be referred to as “seal rings,” date back thousands of years and were used as a form of signature. Whatever may have been engraved on the ring — a married couple’s initials, a family crest — identified ownership for the purposes of authenticating documents and more when impressed on soft wax. During the Middle Ages, signet rings were symbols of power and prestige and common accessories for nobility. Later, during the 19th century, precious and semiprecious stones such as rubies and diamonds were added to gold signet rings as they took on a more ornate appearance than they had previously. 

In recent years, fashion has been primarily about individuality, and nothing is more personal than a jewel bearing a name or monogram. That is the reason jewelers have revived traditional signet rings, custom-engraving their designs with customers’ preferred words or symbols. Those who prefer the thrill of the hunt have a range of vintage letter charms and pendants to sift through.

And it isn't all about men's signet rings anymore, either — the accessory is for everyone. Princess Diana wore a signet ring that was a gift from Charles before their wedding, and we all know that the royals are top-tier fashion influencers, especially when it comes to rings.

Find vintage diamond signet rings, onyx signet rings and other types of rings on 1stDibs.