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3 Carat Royal Blue Sapphire

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1 Carat Sapphire and Diamond Ring in 18 Karat Yellow Gold
Located in Hicksville, NY
Diamonds set between carat Royal Blue Sapphires in 18 Karat Yellow Gold. The ring has 3 rows of Sapphires
Category

1990s Unknown Modern Fashion Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

3.76 Carat Sapphire, White Gold and Diamond Clip-On Earrings
Located in New York, NY
. Sapphires: deep vivid royal blue, good color concentration, slightly included, whitish cloud slightly
Category

Early 20th Century Italian Contemporary Clip-on Earrings

Materials

Diamond, Sapphire, White Gold

Aquamarine Blue Sapphire Diamond Art Deco Style Dome Ring in 18K White Gold
Located in Bangkok, TH
: 5 mm. Number: 1 Weight: 1.10 Carat (approx.) Accent Gemstones Type: Blue Sapphire Shape: French
Category

21st Century and Contemporary Thai Art Deco Dome Rings

Materials

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

Kurt Wayne 18k Gold 3.12ct AGL Emerald Cut Blue Sapphire Round Diamond Ring
By Kurt Wayne
Located in Montclair, NJ
cut sapphire has an amazingly rich royal blue color, is perfectly prong set at the center of the ring
Category

Early 2000s American Solitaire Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

New 18K Gold 1.39ct GIA Emerald Cut Ceylon Sapphire Diamond 3 Three Stone Ring
Located in Montclair, NJ
diamond. The sapphire displays the most desirable and richest royal blue color which is then elegantly
Category

2010s American Engagement Rings

Materials

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

Ceylon Oval Shape Blue Sapphire Diamond Halo Antique Style 18K Gold Earrings
By Unbranded
Located in Oakton, VA
blue Ceylon sapphires enshrined in halos of old cut round diamonds. Total diamond weight 0.91 carat
Category

21st Century and Contemporary Art Deco Drop Earrings

Materials

Diamond, Sapphire, Yellow Gold

1990s 2.40 Carat Sapphire and Diamond Ring in 18 Karat Yellow Gold
Located in Hicksville, NY
Weight: 8.8 grams Sapphire Details: Carat: 2.40 carat total weight Cut: Princess Color: Rich Royal Blue
Category

1990s Unknown Modern More Jewelry

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Art Deco Sapphire Diamond White Gold Engagement Ring
Located in Chicago, IL
royal blue sapphire (approximately 0.67 ct) framed by bright white old European cut diamonds (G-H color
Category

Vintage 1920s Art Deco Engagement Rings

Materials

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

Nina Zhou Butterfly 5.80ctw Sapphire Earrings
By Nina Zhou
Located in Rowland Heights, CA
Yellow Gold Natural Sapphire|Royal Blue| Eye Clean Sapphire CTW: 5.80 Measurements: 1 '' length|3/4
Category

21st Century and Contemporary American Modern Stud Earrings

Materials

Sapphire, 14k Gold

9.5 Carat Total Sri Lanka Sapphire And Diamond Flower Bracelet In 18k White Gold
Located in Houston, TX
retro touch, this stunning bracelet features 13 vivid royal blue sapphires from Sri Lanka, totaling
Category

2010s Art Deco Link Bracelets

Materials

Diamond, Sapphire, White Gold

0.75ct Natural Oval Sapphire Diamond Double Halo Engagement Ring in 18K Gold
Located in Jaipur, RJ
0.75-carat natural oval-cut blue sapphire, radiating a deep oceanic hue that symbolizes wisdom, loyalty
Category

2010s Indian Art Deco Engagement Rings

Materials

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

Bonebakker Dutch Royal Crown Band Ring 18 Karat Gold with Gemstones
By Bonebakker
Located in Amsterdam, NL
carat royal crown ring with a jeweled gold band has been created. The oval ruby, 3 princess cut
Category

21st Century and Contemporary Dutch Classical Roman Band Rings

Materials

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

Art Deco Sapphire Diamond Chandelier Earrings, 18 Karat White Gold
Located in Beverly Hills, CA
Art Deco sapphire and diamond chandelier earrings in 18k white gold. Featuring 10 carats of royal
Category

20th Century Unknown Art Deco Chandelier Earrings

Materials

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

Nina Zhou 2.70ctw Natural Sapphire Branch Leaves Ring
By Nina Zhou
Located in Rowland Heights, CA
Sapphire|Pear|Royal Blue Sapphire CTW: 2.70 Beautiful Packaging & Safe Shipping: Every piece of jewelry
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Sapphire, 14k Gold

Art Nouveau 14k Sapphire Diamond Flush Mount Ring
Located in Narberth, PA
dark royal blue hue. The sapphire is nestled between two old mine cut diamonds, which have an
Category

1990s Art Nouveau Engagement Rings

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold

Nina Zhou Rhythm 2.45ctw Sapphire Diamond Drop Earrings in 14k Gold
By Nina Zhou
Located in Rowland Heights, CA
Gold 8 Pieces 3 x 5 mm Natural Sapphire|Royal Blue|Pear Sapphire CTW: 2.40 Natural Diamond Grade: G
Category

21st Century and Contemporary American Modern Drop Earrings

Materials

Diamond, Sapphire, Yellow Gold, 14k Gold

Platinum Sapphire and Diamond Buckle Ring
Located in Hummelstown, PA
Masterfully hand crafted in platinum, this stylized buckle ring boasts a 3.82 carat royal blue
Category

Vintage 1940s Unknown Retro Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Suzy Levian 14 Karat Rose Gold Round Kancha Sapphire and Diamond Ring
By Suzy Levian
Located in Great Neck, NY
own internal royal beauty. Jewelry Type: Fine Stone Shape: Round Band Width: 2-3 mm, 3-4 mm Number
Category

21st Century and Contemporary Hong Kong Contemporary Cocktail Rings

Materials

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

Antique Sapphire Diamond Gold Horseshoe Stick Pin
Located in Chicago, IL
with excellent royal blue old mine cut sapphires and antique cushion cut diamonds. Estimated total
Category

Antique Late 19th Century Victorian Brooches

Materials

Diamond, Sapphire, Gold

Nina Zhou 2.45ctw Sapphire Diamond and Baroque Pearl Convertible Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
from ease to opulence. 14K Solid Gold 8 Pieces 3 x 5 mm Natural Sapphire|Royal Blue|Pear|SI Sapphire
Category

21st Century and Contemporary American Modern Drop Earrings

Materials

Diamond, Pearl, Sapphire, 14k Gold, Yellow Gold

Nina Zhou 2.45ctw Sapphire Diamond and Pearl Convertible Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
Yellow Gold 8 Pieces 3 x 5 mm Natural Sapphire|Royal Blue|Pear Sapphire CTW: 2.40 Natural Diamond Grade
Category

21st Century and Contemporary American Modern Drop Earrings

Materials

Diamond, Pearl, Sapphire, Freshwater Pearl, Yellow Gold, 14k Gold

Nina Zhou 5.85 ctw Moonstone Sapphire Diamond Chandelier Drop Earrings
By Nina Zhou
Located in Rowland Heights, CA
|Eye Clean Moonstone CTW: 5.10 Natural Sapphire|Royal Blue|Pear|Eye Clean Sapphire CTW: 0.60 Natural
Category

21st Century and Contemporary American Modern Chandelier Earrings

Materials

Sapphire, Diamond, Moonstone, 14k Gold, Yellow Gold

Ruby Sapphire Diamond Gold Floral Ring
Located in Beverly Hills, CA
red gem rubies and 3 equally as beautiful vivid royal blue sapphires. They weigh a total of 1.62
Category

21st Century and Contemporary North American Fashion Rings

Materials

Diamond, Ruby, Sapphire, Gold, 18k Gold

Platinum 950 Natural Diamond and Natural Sapphire Milgrain Ring
Located in New York, NY
Weight: 1.79 Carat (16 Pcs) Sapphire Stone Color: Royal Blue Sapphire Stone Cut: Cabochon Sapphire Stone
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Platinum 950 Natural Diamond and Natural Sapphire Milgrain Ring
Located in New York, NY
Sapphire Sapphire Carat Weight: 1.42 Carat (32 Pcs) Sapphire Stone Color: Royal Blue Sapphire Stone Cut
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Black Starr Frost 1925 Art Deco Platinum Ring And 3.55 Ctw Sapphires Diamond
Located in Miami, FL
natural vivid blue sapphires from the Pailin mines, with an estimate total weight of 2.85 carats
Category

Vintage 1920s American Art Deco Cluster Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

5.00ct Sapphire 34.00ct Diamond 18K White Gold Riviera Necklace
Located in New York, NY
elegance. The centerpiece features a deep royal blue sapphire (GIA certified, Oval Shape, 5.00 carats
Category

20th Century Pendant Necklaces

Materials

Diamond, Sapphire, 18k Gold, White Gold

18K 750 Solid White Gold Natural Diamond Sapphire and Opal Ring
Located in New York, NY
Stone Cut: Fancy Cut Sapphire Stone Color: Royal Blue Sapphire Clarity Grade: VS Clean Top Quality 3
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

Platinum 1.66ctw Bezel Square Step Cut Sapphire Diamond Wavy Band Ring
Located in Montclair, NJ
–Stone(s): – (3) Natural Genuine Sapphire - Square Step Cut - Bezel Set - Royal Blue Color
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Sapphire, Platinum

Kai 7.20ct Aquamarine Sapphire Cluster Cocktail Ring Customization
Located in Rowland Heights, CA
Aquamarine|Sky Blue|Oval|Eye Clean Aquamarine CTW: 1.50 10 Pieces 2 mm Sapphire|Royal-Blue|Round|Eye Clean
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Aquamarine, Sapphire, Tsavorite, 14k Gold

Edwardian 4.98 CTW No Heat Sapphire Diamond Platinum Antique Pendant Necklace
Located in Philadelphia, PA
Weighing approximately 3.81 carats total - natural no-heat Color-change from royal blue to violet under
Category

Vintage 1910s Edwardian Pendant Necklaces

Materials

Diamond, Sapphire, Platinum

Art Deco Sapphire and Diamond Cluster Platinum Engagement Ring
Located in London, GB
set to its centre with a royal blue emerald cut sapphire with a classic diamond cluster to its top and
Category

Vintage 1930s Unknown Retro Cluster Rings

Materials

Diamond, Sapphire, Platinum

Contemporary 18K Invisibly Set Ruby Sapphire Double Flower Diamond Ring Sz 6.75
Located in Winter Springs, FL
, vivid red, calibrated, invisibly set • Sapphires: Approx. 0.70 carat total weight, royal blue
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Art Deco 1.35 CTW Sapphire Diamond Platinum Vintage Scrolling Cluster Ring GIA
Located in Philadelphia, PA
Centering an emerald cut sapphire weighing approximately 0.85 carat Transparent deeply saturated
Category

Vintage 1930s Art Deco Cluster Rings

Materials

Diamond, Sapphire, Platinum

18k Yellow Gold 1ctw Alternating Square Step Channel Sapphire Diamond Band Ring
Located in Montclair, NJ
--Stone(s):-- (4) Natural Genuine Sapphire - Square Step Cut - Channel Set - Rich Royal Blue Color
Category

21st Century and Contemporary Band Rings

Materials

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

Tutti Frutti Ruby Emerald Sapphire Diamond Gold Cocktail Ring
Located in Beverly Hills, CA
A bright colorful tutti frutti ring featuring 5 bright vivid red rubies, 3 royal blue sapphires
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Emerald, Ruby, Sapphire, Gold, 18k Gold, Yellow Gold, Enamel

Diamond and Sapphire Art Deco Style Dinner Ring in 14K White Gold
Located in Bangkok, TH
: 2.5 mm. Number: 5 Weight: 0.35 Carat (approx. total weight) Accent Gemstones Type: Blue Sapphire
Category

21st Century and Contemporary Thai Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Art Deco Sapphire Ring .50ct Natural Round Solitaire Original 1920s Antique 18K
Located in Dearborn, MI
Gold Featuring a Gorgeous .50ct Genuine Natural Royal Blue Round Sapphire Perfect Alternative
Category

Vintage 1920s Art Deco Solitaire Rings

Materials

Sapphire, 18k Gold, White Gold

Aquamarine Sapphire and Diamond Art Deco Style Engagement Ring in 18K White Gold
Located in Bangkok, TH
-cut sapphire, adding a royal touch of deep blue contrast. This harmonious blend of gemstones captures
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

Antique Art Deco Platinum GIA Round Diamond Sapphire Infinity Leaf Link Bracelet
Located in Montclair, NJ
royal blue sapphires. The center diamond weighs exactly 1.14 carats and is certified to be K in color
Category

Vintage 1920s Art Deco Tennis Bracelets

Materials

Diamond, Sapphire, Platinum

Ceylon Sapphire Emerald and Diamond Art Deco Style Engagement Ring in 18K Gold
Located in Bangkok, TH
Engagement Ring. At its heart lies a vivid cushion shape Ceylon sapphire, renowned for its rich royal blue
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

Vintage 14k Yellow Gold GIA Marquise Oval Sapphire Diamond Scroll Work Band Ring
Located in Montclair, NJ
MUST SEE IN PERSON - INCREDIBLE SAPPHIRES! --Stone(s):-- (5) Natural Genuine Sapphire - 3 Marquise
Category

20th Century Band Rings

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold

1 8 K White Gold drop Earrings with Heart Shape Sapphires Diamonds
Located in Zurich, Zollstrasse
drop earrings. Displaying the vivid "royal blue" hue for which the gems are so coveted. 42 glittering
Category

Vintage 1980s Unknown Contemporary Drop Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

French Cut Sapphire and Diamond Art Deco Style Ring in 14K Yellow Gold
Located in Bangkok, TH
weight) Size: US 3 - 8 available Center Gemstones Type: Blue Sapphire Shape: French Cut Number: 6
Category

21st Century and Contemporary Thai Art Deco Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Antique Art Deco 18k Gold 3.20ctw GIA Sapphire European Diamond Three Stone Ring
Located in Montclair, NJ
sapphire stone. The sapphire displays the richest and most attractive royal blue color, it is further
Category

Vintage 1920s Art Deco Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Antique Art Deco 18k Gold 1.13ctw European Diamond Sapphire Etched Dinner Ring
Located in Montclair, NJ
- Channel Set - Royal Blue Color Total Carat Weight: 1.13 (approx.) Material: Solid 18k White Gold Weight
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

Antique Art Deco 14k Gold Platinum 0.81c Diamond Sapphire Open Filigree Bracelet
Located in Montclair, NJ
- 0.36ctw (approx.) (4) Synthetic Sapphires - Kite Faceted Cut - Milgrain Bezel Set - Royal Blue Color
Category

Vintage 1920s Art Deco Link Bracelets

Materials

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

Antique Arts Crafts 12k Gold GIA Sapphire Ruby Emerald Swirl Leaf Brooch Pin
Located in Montclair, NJ
sapphires total approximately 1.20 carats in weight and display a rich and deep royal blue color. The rubies
Category

Vintage 1910s Arts and Crafts Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, Gold

Circa 1990 s Le Vian Sapphire and Diamond Ring Set in 18 Karat Yellow Gold
By Le Vian
Located in Addison, TX
of ring Center Gem Details: Type: Sapphire Shape: Oval Carat Weight: 1.00CT Color: Royal Blue
Category

1990s Retro Fashion Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

"Pearl Royale Chess Set" 14K White Gold Diamonds Ed. of 3 by Colin Burn
By Colin Burn
Located in Culver City, CA
Logan Blue Sapphire, the 563 carat Star of India, and the 478 carat Queen Marie of Romania’s Sapphire
Category

21st Century and Contemporary Contemporary Still-life Sculptures

Materials

Platinum

"Pearl Royale" Platinum Sculpture 9 x 2 in Edition of 3 by Colin Burn
By Colin Burn
Located in Culver City, CA
pure platinum its pave’ and channel set with over 70 carats of flawless white diamonds, royal blue
Category

21st Century and Contemporary Contemporary Still-life Sculptures

Materials

Platinum

18K Ruby Diamond Ring Vintage Unheated GIA Certified VS Fine Huge 15.53 Carats!
Located in Sylvania, GA
. 3.84 Carats Size: HUGE almost 1 inch North to South by Over 3/4 inches wide (23 mm X 21 mm) Heavy
Category

20th Century Cocktail Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold

Platinum Diamond Antique Earrings Vintage GIA Certified Fine VS Huge 9.44 Carats
Located in Sylvania, GA
with Royal Blue Velvet Plush & Ivory Silk Interior. Very Classy...These Will Take You Anywhere
Category

20th Century Chandelier Earrings

Materials

Diamond, White Gold, Platinum, 14k Gold

GIA Tahitian Pearl 18K Emerald Diamond Vintage Necklace Strand Fine Huge 11.5 MM
Located in Sylvania, GA
! PERFECT with that Little Black Dress or Blue Jeans! Still Perfectly Kept in Royal Blue Velvet Mikimoto
Category

20th Century Beaded Necklaces

Materials

Diamond, Pearl, Emerald, 18k Gold, White Gold

Edwardian Sapphire Diamond and Pearl Pendant
Located in London, GB
carats that has a gorgeous hue. Surrounding the sapphire is a frame of glittering diamonds, and around
Category

Antique Early 1900s French Edwardian Pendant Necklaces

Materials

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

Pair of Tutti-Frutti Clip Earrings
Located in London, GB
gold with gold clip fittings, the emeralds estimated to weigh 3 carats in total, the sapphires
Category

Vintage 1950s Unknown Clip-on Earrings

Materials

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

GIA Sapphire Diamond Certified 18K No Heat Ceylon Blue Fine Huge Ring 12.04 Cts!
Located in Sylvania, GA
UNHEATED SAPPHIRE DIAMOND ANTIQUE RING & BOX! HUGE 9.52 CARAT BRILLIANT ROYAL BLUE GIA CERTIFIED RARE NO
Category

Antique 19th Century Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 18k Gold

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3 Carat Royal Blue Sapphire For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 3 carat royal blue sapphire for your needs in our varied inventory. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. Find an antique version now, or shop for 52 vintage or 178 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a 3 carat royal blue sapphire may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. A 3 carat royal blue sapphire from Antinori Fine Jewels, Emilio! and Polya Medvedeva Jewellery — 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 round cut cut versions available here, too. When shopping for a 3 carat royal blue sapphire, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 3 Carat Royal Blue Sapphire?

The price for a 3 carat royal blue sapphire starts at $550 and tops out at $2,000,000 with these rings, on average, selling for $17,000.

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 rings, vintage engagement rings or Art Deco engagement rings.)  

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