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12 Carat Oval Blue Sapphire

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1.34 Carat Paraiba Tourmaline and Diamond Engagement Ring Set in Platinum
Located in Tokyo, JP
A beautiful and elegant Engagement Ring featuring a 1.34 Carat Paraiba Tourmaline and 0.42 Carats
Category

2010s Japanese Modern Engagement Rings

Materials

Diamond, Tourmaline, Platinum

6.55 Carat Natural Aquamarine and Diamond Cocktail Ring Set in Platinum
Located in Tokyo, JP
A beautiful Cocktail Ring featuring a 6.55 Carat Natural Aquamarine and 0.60 Carats of White Round
Category

2010s Japanese Modern Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

GIA Certified 0.65 Carat Neon, Brazilian Paraiba Tourmaline Diamond Ring
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.65 Carat Natural Brazilian Paraiba Tourmaline and 0.19
Category

20th Century Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.26 Carat Neon, Brazilian Paraiba Tourmaline Diamond Ring
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.26 Carat Natural Brazilian Paraiba Tourmaline and 0.17
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

8.75 Ct. Opal with Diamond Sapphire Emerald Cocktail Ring in 18K White Gold
Located in Bangkok, TH
mesmerizing look highlights 8.75 carats oval shaped blue-green Ethiopian opal center stone. A frame of
Category

21st Century and Contemporary Thai Art Deco Cocktail Rings

Materials

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

GIA Certified 0.26 Carat Brazilian Paraiba Tourmaline Ring set in Platinum
Located in Tokyo, JP
An elegant engagement ring showcasing a 0.26 Carat oval-shaped, natural Brazilian Paraiba
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Tourmaline, Paraiba, Diamond, Platinum

9.33 Carat Natural Aquamarine and Diamond Cocktail Ring Set in Platinum
Located in Tokyo, JP
A stunning Cocktail Ring featuring a 9.33 Carat, Natural Aquamarine and 1.12 Carats of Round
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

0.25 Carat Natural Paraiba Tourmaline and Diamond Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a 0.254 Carat Natural Brazilian Paraiba Tourmaline and 0.23 Carats of
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Tourmaline, Paraiba, Platinum

6.30 Carat Natural Aquamarine and Diamond Cocktail Ring Set in Platinum
Located in Tokyo, JP
A beautiful Cocktail Ring featuring a 6.30 Carat Aquamarine and 1.17 Carats of White Round
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

0.79 Carat Brazilian Paraiba Tourmaline Diamond Cocktail Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a 0.79 Carat Natural Paraiba Tourmaline and 1.04 Carats of Diamond
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 1.30 Carat Natural Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 1.30 Carat Natural Mozambique Paraiba Tourmaline and
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 3.28 Carat Natural Brazilian Paraiba Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified Carat Natural Brazilian Paraiba Tourmaline and 0.71
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

0.19 Carat Natural Paraiba Tourmaline and Diamond Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a 0.19 Carat Natural Brazilian Paraiba Tourmaline and 0.68 Carats of
Category

21st Century and Contemporary Japanese Modern Cluster Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

13.91 Ct. Coral Sapphire Emerald Diamond Art Deco Style Brooch in 14K White Gold
Located in Bangkok, TH
Cut Number: 8 Weight: 0.67 Carat (approx.) Accent Gemstones II Type: Blue Sapphire Shape: French Cut
Category

21st Century and Contemporary Thai Art Deco Brooches

Materials

Coral, Diamond, Emerald, Sapphire, 14k Gold, White Gold

2.42 Carat Natural Aquamarine and Diamond Double Halo Ring Set in Platinum
Located in Tokyo, JP
A beautiful Cocktail Ring featuring a 2.42 Carat Natural Aquamarine and 1.18 Carats of White Round
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Very Rare 0.18 Carat Natural Hauynite and Diamond Ring Set in Platinum
Located in Tokyo, JP
A stunning Engagement Ring featuring a 0.18 Carat Hauynite/Hauyne and 0.57 Carats of Diamond
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Diamond, Other, Platinum

0.08 Carat Hauynite Ring Accented by Paraíba and Diamonds Set in Platinum
Located in Tokyo, JP
A stunning Engagement Ring featuring a 0.08 Carat Hauynite/Hauyne, 0.18 Carats of natural Paraíba
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Diamond, Other, Paraiba, Platinum

GIA Certified 1.19 Carat Paraiba Tourmaline and Diamond Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 1.19 Carat Natural Mozambican (South East Africa
Category

21st Century and Contemporary Japanese Modern Fashion Rings

Materials

Tourmaline, Paraiba, Diamond, Platinum

1.25 Ct. Emerald and Diamond Art Deco Style Engagement Ring in 18K White Gold
Located in Bangkok, TH
An elegant Art Deco-style engagement ring with timeless charm. Features a vivid 1.25 carat oval
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

1.25 Ct. Emerald and Diamond Art Deco Style Engagement Ring in 18K White Gold
Located in Bangkok, TH
An elegant Art Deco-style engagement ring with timeless charm. Features a vivid 1.25 carat oval
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

Yellow Gold Pink Diamond Brown Rose-Cut Diamond Mosaic Pave Ring
By Joke Quick
Located in Antwerp, BE
diamonds and exceptional Unheated Blue Sapphires. 18K Yellow gold 6.3 gram. 16 X Chocolate Pink Brilliant
Category

2010s Belgian Victorian Fashion Rings

Materials

Diamond, White Diamond, Pink Diamond, Brown Diamond, Blue Sapphire, 18k ...

Cartier Retro Romeo and Juliet Jeweled Brooches
By Cartier
Located in New York, NY
oval cabochon emeralds with an approximate total weight of 1.70 carats, 11 old European-cut sapphires
Category

Vintage 1950s Retro Brooches

Materials

Emerald, Pearl, Ruby, Blue Sapphire, 18k Gold

Antique Victorian En Tremblant Diamond Dragonfly Brooch
Located in Santa Barbara, CA
: 111 Carat Weight: 1.00 Carats Total Cut: Rose Accent Gemstones: 12 Blue Sapphires 0.75 carats total 1
Category

Antique Late 19th Century Victorian Brooches

Materials

Diamond, Emerald, Blue Sapphire, Ruby, 14k Gold, Silver

Bespoke Colourful Clip Enhancer Pendant 0.47ct
Located in SYDNEY, NSW
faceted chequerboard cut coloured Gemstones enhanced by 12 channel set baguette cut and 18 claw and pave
Category

21st Century and Contemporary Necklace Enhancers

Materials

Citrine, Diamond, Peridot, Pink Sapphire, Blue Topaz, White Gold

Seaman Schepps Gold, Gem Stone and Pearl Bubble Earrings
By Seaman Schepps
Located in New York, NY
. Designed as a domed cluster of Cabochon rubies, emeralds and sapphires and oval and circular cut sapphires
Category

21st Century and Contemporary American Clip-on Earrings

Materials

Diamond, Emerald, Cultured Pearl, Ruby, Blue Sapphire, Pearl, 18k Gold, ...

Retro 18K Yellow and White Gold 16 Whimsical Charms Bracelet
Located in Beverly Hills, CA
Round Brilliant Topaz, Approx. 0.08 Carats Charm 8: Donkey Center Stone: 2 Blue Cabochon Sapphires
Category

20th Century Charm Bracelets

Materials

Aquamarine, Diamond, Blue Diamond, Kunzite, Morganite, Ruby, Sapphire, T...

Art Deco 1920 Mughal Tutti Frutti Necklace Silver 303.69 Cts Gemstone And Pearls
Located in Miami, FL
and Pailin Blue Sapphires, 4.65 carats. 4 Oval Cabochons cut (average 10 x 15 x 12 mm) of Pink
Category

Vintage 1920s English Art Deco Beaded Necklaces

Materials

Onyx, Pearl, Blue Sapphire, Tourmaline, Fluorite, Gold, 18k Gold, Yellow...

1.02 Ct. Emerald Diamond Art Deco Style Engagement Ring in 18K White Gold
Located in Bangkok, TH
An impressive antique Art Deco inspired 1.45 carat oval blue sapphire with diamond accent. The ring
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Oval Sapphire Eternity Ring 12 Carats
By Belfiore Jewelry
Located in Great Neck, NY
This stunning eternity band is made of 18 perfectly matched oval stones. The superb quality of this
Category

2010s Thai Modern Cocktail Rings

Materials

Blue Sapphire, 18k Gold

1.00 Carat Blue Oval Sapphire Diamond Gold Engagement Ring
Located in Stamford, CT
Blue oval Sapphire and round diamond engagement ring in a 18k white gold setting 1 oval bright
Category

Late 20th Century Engagement Rings

Materials

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

New 7.60 Carat Oval Diamond Cut Blue Sapphire Sterling Silver Ring
Located in Eagan, MN
center stone sapphire that is 7.60 carats. It measures 12 x 10 mm. It is surrounded by brilliant
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

Oval Blue Sapphire and Diamond 18 Carat Gold Cluster Engagement Ring
Located in London, GB
blue oval sapphire in the centre weighing approximately 2.50 carats mounted in a 12 claw, open back
Category

Vintage 1970s English Romantic Cluster Rings

Materials

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

New African 5.20 Carat Oval Diamond Cut Blue Sapphire Sterling Ring Size 7
Located in Eagan, MN
stone is 5.20 carats and measures 12.x 9.8 mm. It is surrounded by diamond cut blue sapphire stones and
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

13 Carat Blue Sapphire Oval Cabochon Gold Full Cut Round Diamonds Cocktail Ring
By Tutti Frutti Jewellery
Located in Bangkok, TH
13 Carats Blue Sapphire oval cab ( 13,4 mm. x 11,3 mm.) set with 3,5 grams of 14 kt white gold, 12
Category

1990s Italian Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, 14k Gold, Gold

13 Carat Blue Sapphire Oval Cabochon Gold Full Cut Round Diamonds Cocktail Ring
By Tutti Frutti Jewellery
Located in Bangkok, TH
13 Carats Blue Sapphire oval cab ( 13,4 mm. x 11,3 mm.) set with 3,5 grams of 14 kt white gold, 12
Category

1990s Italian Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold

13 Carat Blue Sapphire Oval Cabochon Gold Full Cut Round Diamonds Cocktail Ring
By Tutti Frutti Jewellery
Located in Bangkok, TH
13 Carats Blue Sapphire oval cab ( 13,4 mm. x 11,3 mm.) set with 3,5 grams of 14 kt white gold, 12
Category

1990s Italian Contemporary Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold

New 7.15 Carat Blue Sapphire Diamond Cut Blue Sapphire Sterling Silver Ring
Located in Eagan, MN
The stone is from Sri Lanka and is just beautifully cut and exquisite. It is a blue sapphire and is
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Sterling Silver, Silver

PGS Certified 4.05 Carat Oval Blue Sapphire Diamond Cocktail Ring In 14K Gold
Located in Chicago, IL
This is a PGS certified attractive royal blue sapphire weighing 4.05 carats, prong set in the
Category

2010s American Contemporary Cocktail Rings

Materials

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

18K Gold 1.40ct Oval Deep Blue Thai Sapphire Fine Stud Earrings
Located in เกาะสมุย, TH
: Natural, deep blue, oval cut, heat-treatment, 1.40 carats Sapphire Measurements approx.: 6.1 x 4.2 mm
Category

20th Century Thai Stud Earrings

Materials

Blue Sapphire, Sapphire, 18k Gold

1.44 Carat Oval Cab Ethiopian Opal Blue Sapphire and Diamond 10K White Gold Ring
Located in New York, NY
Carat, Round cut Blue Sapphire (12 pcs) 0.27 carat, along with Natural Round cut white Diamond (12 Pcs
Category

20th Century Chinese Art Deco Engagement Rings

Materials

Diamond, Opal, Blue Sapphire, 10k Gold, White Gold

1.44 Carat Oval Cab Ethiopian Opal Blue Sapphire and Diamond 10K White Gold Ring
Located in New York, NY
Carat, Round cut Blue Sapphire (12 pcs) 0.27 carat, along with Natural Round cut white Diamond (12 Pcs
Category

20th Century Chinese Art Deco Engagement Rings

Materials

Diamond, Opal, Blue Sapphire, 10k Gold, White Gold

New 6.95 Carat Blue Sapphire Diamond Cut Sapphire Sterling Ring
Located in Eagan, MN
The stone is from Sri Lanka and is just exquisite. The stone is a Blue Sapphire and is 6.95 cts. It
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Blue Sapphire, Silver, Sterling Silver

New 5.90 Carat Royal Blue Sapphire Diamond Cut Sapphire Sterling Necklace
Located in Eagan, MN
oval stone measures 12 x 10 mm and they are surrounded by diamond cut Royal Blue Sapphire stones. The
Category

2010s Unknown Art Deco Lever-Back Earrings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

New 7.75 Carat Blue Sapphire Diamond Cut Sapphire Sterling Ring
Located in Eagan, MN
The stone is from Sri Lanka and is just exquisite. The stone is a Deep Blue Sapphire and is 7.75
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Blue Sapphire, Silver, Sterling Silver

New 7.02 Carat Blue Sapphire Baguette Cut White Sapphire Sterling Ring
Located in Eagan, MN
. It is an oval cut stone and measures 12 x 10 mm and has beautiful baguette cut White Sapphires
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

Gold vintage ring with oval 1.40ct blue sapphire and diamonds
Located in Chorzów, PL
Classic gold ring with an oval blue-green sapphire and an impressive weight of 1.40 ct
Category

Vintage 1970s Unknown Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 18k Gold

New 11.4 Carat Light Blue Aqua Blue Sapphire Sterling Pendant Necklace
Located in Eagan, MN
very high quality stones. They are fancy oval cut stones and total 11.4 Cts The center stone is 12 x
Category

2010s Unknown Art Deco Pendant Necklaces

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

New 2.4 Carat Blue Kyanite and Diamond Cut Blue Sapphire Earrings
Located in Eagan, MN
cut Blue Sapphires. The color combination is just gorgeous. The earrings measure 14 x 12 mm. The
Category

2010s Unknown Art Deco Stud Earrings

Materials

Sapphire, Blue Sapphire, Kyanite, Silver, Sterling Silver

1980s 1 Carat Blue Sapphire and Diamond Platinum Ring
Located in Hicksville, NY
1980s Diamond and Sapphire Ring - Platinum, Blue Sapphire, Diamonds Features: 1.0 carat Oval cut
Category

Late 20th Century Unknown Modern Band Rings

Materials

Diamond, Blue Sapphire, Platinum

GIA Certified 1.69 Carat Blue Sapphire Diamond Yellow Gold Engagement Ring
Located in Stamford, CT
Royal blue 1.69 carat oval sapphire and diamond engagement ring. GIA Certified natural no heat no
Category

21st Century and Contemporary Engagement Rings

Materials

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

New 6.75 Carat Blue Sapphire Diamond Cut Sapphire Sterling Silver Ring Sz 7.75
Located in Eagan, MN
. It is a fancy oval cut stone and measures 12 x 9.8 mm and is flanked by 2 rows diamond cut Red, Blue
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Green Sapphire, Silver, Sterling Silver

New 9.70 Carat Blue Sapphire 925 Sterling Sterling Earrings - Post
Located in Eagan, MN
stones and are 4.85 carats each totaling 9.70 carats. They are very high quality stones. They measure 12
Category

2010s Unknown Art Deco Stud Earrings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

12 Karat Emerald Cut Brazilian Aquamarine Oval Sapphire Cocktail Ring
By Berca Atelier
Located in Valenza, IT
, 16.5x11.9mm) in a Chic yet Timeless two 1.09 CaratNatural Ceylon Oval Blue Sapphire 18Kt White Gold Cocktail
Category

21st Century and Contemporary Italian Contemporary Engagement Rings

Materials

Aquamarine, Sapphire, 18k Gold, White Gold

New African If 6.20 C1 Carat Deep Blue Royal Blue Sapphire Sterling Ring
Located in Eagan, MN
oval cut and is 6.20 Cts. The main stone is 12 x 10 mm. The stone is surrounded by diamond cut
Category

2010s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Blue Sapphire, Silver, Sterling Silver

New Platinum 8.27ctw GIA Ceylon No Heat Oval Blue Sapphire Diamond Halo Ring
Located in Montclair, NJ
crafted in solid platinum and features a stunning center sapphire. The NO HEAT Ceylon blue sapphire is
Category

2010s American Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

GIA Certified 3.00 Carat Oval Star Sapphire Diamond Gold Halo Engagement Ring
Located in Stamford, CT
gold 1 oval light blue cabochon Star Sapphire, approx. total weight 3.00cts, no heat, 9.75 x 8.09 x
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Star Sapphire, Gold, 14...

18 Karat Gold Cocktail Ring with 12 Carat Sapphires, and Paraiba Tourmalines
By Polya Medvedeva Jewellery
Located in Berlin, DE
encrusted with: rose and green sapphires, Paraiba tourmalines, spinel, 12 carats in total. The work is
Category

2010s German Contemporary Cocktail Rings

Materials

Garnet, Sapphire, Blue Sapphire, Green Sapphire, Spinel, Tourmaline, Par...

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12 Carat Oval Blue Sapphire For Sale on 1stDibs

You are likely to find exactly the 12 carat oval blue 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. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect 12 carat oval blue 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. For this particular piece, 1.5 Carat and 2 Carat are consistently popular carat weights. Finding an appealing 12 carat oval blue sapphire — no matter the origin — is easy, but Polya Medvedeva Jewellery, Alberto and Antinori Fine Jewels each produced a popular version that is worth a look. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes marquise cut alternatives. If you’re browsing our inventory for a 12 carat oval blue 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 12 Carat Oval Blue Sapphire?

The price for a 12 carat oval blue sapphire starts at $642 and tops out at $360,000 with these rings, on average, selling for $14,595.

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.