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GIA Platinum Sapphire Diamond Unheated Pendant Vintage VS Necklace 14.13 Carats
Located in Sylvania, GA
Cut Sapphire: 7.65 Carats 14 Sparkling Diamonds VS-S1 Clarity and G-H Color: approx. 6.48 Carats
Category

20th Century Art Deco Pendant Necklaces

Materials

Diamond, Blue Sapphire, Sapphire, Gold, Platinum, 14k Gold, White Gold

Amazing 5.50 Carat Sapphire Diamond Ring
Located in New York, NY
Made of platinum, this ring is centered with a natural cushion cut sapphire that weighs
Category

20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

Victorian Era 3.82 Carat No Heat Sapphire and Diamond GRS Certified Brooch
Located in Miami, FL
1800's Victorian Era Silver & 9K Gold Brooch with No Heat 3.82 Carat Cushion Sapphire Brooch
Category

21st Century and Contemporary Baroque Brooches

Materials

Diamond, Blue Sapphire, Sapphire, Gold, 9k Gold, Silver

Le Vian 1.33 Carat Sapphire White Diamond Platinum Rose Gold Ring
By Le Vian
Located in Great Neck, NY
/3 carat cushion cut Sapphire centered in between two White Diamonds all surrounded in more White
Category

2010s Fashion Rings

Materials

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

0.42 Carat Diamond/0.46 Carat Blue Sapphire 18 Karat Gold Pendant Necklace
By Sebastian Bernard
Located in Los Angeles, CA
18K Gold Cushion Shape Diagonal Pendant with 4 Invisible Set Princess Cut Blue Sapphires (Total Gem
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, Blue Sapphire, 18k Gold

0.42 Carat Diamond/0.46 Carat Yellow Sapphire 18 Karat Gold Pendant Necklace
By Sebastian Bernard
Located in Los Angeles, CA
18K Gold Cushion Shape Diagonal Pendant with 4 Invisible Set Princess Cut Yellow Sapphires (Total
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, Yellow Sapphire, 18k Gold

3.98 Carat Royal-Blue Ceylon Sapphire Diamond Platinum Ring, GRS Certified
Located in Beverly Hills, CA
classic source of blue sapphire. It is surrounded by 1.60 carats of baguette-cut diamonds which spiral
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Sapphire, Platinum

Spectra Fine Jewelry AGL-Certified 13.57 Carat Madagascar Sapphire Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
-carat cushion-cut sapphire from Madagascar, radiating a deep and mesmerizing blue hue. The sapphire is
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

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

Certified 6.96 Carat No Heat Natural Green Sapphire Diamond Ring Unheated
Located in New York, NY
MAGNIFICENT JEWELS 5.56ct. GIC certified Natural Sapphire Amazing Rectangular Cushion cut Very Very
Category

2010s American Solitaire Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

10.36 Carat Morganite Sapphire Diamond Rose Gold Cocktail Ring
By Roshe Jewels
Located in Los Angeles, CA
! It has a 9.31 Carat Cushion/Oval Cut Morganite and has 20 Round Cut Diamonds that weigh 0.39 Carats
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Morganite, Sapphire, 14k Gold, Rose Gold

Antique 1.90 Carat Pink and Blue Sapphire 18k Yellow Gold Twist Ring Circa 1905
Located in Jesmond, Newcastle Upon Tyne
twist ring shank is ornamented with a cushion cut blue and pink sapphire, millegrain decorated collet
Category

Antique Early 1900s Unknown Band Rings

Materials

Pink Sapphire, Blue Sapphire, Platinum, Yellow Gold

Edwardian Platinum Sapphire Diamond Ring
Located in Narberth, PA
, this ring features a 1.41ct cushion cut Ceylon sapphire, which is held within a four-prong setting. The
Category

Vintage 1910s Edwardian Engagement Rings

Materials

Diamond, Sapphire, Platinum

3 Carat GIA Certificate G Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
A bespoke 3.00 carat cushion cut diamond engagement ring with the perfect combination of elegance
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

1930s Natural 9.36 Carat Ceylon Sapphire Diamond Art Deco Signet Ring
Located in Poitiers, FR
with geometric lines features a cushion-cut sapphire in the center, held in place by 4 wide, flat claws
Category

Vintage 1930s French Art Deco Signet Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum, Gold, 18k Gol...

Certified 3.75 Carat Sapphire and Diamond White Gold Cocktail Ring, Circa 1930
Located in Jesmond, Newcastle Upon Tyne
pierced decorated design displays a feature 3.75Ct unheated cushion cut blue sapphire, bezel set in relief
Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 15k Gold, 9k Gold, White Gold

Tiffany Co 2.50 Carat Diamond 6 Carat Sapphire Aqua Tourmaline Plat Bracelet
Located in New York, NY
Sapphire 2.00 Carat Tourmaline 2.00 Carat Cushion Brilliant Platinum Gemstone Bracelet Style: Gemstone
Category

20th Century Link Bracelets

Materials

Diamond, Sapphire, Tourmaline, Platinum

3 Carat GIA Certificate E Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
A bespoke ring with one of the best colors and clarity center diamond, 3.00 carat cushion cut
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

5.50ct Cushion Blue Topaz Engagement Ring 0.66 Carat Round Diamond in 18ct Gold
By Hasbani Diamonds
Located in London, GB
This Stunning 5.50ct Cushion Cut Blue Topaz Engagement Ring set in 18ct White Gold with Four Claws
Category

2010s British Modern Engagement Rings

Materials

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

Elongated Cushion Green Tsavorite Sapphire Onyx Diamond Art Deco Style Gold Ring
By Unbranded
Located in Oakton, VA
Gemstones I Type: Blue Sapphire Shape: French Cut Size: 2 4 mm. Number: 16 Weight: 1.05 Carat (approx
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

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

1.55 Carat Multi Sapphire Diamond Drop Dangle Earrings in 18K White Gold
By VR Jewels
Located in New York, NY
sparkling, luxurious look featuring cushion cut gemstone. If you love to gravitate towards unique styles
Category

21st Century and Contemporary American Modern Dangle Earrings

Materials

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

GIA Sapphire NO Heat Diamond 14K Pendant Vintage Necklace 18K Chain 5.46 Carats
Located in Sylvania, GA
SAPPHIRE. Gorgeous Sapphire is Crowned With 2.36 Carats of Sparkling White European Cut Diamonds
Category

20th Century Victorian Pendant Necklaces

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, 14k Gold, Yellow Gold

Platinum 0.40 Carat Round Diamond Twisted Love 4 Prong Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
Certificate Clarity: SI (eye clean) Cut: Round Cut Top Width: 4 mm (widest point) Made by Hasbani Diamonds
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

Raymond Yard Natural Burma Sugarloaf Cut Burma Sapphire Diamond Platinum Ring
By Raymond C. Yard
Located in Greenwich, CT
Simply enchanting. This Raymond Yard natural no heat Burma sugarloaf cushion cut 8.92 carat
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Platinum Engagement 0.68 Carat Round Diamond Bespoke Twisted Love 4 Prong Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in high grade Platinum 950 to British Standard, with a total of 0.68 Carat White
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.94 Carat Platinum Engagement Round Diamond Bespoke Fancy Vine 4 Prong Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in high grade Platinum 950 to British Standard, with a total of 0.94 Carat White
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.50 Carat Round Diamond Bespoke Twisted Love 4 Prong Platinum Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in high grade Platinum 950 to British Standard, with a total of 0.50 Carat White
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

Platinum Engagement 0.82 Carat Round Diamond Bespoke Fancy Twist 4 Prong Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in high grade Platinum 950 to British Standard, with a total of 0.82 Carat White
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

3.93 Carat AGL Certified Sapphire Diamond Platinum Ring
Located in New York, NY
This impressive platinum ring is centered with an AGL certified cushion cut sapphire that weighs
Category

20th Century Three-Stone Rings

Materials

Diamond, Blue Sapphire, Platinum

Luxury Diamond 14K (18K Custom) White Gold Duo Cushion Cut Pear Halo Rings
Located in Los Angeles, CA
– 3.0 mm Size : 6–7 Diamond Color : G-H Diamond Color Clarity : VS1–VS2 Cushion Cut Diamond Carat Weight
Category

2010s American Modern Fashion Rings

Materials

14k Gold, Rose Gold, White Gold, Yellow Gold, Platinum

Antique 1.50 Carat Sapphire and Diamond Yellow Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
frame is ornamented with a central cushion mixed cut sapphire, flanked on either side by a slightly
Category

Antique Early 1900s Unknown Cocktail Rings

Materials

Diamond, Blue Sapphire, Sapphire, 18k Gold, Yellow Gold

Untreated Sapphire Diamond Ring 4.04 Carat Madagascar AGL Certified
Located in Northampton, MA
A mixed cut cushion-shaped 4.04 unheated royal blue sapphire from Madagascar is the center of
Category

2010s Contemporary Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold

18K Yellow Gold 3/8 Cttw Diamond 5 4/5 Cttw Blue Sapphire Bumblebee Brooch Pin
Located in New York, NY
Gemstones Gemstone Count: Total 40 Gemstones 38 Cushion-Cut Blue Sapphire and 2 Round-Cut red Ruby Gemstones
Category

21st Century and Contemporary Indian Modern Brooches

Materials

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

1.20 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement RIng
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 1.20 Carat White Diamond. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.95 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
(total) Centre Stone: 0.75 Carat Colour: G – H – Independent Certificate Clarity: SI (eye clean) Cut
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.83 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
(total) Centre Stone: 0.63 Carat Colour: G – H – Independent Certificate Clarity: SI (eye clean) Cut
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

1.68 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 1.68 Carat White Diamonds. Set in an open
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

1.45 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 1.45 Carat White Diamonds. Set in an open
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

2.18 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 2.18 Carat White Diamonds. Set in an open
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

1.20 Carat Basaltic Sapphire 0.54 Carat Diamond, 18k Yellow Gold Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
Burmese sapphire ring. Sapphire Quality Origin Basaltic Color Blue Cut Round Faceted Content 1.20 carats
Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold, Platinum

0.70 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 0.70 Carat White Diamond. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.50 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 0.51 Carat White Diamond. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Diamond, Amethyst, Aquamarine, Citrine, White Diamond, Blue Diamond, Yel...

7.10 Ct Ceylon Sapphire Diamond Platinum Antique Ring
Located in Chicago, IL
Circa 1910s The ring is finely crafted in platinum. It features a natural unheated cushion cut
Category

Vintage 1910s Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Style French 5 Carat Ceylon Sapphire Diamond 18 Karat White Gold Ring
Located in Poitiers, FR
gold ring boasts a cushion cut Ceylan Blue sapphire held by 4 claws surrounded by brilliant cut
Category

2010s French Art Deco Engagement Rings

Materials

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

0.40 Carat Round Diamond Twisted Love 18 Karat Rose Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
(eye clean) Cut: Round Cut Top Width: 4 mm (widest point) Made by Hasbani Diamonds London. We believe
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

0.95 Carat Round Diamond Twisted 18 Karat Rose Gold 4 Prong Love Engagement Ring
By Hasbani Diamonds
Located in London, GB
(total) Centre Stone: 0.75 Carat Colour: G – H – Independent Certificate Clarity: SI (eye clean) Cut
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

1.20 Carat Round Diamond Twisted 18 Karat Rose Gold 4 Prong Engagement Love Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat Rose Gold, with a total of 1.20 Carat White Diamond. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Blue Diamond, Yel...

AGL Certified 8 Carat No Heat Kashmir Sapphire, Burma Ruby, Diamond Stack Ring
Located in Miami, FL
Certified Cushion Cut Burma Ruby, Kashmir Sapphire, & Diamond Stackable Ring Crafted in 18k White & Yellow
Category

21st Century and Contemporary Indian Art Nouveau Cocktail Rings

Materials

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

GIA Certified No Heat 7.71 Carat Sapphire Diamond Ring
Located in New York, NY
This stunning 18k gold ring features a lovely cushion cut GIA certified sapphire that weighs 7.71ct
Category

20th Century Cocktail Rings

Materials

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

Pink Sapphire and Diamond Ribbon Pendant
Located in COTTESLOE, AU
carat cushion cut pink sapphire set in four claws - 98 round brilliant cut diamonds grain and claw set
Category

21st Century and Contemporary Pendant Necklaces

Materials

Pink Sapphire, 18k Gold

Unusual Art Deco Yellow Sapphire with Calibre Amythests
Located in New York, NY
Unusual Elegant French Art Deco Ring with Calibre Cut Amythests and Cushion Cut Yellow Sapphire
Category

Vintage 1930s French Art Deco More Rings

Materials

Amethyst, Yellow Sapphire, 18k Gold

Natural Vivid Pink Sapphire Loose Gemstone for Jewelry Making, 1.02 Ct
Located in Kowloon, HK
: Vivid Pink ◆ ORIGIN: Sri Lanka ◆ WEIGHT: 1.02 Ct ◆ CUT: Cushion ◆ LENGTH: 7.15 mm ◆ WIDTH: 5.28 mm
Category

2010s Hong Kong Artisan Loose Gemstones

Materials

Pink Sapphire

Platinum, Sapphire, and Diamond Ring
Located in Princeton, NJ
A platinum (PT950), sapphire, and diamond ring centering a cushion cut sapphire of 3.22 carats
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Platinum Sapphire with Pave Set Diamonds Ring
By Christopher Bilton
Located in 徳島市, JP
Handmade platinum ring set with a square cushion cut dark blue sapphire with 10 pave set diamond
Category

2010s Japanese Solitaire Rings

Materials

Diamond, Sapphire, Platinum

Madagascan Sapphire and Diamond Ring in Platinum - Antique
Located in Jesmond, Newcastle Upon Tyne
rings. Sapphire Quality: Origin: Madagascar Colour: Blue Cut: Square Cushion Content: 8.80 carats
Category

Vintage 1930s Unknown Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Sapphire and Diamond Cluster Ring
Located in Chipping Campden, GB
A delightful oval cut sapphire and diamond cluster ring set in platinum throughout. The cushion cut
Category

Early 20th Century Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

0.40 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
Located in London, GB
(eye clean) Cut: Round Cut Top Width: 4 mm (widest point) Made by Hasbani Diamonds London. We believe
Category

2010s British Modern Engagement Rings

Materials

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

Cartier Sapphire and Diamond Flower Pin in Platinum
By Cartier
Located in Philadelphia, PA
cushion cut sapphires that weigh approximately 7.30 carats; the pin is accompanied with an AGL Thai No
Category

21st Century and Contemporary Unknown Brooches

Materials

Diamond, Sapphire, Platinum

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4 Carat Cushion Cut Sapphire For Sale on 1stDibs

You are likely to find exactly the 4 carat cushion cut sapphire you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from gold, 18k gold and white gold — can elevate any look. Find an antique version now, or shop for 508 vintage or 553 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a 4 carat cushion cut sapphire from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. There have been many well-made iterations of the classic 4 carat cushion cut sapphire over the years, but those made by Polya Medvedeva Jewellery, Roshe Jewels and Gems and Jewels UK are often thought to be among the most beautiful. See these pages for a cushion cut iteration of this accessory, while there are also antique cushion cut cut and oval cut cut versions available here, too. There aren’t many items for men if you’re seeking a 4 carat cushion cut sapphire, as most of the options available are for women and unisex.

How Much is a 4 Carat Cushion Cut Sapphire?

The price for a 4 carat cushion cut sapphire starts at $70 and tops out at $432,205 with these rings, on average, selling for $8,337.

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.