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Gubelin sapphire and diamond bombé cocktail ring, circa 1950.
By Gubelin
Located in London, GB
Gubelin sapphire and diamond bombé cocktail ring. Set to centre with one round transitional cut
Category

Vintage 1950s Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Gubelin sapphire diamond 18k yellow gold cocktail ring
By Gubelin Lucerne
Located in Beverly Hills, CA
This exquisite mid-century Gubelin cocktail ring showcases a luminous 2.10-carat cabochon-cut blue
Category

Vintage 1960s Modern Cocktail Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Platinum

Sapphire Bracelet by Gubelin 18k c1960s
By Gubelin
Located in Litchfield, CT
Circa 1960s, 18k, by Gubelin, Switzerland. Simple and elegant, this gorgeous line bracelet is all
Category

Vintage 1960s Swiss Tennis Bracelets

Materials

Sapphire, 18k Gold, White Gold

Vintage Gubelin Platinum Diamond Emerald Sapphire Brooch
By Gubelin
Located in New York, NY
1960s Gubelin platinum brooch. The Swiss jeweler crafted this piece in platinum with high quality
Category

Vintage 1960s Swiss Modern Brooches

Materials

Diamond, Emerald, Sapphire, Platinum

Vintage Gubelin Platinum Diamond Emerald Sapphire Ring
By Gubelin
Located in New York, NY
1960s Gubelin platinum cocktail ring. The Swiss jeweler crafted this piece in platinum with high
Category

Vintage 1960s Swiss Modern Cocktail Rings

Materials

Diamond, Emerald, Sapphire, Platinum

Gubelin White Gold Ring with 4.60 Carat Sapphire
By Gubelin
Located in AMSTERDAM, NL
sapphire of approx. 4.60 ct. This sapphire is “Colour-changing”. Origin: Sri Lanka. No indication of
Category

Early 2000s European Modernist Fashion Rings

Materials

Sapphire, 18k Gold, White Gold

Gubelin 1960's 18k gold, sapphire and diamond bangle
By Gubelin
Located in London, GB
This stylish 18k gold Gubelin bangle from the '60s contains 11 baguette cut Ceylon sapphires that
Category

Vintage 1960s Swiss Bangles

Materials

Diamond, Sapphire, 18k Gold

Ring with Pink Sapphire & Diamonds in Platinum by Gübelin
By Gubelin
Located in Lucerne, CH
: Gübelin Hallmark Platinum 950 1 sapphire, pink, octagonal cut, 3.41 ct., Madagascar, TE 2 diamonds-H
Category

21st Century and Contemporary Swiss Modern Solitaire Rings

Materials

Diamond, Pink Sapphire, Platinum

Alliance Ring with Sapphire in 18 karat White Gold by Gübelin
By Gubelin
Located in Lucerne, CH
: Gübelin Hallmark Assay mark: 750 18 Karat white gold 26 sapphires, baguette cut, tot. 4.00 ct. Size: 51
Category

20th Century Swiss Modern Band Rings

Materials

Sapphire, Blue Sapphire, White Gold

Ring with Sapphire & Diamonds in 18 Karat White Gold by Gübelin
By Gubelin
Located in Lucerne, CH
This exquisite ring by Gübelin features a captivating 2.18-carat oval-cut natural sapphire
Category

21st Century and Contemporary Swiss Modern Cocktail Rings

Materials

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

Gubelin Yellow Sapphire Diamond Yellow Gold 18K Clasp Pearl Necklace 1980S
By Gubelin
Located in Geneva, CH
Yellow Sapphire Cushion shape estimated approximately 5.50 / 6.50 carats (treated) surrounded by
Category

Vintage 1980s Swiss Beaded Necklaces

Materials

Diamond, Pearl, Yellow Sapphire, 18k Gold, Yellow Gold

Gubelin Gold Links Chain Necklace
By Gubelin
Located in Darnestown, MD
Gubelin 18 karat gold necklace with most unusual links. Each goes from narrow to a curved bulbous
Category

1990s Swiss Modern Link Necklaces

Materials

Sapphire, 18k Gold

Ring with Blue Sapphire and Diamonds in 18 Karat White Gold by Gübelin
By Gubelin
Located in Lucerne, CH
Discover the exquisite elegance of the Gübelin blue sapphire ring in celestial 18 Karat white gold
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Sapphire, Blue Sapphire, Diamond, White Gold, 18k Gold, Gold

Retro Gübelin Gold, Diamond, and Sapphire Clip Brooch of Stylized Bow Design
By Gubelin
Located in New York, NY
A Retro gold, sapphire, and diamond brooch designed as a stylized asymmetrical bow with a scrolled
Category

Vintage 1940s Swiss Retro Brooches

Materials

Diamond, Sapphire, Gold, Platinum

Elegant Morganite Diamond Pink Sapphire Earrings Gubelin, Switzerland
By Gubelin Lucerne
Located in Zurich, Zollstrasse
A pair of elegant 18 K yellow Gold earrings signed by Gübelin Lucerne set with 2 triangle shaped
Category

2010s Swiss Contemporary Dangle Earrings

Materials

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

Tie Pin Brooch with Diamond & Blue Sapphires in 18 Karat White Gold by Gübelin
By Gubelin
Located in Lucerne, CH
Introducing the epitome of sophistication: a tie pin brooch by the House of Gübelin. This
Category

20th Century Swiss Modern Brooches

Materials

Diamond, Blue Sapphire, Gold, 18k Gold, White Gold

Spectacular Fancy Sapphire Trilogy Ring by Gübelin in 18 Karat Rose Gold
By Gubelin Lucerne
Located in Lucerne, CH
sapphire, 1.15 carats In addition, two round rubies - the unmistakable hallmark of the Gübelin Ateliers
Category

2010s Swiss Contemporary Three-Stone Rings

Materials

Sapphire, Gold, 18k Gold, Rose Gold

Gübelin Rock Crystal and GIA Certified Fancy Colored Diamond Ring
By Gubelin
Located in Lucerne, CH
clarity. Accented with eight curving channel set rows of square step cut sapphires, total weight
Category

21st Century and Contemporary Swiss Contemporary Cocktail Rings

Materials

Diamond, Crystal, Sapphire, Rock Crystal, Yellow Diamond, Platinum

Signed 18K Gubelin George L'enfant Attributed Gold & Multi Gemstone Bracelet
By Gubelin
Located in Philadelphia, PA
, emeralds, sapphires, or rubies. Likely produced for Gübelin in the George L'enfant workshop with design
Category

Mid-20th Century Swiss Modern Retro Bracelets

Materials

Diamond, Emerald, Multi-gemstone, Ruby, Sapphire, Gold, 18k Gold

18K Gold Sapphire Diamond Ring, Gubelin
Located in New York, NY
Cushion-shaped sapphire weighs 3.24ct, accompanied by a Gubelin report stating the sapphire is of
Category

20th Century Band Rings

Materials

Diamond, Sapphire, 18k Gold

Vintage Emerald, Ruby, Sapphire, Diamond and 18k Gold Window Brooch Circa 1950
By Gubelin
Located in Jesmond, Newcastle Upon Tyne
A stunning, impressive and unusual vintage 2.80 carat emerald, 1.75 carat ruby, 2.10 carat sapphire
Category

Vintage 1950s Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, White Gold, Yellow Gold

2.11 Carat Gubelin Certified Burma No Heat Blue Sapphire
Located in Kowloon, HK
Experience the unmatched beauty and rarity of this 2.11 carat Burma No-Heat Sapphire, sourced
Category

2010s Loose Gemstones

Materials

Blue Sapphire

GUBELIN Certified 9 Carat Blue Sapphire Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
Exceptional Certified 9 Carat Blue Sapphire Diamond Ring Exceptional Certified 9 Carat Blue
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Gubelin Certified 9.57 Carat Burmese Sapphire Diamond Cocktail Ring
Located in New York, NY
A cocktail ring showcasing a cushion blue sapphire weighing a total of 9.57 carats. The sapphire
Category

21st Century and Contemporary French Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Gubelin 3 carat sapphire diamond 18k yellow gold brooch
Located in Beverly Hills, CA
This exquisite mid-century Gubelin brooch showcases eight hexagon-cut blue sapphires totaling
Category

Vintage 1960s Modern Brooches

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Platinum

Unheated 3 Carat Classic Kashmir Sapphire with AGL & Gubelin Certification
By Merkaba
Located in Beverly Hills, CA
Unheated 3.34 Carat Classic Kashmir Sapphire: A Rare Gem for the World’s Most Discerning Collectors
Category

21st Century and Contemporary Indian Art Deco Loose Gemstones

Materials

Sapphire, Blue Sapphire

18 K White Gold Ring Fancy Sapphires Diamond Moonsotne Gueblin Lucerne
By Gubelin Lucerne
Located in Zurich, Zollstrasse
pave set with orange and pink fancy Sapphires weighing 1.63 ct. Signed Gubelin Lucerne Switzerland
Category

2010s Swiss Contemporary Band Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Gubelin GRS Certified 9 Ct. Blue Sapphire Diamond Platinum Ring
Located in Chicago, IL
Centering a cushion-shaped sapphire, flanked by 9 cushion-shaped diamonds, decorated throughout
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Gubelin Certified 3.19 Carat No Heat Blue Sapphire Diamond Platinum Ring
Located in Kowloon, HK
This exquisite ring showcases a Gubelin certified 3.19-carat Burmese no-heat sapphire, a gemstone
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Emilio Jewelry Gubelin Certified 43.00 Carat Unheated Ceylon Sapphire Ring
By Emilio!
Located in New York, NY
Sapphire weighing 43.02 carats, and certified by Gubelin and GIA as an untreated, UNHEATED Sri Lankan
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Blue Sapphire

Gubelin Certified 2.11 Carat Burma No Heat Sapphire Diamond Platinum Ring
Located in Kowloon, HK
This exquisite ring showcases a Gubelin certified 2.11-carat Burmese no-heat sapphire, a gemstone
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, Platinum

New Platinum 5.32ctw Gubelin Emerald Cut Sapphire & Custom Cut Emerald Ring
Located in Montclair, NJ
and features a magnificent, Gubelin certified, elongated emerald cut sapphire solitaire that's
Category

2010s American Three-Stone Rings

Materials

Emerald, Sapphire, Platinum

Gubelin Certified 2.92 Carat Burma No Heat Pink Sapphire Diamond Platinum Ring
Located in Kowloon, HK
This extraordinary ring features a Gubelin-certified 2.92-carat Burmese no-heat purplish-pink
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, Pink Sapphire, Platinum

Spectra Fine Jewelry Gubelin Certified 12.03 Carat Burma Sapphire Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
Burma, certified by Gubelin for its natural, unheated beauty. The vibrant blue sapphire is cradled in a
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

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

Marcus & Co., 13.85ct Burma, No Heat, Sapphire Brooch, AGL and Gubelin Certified
Located in Scottsdale, AZ
For sale is a platinum and 18K yellow gold AGL and Gubelin Certified 13.85ct Pear shaped sapphire
Category

20th Century Brooches

Materials

Diamond, Sapphire, Platinum

Gubelin Certified 2.51 Carat Burma No Heat Blue Sapphire White Diamond Earrings
Located in Kowloon, HK
An epitome of prestige and refinement, these Gübelin-certified 2.51-carat Burma no-heat sapphire
Category

2010s Stud Earrings

Materials

White Diamond, Blue Sapphire, Platinum

Mens Heavy Platinum 9.01ct Gubelin Oval Cabochon Bezel No Heat Sapphire Ring
Located in Montclair, NJ
, Gubelin certified, natural sapphire stone perfectly bezel set at its center. The oval cabochon cut
Category

2010s American Solitaire Rings

Materials

Sapphire, Platinum

Gubelin GIA Certified 2.38 Carat Burma No Heat Sapphire Diamond Platinum Ring
Located in Kowloon, HK
This exquisite ring showcases a Gubelin as well as GIA certified 2.38-carat Burmese no-heat
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, Platinum

18k White Gold Gubelin Round Cabochon Ceylon Sapphire & 0.63ct Diamond Halo Ring
Located in Montclair, NJ
Gubelin certified round cabochon cut sapphire neatly prong set at the center of a halo of round brilliant
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, White Gold

Platinum 4.24ctw Gubelin NO HEAT Oval Sapphire & Baguette Diamond 3 Stone Ring
Located in Montclair, NJ
solid platinum and features a magnificent, Gubelin certified, old sapphire solitaire that's perfectly
Category

Vintage 1980s Engagement Rings

Materials

Diamond, Sapphire, Platinum

New Platinum Gubelin 5.63ct Triangle Cabochon Sapphire Pear Diamond 3 Stone Ring
Located in Montclair, NJ
features a magnificent, Gubelin certified, natural sapphire stone perfectly claw-prong set at its center
Category

2010s American Engagement Rings

Materials

Diamond, Sapphire, Platinum

New Platinum 4.99ctw Gubelin Oval Cabochon Bezel Sapphire & Diamond 3 Stone Ring
Located in Montclair, NJ
magnificent, Gubelin certified, natural sapphire stone perfectly bezel set at its center. The oval cabochon
Category

2010s American Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Fabergé Collection Three Colors of Love Gubelin Cert 6.01 Carat Sapphire Ring
By Fabergé
Located in Montreux, CH
) 1 Cushion Sapphire 6.01 cts (Gubelin Certified: Burma, no heating)
Category

2010s British Belle Époque Solitaire Rings

Materials

Diamond, Blue Sapphire, Platinum

SSEF and Gubelin 1.59ct Three Stone Kashmir Sapphire and Diamonds Ring, Platinum
Located in New York, NY
both SSEF and Gubelin, weighing 1.59 carats. This exceptional sapphire exhibits the coveted velvety
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Vintage 14k White Gold Gubelin 1.62ctw Pear Cut Ceylon Sapphire & Diamond Ring
Located in Montclair, NJ
certification for the sapphire. Stock Number: MK-13085003 --Certification Details:-- Laboratory: Gubelin Report
Category

20th Century Engagement Rings

Materials

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

Antique Art Deco Platinum Gubelin Ceylon No Heat Cabochon Sapphire Diamond Ring
Located in Montclair, NJ
and features a gorgeous, Gubelin certified, natural sapphire neatly bezel set at its center. The
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Vintage 14k White Gold Gubelin 2.12ctw Pear Cut Ceylon Sapphire & Diamond Ring
Located in Montclair, NJ
condition. Comes w/ Gubelin certification for the sapphire. Stock Number: MK-890110060 --Certification
Category

20th Century Engagement Rings

Materials

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

New 14k Gold Gubelin Pear Cabochon Sapphire Diamond Halo Teardrop Pendant Chain
Located in Montclair, NJ
solid 14k white gold. The fine quality sapphire solitaire is Gubelin certified with a pear cabochon cut
Category

2010s American Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, White Gold

7.37 Carat No-Heat Burmese Sapphire Diamond 18k White Gold Ring, Gübelin Cert
Located in Beverly Hills, CA
A rare and top-quality gem blue sapphire takes center stage. It weighs an impressive 7.37 carats
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Blue Sapphire, Sapphire, Diamond, White Gold, 18k Gold

12.91 Carat Blue Sapphire Burma No Heat And Diamond Ring, Gubelin Certified.
By MOGULDIAM INC
Located in New York, NY
Regal and royal blue wonder. This truly gorgeous Gubelin certified 12.91 carat Burma no heat blue
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Gübelin Certified Sri Lanka NTE Sapphire Ring with Diamonds in 18 Karat Gold
Located in Lucerne, CH
. *Accompanied by Gübelin Gem Lab Report no. 21090131, dated 11 October 2021, stating that the sapphire is of Sri
Category

Late 20th Century European Modern Cocktail Rings

Materials

Diamond, Sapphire, White Gold

Gubelin 3 Carat No Heat Burmese Blue Sapphire and Diamond 18 Karat Gold Ring
Located in Bangkok, TH
A brand new blue sapphire ring. The ring's center stone is 3.01 carat Burmese blue sapphire
Category

2010s Three-Stone Rings

Materials

Diamond, Emerald, Blue Sapphire, 18k Gold, White Gold

Gubelin Certified 7.86 Sri Lanka ‘Ceylon’ No Heat Sapphire Diamond Gold Ring
Located in Marcianise, Marcianise (CE)
Sapphire (7.86 ct) certify by Gubelin Gem Lab and surrounded by white diamonds and baguette cut white
Category

Vintage 1970s Retro More Rings

Materials

White Diamond, 18k Gold, White Gold

Gubelin Certified 3.01 Cts. Burma No Heat Oval Cut Blue Sapphire Ring in 18K W/G
By Rewa Jewellery
Located in Bangkok, TH
This unique ring features a 3.01-carat Gubelin-certified Burma no heat oval cut blue sapphire at
Category

2010s Thai Fashion Rings

Materials

Diamond, Emerald, Blue Sapphire, Gold, 18k Gold, White Gold

Gubelin Certified 11 Carat Blue BURMA Unheated Diamond Engagement Ring
Located in Chicago, IL
Gubelin Certified 11 Carat Blue Unheated Blue Sapphire Diamond Engagement Ring is a remarkable
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Gubelin 0.96ct Emerald Cut Natural Colombian Emerald Engagement Ring, Platinum
Located in New York, NY
This exquisite halo ring showcases a natural 0.96-carat Colombian emerald, certified by Gubelin and
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Sapphire, Platinum

Patek Philippe Ladies Yellow Gold Ornate Gubelin Band Manual Wristwatch
By Patek Philippe
Located in Sherman Oaks, CA
& Tic Marks 11 mm Wide 15 mm Long Amazing 18k Yellow Gold Criss-Cross Gubelin Band Includes Alternating
Category

Early 20th Century Wrist Watches

Materials

Emerald, Ruby, Sapphire, 18k Gold

6.30 Kashmir No Heat Cabochon Deco Ring in Platinum AGL / Gubelin Certifications
Located in Great Barrington, US
formative lab certifications for Kashmir sapphires, AGL and Gubelin. Classic velvety blue Kashmir color
Category

Vintage 1920s American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire

Emilio Jewelry Certified 6.00 Carat Cornflower Blue Kashmir Sapphire
By Emilio!
Located in New York, NY
/Gia Building in New York's Diamond District. Certified by Grs, Gubelin, and SSEF this Kashmir sapphire
Category

21st Century and Contemporary Three-Stone Rings

Materials

Sapphire

Patrick Mauboussin 18K Blackened Gold Sapphire, Ruby & Diamond Necklace
By Patrick Mauboussin
Located in Beverly Hills, CA
certified purple sapphire (Gubelin Report #0906143). Crafted with a flexible openwork design and a removable
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Ruby, Sapphire, Gold, 18k Gold

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Gubelin Sapphire For Sale on 1stDibs

You are likely to find exactly the gubelin sapphire you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect gubelin sapphire among the distinctive items we have available, which includes versions made as long ago as the 20th Century as well as those produced as recently as the 21st Century. As it relates to this specific piece, our collection includes designs that are universally popular, but 3.5 Carat and 4 Carat carat weights, specifically, are sought with frequency. A gubelin sapphire from Gubelin, Gubelin Lucerne and Tiffany & Co. — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for an oval cut iteration of this accessory, while there are also cushion cut cut and emerald cut cut versions available here, too. If you’re browsing our inventory for a gubelin sapphire, 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 Gubelin Sapphire?

The price for a gubelin sapphire starts at $1,275 and tops out at $1,175,000 with these rings, on average, selling for $27,000.

The Legacy of Sapphire in Jewelry Design

On 1stDibs, shop the bright blue gems that star in sapphire rings, sapphire necklaces and other vintage and antique sapphire jewelry

Sapphires — the stone of choice for Napoleon, Princess Diana and Elizabeth Taylor — have been a favorite of aristocrats and the well-to-do since the time of the Ancient Greeks.

Picture a sapphire. If the stone you conjure is a deep cornflower blue, you’re seeing only part of the picture. Although blue Kashmirs are considered the most valuable, sapphires come in every color except red. No matter the hue, this very special gem is rich in history and beloved by royals (FYI, Princess Diana and Kate Middleton share an 11-carat sapphire engagement ring), so September babies are in very noble company.

America’s version of royalty — old money and celebrities — have also shown a predilection for the blue stones. In 1940, John D. Rockefeller Jr. had Cartier mount a 62-carat sapphire he had bought from an Indian maharajah in a brooch for his first wife, Abby Aldrich Rockefeller; in 2001, the piece sold for a then-record of $3,031,000 at Christie’s New York.

The grand dame of jewelry, Elizabeth Taylor had a passion for the gems that her lovers were happy to indulge. Second husband Michael Wilding gave her an engagement ring set with a cabochon sapphire, while Richard Burton famously presented her with a BVLGARI sautoir set with diamonds and sapphires, including at its center a cabochon Burmese weighing 52.72 carats. One of the star lots in the sale of Taylor’s jewels at the Christie’s New York in 2011, it sold for $5,906,500.

You don’t have to have blue blood or a bulging bank account, however, to get an eyeful of this much-coveted gem. A number of outstanding examples reside in public collections.

The Smithsonian Museum of Natural History owns the 423-carat Logan sapphire, a gift from the Guggenheim family, and the Hall sapphire and diamond necklace, designed by Harry Winston and featuring 36 fine, well-matched cushion-cut Sri Lankan sapphires weighing a combined 195 carats. Also in the collection is the Bismarck sapphire necklace, designed by Cartier and sporting a central sapphire weighing 98.6 carats, which Mona Von Bismarck donated to the museum.

Sapphires are composed of corundum. Their color derives from trace elements, such as iron, titanium, chromium, copper or magnesium. When the trace element produces a ruby hue, the stone is called, what else, a ruby. (which is, as mentioned above, why sapphires cannot be red by definition).

The allure of large gemstones endures throughout the periods characterized as vintage, and sapphire features frequently in vintage engagement rings. (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.)  

Find an exquisite collection of vintage and antique sapphire jewelry on 1stDibs.