Skip to main content

Invisible Set Ruby Jewelry

to
19
192
157
58
55
24
214
187
27
9
5
100
121
3
1
1
5
1
15
19
145
77
4
41
34
27
14
11
to
11
7
4
4
3
30
29
24
3
1
222
4
188
10
Sort By
Invisible Set Ruby and Diamond Drop Earrings
By Manfredi
Located in Greenwich, CT
. 72.90 carats of deep red princess cut rubies expertly set by a master craftsman in an invisible type of
Category

21st Century and Contemporary American Artist Drop Earrings

Materials

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

Invisibly Set Ruby and Diamond Earrings, 18k
Located in New York, NY
A pair of Invisibly Set Ruby and Diamond Earrings made in 18k Yellow Gold. There are appx. 6.80 cts
Category

20th Century Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold

Invisible Set Ruby and Diamond Heart Earrings
Located in New York, NY
Finely crafted in 18K yellow gold featuring invisible set rubies weighing a total of 8.00 carats
Category

Early 2000s Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Gorgeous Invisible Set Ruby Diamond Platinum Gold Butterfly Brooch
Located in New York, NY
Beautiful and intricate butterfly brooch, set in platinum and 18k gold, featuring invisible set
Category

20th Century Brooches

Materials

Diamond, Ruby, Gold, Platinum

Invisibly-Set Ruby Diamond Lotus Flower Earrings
Located in Palm Beach, FL
Invisibly-set ruby and diamond lotus flower earrings, designed with five calibre-cut ruby-set
Category

2010s Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

White Gold, Invisibly-Set Ruby and Diamond Flower Brooch
Located in New York, NY
A White Gold, Invisibly-Set Ruby and Diamond Flower Brooch 18 kt., the petals of square, ruby and
Category

Vintage 1980s American Brooches

Materials

Diamond, Ruby, 18k Gold

White Gold Invisible Set Ruby Cluster Earrings
Located in Coral Gables, FL
18 Karat White Gold Huggie Earrings Featuring 50 Invisible Set Rubies Totaling Approximately 2.00
Category

Late 20th Century Clip-on Earrings

Materials

Ruby, 18k Gold, White Gold

Sabbadini Invisible set Gold Ruby and Diamond Flower Brooch
By Sabbadini
Located in Chicago, IL
set with very Fine Bright Gem color Burma Rubies totaling approximately 30 Carats and further set with
Category

1990s Italian Brooches

Materials

Diamond, Ruby, 18k Gold

Invisibly Set French Cut Ruby Gold Band Ring
Located in Aspen, CO
39 fine fancy cut French cut invisibly set natural vivid red rubies create a wonderful statement
Category

20th Century Unknown Contemporary More Rings

Materials

Ruby, 18k Gold

1980s Invisibly Set Sapphire Ruby Gold Ear Pendants
Located in New York, NY
A pair of impressive invisible set sapphires and ruby ear pendants, circa 1980. Mounted on 18kt
Category

Vintage 1980s Italian Drop Earrings

Materials

Blue Sapphire, Ruby, 18k Gold

Sabbadini Invisible Set Ruby Diamond Emerald Gold Bee Brooch
By Sabbadini
Located in New York, NY
Adorable 18k yellow gold bee brooch, by Italian designer Sabbadini. Featuring invisible set rubies
Category

20th Century Italian Brooches

Materials

Diamond, Emerald, Ruby, Gold

French Midcentury Invisible Set Ruby Diamond Platinum Earrings
Located in New York, NY
Pair of French made Mid century platinum earrings, with invisible set rubies, and approx. 2.20ctw
Category

Mid-20th Century French More Earrings

Materials

Diamond, Ruby, Platinum

1980s Invisibly Set Ruby Diamond Gold cocktail Ring
Located in Bay Harbor Islands, FL
Italian made ruby and diamond ring set with a round diamond weighing 4.00 carats, and 106
Category

Vintage 1980s Italian Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

18 Karat Gold Ruby Invisibly Set Bombe Ring
Located in London, England
A truly amazing invisibly set ruby bombe 18ct white gold ring. Individually the square shaped
Category

2010s American Art Deco Fashion Rings

Materials

Ruby, 18k Gold, White Gold

18 Karat Gold Ruby Invisibly Set Bombe Ring
Located in London, England
A truly amazing invisibly set ruby bombe 18ct white gold ring. Individually the square shaped
Category

2010s American Art Deco Fashion Rings

Materials

Ruby, 18k Gold, White Gold

21 Carat Invisible Set Ruby Diamond Gold Bracelet
Located in Beverly Hills, CA
is the invisibly set rubies. To invisibly set each stone is a very tedious process and is a sign of a
Category

Vintage 1980s Unknown Modern Retro Bracelets

Materials

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

Invisibly-Set Ruby 18k White Gold Line Bracelet
Located in Palm Beach, FL
invisibly-set in 18k white gold. 272 rubies weighing 47.56 total carats. Beautifully articulated design of
Category

2010s Unknown Modern Modern Bracelets

Materials

Diamond, Ruby, 18k Gold, White Gold

14kt Invisible Set Ruby and Diamond Halo Earrings
Located in Towson, MD
14kt yellow gold earrings with approximately .32 carats of invisibly set rubies and approximately
Category

Early 2000s Stud Earrings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Diamond and Invisible Set Ruby Yellow Gold Ring
Located in Southampton, PA
Given a distinct regal look by the combination of striking rubies and scintillating diamonds, this
Category

Late 20th Century Unknown Dome Rings

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

Alexis 38.75 Carat Invisible Set Ruby Diamond Gold Feather Brooch
Located in New York, NY
Exquisite 18k white gold feather brooch by Alexis, set with 38.75 carats in vibrant invisible set
Category

21st Century and Contemporary Brooches

Materials

Diamond, Ruby, Gold

18K and Invisibly Set Natural Fancy Cut Ruby Ring
Located in Aspen, CO
18K gold ring with fine vivid red Rubies. The natural rubies all invisibly set and faceted on the
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Ruby, Gold, 18k Gold

Adler Yellow Gold Diamond and Invisibly Set Ruby Ring
By Adler
Located in Southampton, PA
Paved with fabulous rubies weighing in total 6.01 carats and embellished also with glistening
Category

Late 20th Century American Cocktail Rings

Materials

White Diamond, Ruby, 18k Gold

Diamond Pave and Invisible Set Ruby Yellow Gold Ring
Located in Southampton, PA
The marvelous arrangement of enchanting fancy-cut rubies amounting to 3.05 carats and scintillating
Category

20th Century Unknown Band Rings

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

White Gold and Invisible Set Ruby Leaf Form Earrings
Located in Chicago, IL
Circa 2000 18K White Gold Leaf Form Earrings, invisibly set with Extremely Fine Color Rubies
Category

Early 2000s Swiss Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Invisible-Set Ruby and Diamond Cocktail Ring, 18k Yellow Gold
Located in New York, NY
An Invisible-Set Ruby and Diamond Cocktail Ring made in 18k Yellow Gold. The Ring Size is US 9.75
Category

20th Century Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Invisibly-Set Ruby and Diamond Earclips by Aletto Brothers
By Aletto Brothers
Located in New York, NY
Pair of Platinum, Invisibly-Set Ruby and Diamond Earclips by Aletto Brothers Centering bombé panels
Category

Late 20th Century American Artist Clip-on Earrings

Materials

Diamond, Ruby, Platinum

18 Karat Yellow Gold Diamond and Invisible Set Ruby Earrings
Located in Scottsdale, AZ
Ruby: 32 Princess cut = 4.00cttw Dimensions: earrings are 20.27mm x 11.62mm Fastenings: omega backs
Category

21st Century and Contemporary More Earrings

Materials

Diamond, Ruby, White Gold

Invisible Set Ruby Diamond Butterfly Necklace Vintage 18k Yellow Gold
Located in Torrance, CA
Finely detailed invisible set ruby & diamond butterfly necklace crafted in 18 karat yellow gold
Category

Mid-20th Century Unknown Modern Choker Necklaces

Materials

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

18 Karat Yellow Gold Invisible Set Diamond and Ruby Bracelet
Located in Scottsdale, AZ
Color: G Clarity: VS Ruby: 256 princess cut = 25.60cttw Dimensions: bracelet is 7 inches long and it is
Category

21st Century and Contemporary More Bracelets

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Set in 18K Gold, invisible set Blue Sapphires, Rubies Diamonds Cluster Ring
By JEWEL HUB
Located in Hong Kong, HK
0.70 carats. The Rubies & Blue Sapphires are of Thailand origin and are invisibly set. The Diamonds
Category

21st Century and Contemporary Indian Modern Cluster Rings

Materials

Diamond, Ruby, Blue Sapphire, 18k Gold

Estate 18k Invisible Set Ruby Pave Diamond Bypass Cocktail Ring 7.25cttw
Located in Winter Springs, FL
A beautifully made ring done in 18K yellow gold set with approximately 6cttw in invisibly set
Category

1990s Contemporary Cluster Rings

Materials

Diamond, Ruby, 18k Gold

Mazer Art Deco Faux Ruby Invisibly Set Link Bracelet
By Mazer Bros
Located in New York, NY
Mazer Art Deco faux ruby leaves invisibly set link bracelet of rhodium plated base metal, small
Category

Vintage 1930s American Art Deco Link Bracelets

Materials

Crystal, Rhodium, Base Metal

Teone Diamond Pave and Invisible Set Ruby White Gold Bow Pendant/Brooch
Located in Southampton, PA
and 2.82ct of exquisite rubies that immensely elevate the value of the remarkable piece. Retail Price
Category

20th Century Unknown Brooches

Materials

White Diamond, Ruby, 18k Gold, White Gold

Van Cleef Arpels Diamond Yellow Gold Invisibly Set Ruby Band Ring
By Van Cleef Arpels
Located in Southampton, PA
exquisitely cut rubies lends fabulous color and romantic spirit to this remarkable ring from Van Cleef
Category

Late 20th Century French Cocktail Rings

Materials

White Diamond, Ruby, 18k Gold

Vintage Ruby and Diamond 18k Yellow Gold Invisible Set Dome Ring
Located in Beverly Hills, CA
One Vintage Ruby and Diamond 18k Yellow Gold Invisible Set Dome Ring. Featuring 35 calibré cut
Category

1990s Dome Rings

Materials

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

Van Cleef Arpels Yellow Gold Diamond and Invisible Set Ruby Ring
By Van Cleef Arpels
Located in Southampton, PA
A neat arrangement of exquisitely cut rubies weighing in total 1.20 carats combines fabulously with
Category

Late 20th Century French Band Rings

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

Van Cleef Arpels Yellow Gold Diamond and Invisible Set Ruby Ring
By Van Cleef Arpels
Located in Southampton, PA
A neat arrangement of exquisitely cut rubies weighing in total 1.20 carats combines fabulously with
Category

Late 20th Century French Band Rings

Materials

Ruby, White Diamond, 18k Gold, Yellow Gold

18 Karat Yellow Gold Invisible Set Ruby and Diamond Dome Earrings
Located in Scottsdale, AZ
Designer: custom Material: 18K yellow gold Diamond: 44 round brilliant cut = 2.64cttw Color: G Clarity: SI1 Dimensions: earrings measure 24.60mm in length Fastenings: pierced omega ...
Category

21st Century and Contemporary More Earrings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18 Karat Yellow Gold Invisible Set Ruby and Diamond Heart Ring
Located in Scottsdale, AZ
Designer: custom Material: 18K yellow gold Diamond: 8 princess cut = 0.50cttw Color: H Clarity: SI1 Ring Size: 5.5 (please allow up to 2 additional business days for sizing requests)...
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

3.24 Carat Total Invisible Set Princess Cut Rubies and Diamond Gold Pendant
Located in Chicago, IL
a diagonal row of 0.46 carat total princess cut diamonds. All the stones are invisibly set so you
Category

Early 2000s American Contemporary Pendant Necklaces

Materials

Ruby, 18k Gold

18 Karat Yellow Gold Invisible Set Pigeons Blood Ruby and Diamond Ring
Located in Scottsdale, AZ
: 36 invisible set square faceted cut = 3.24cttw Ruby: 1 pear cut = .52ct Color: Pigeons Blood Clarity
Category

21st Century and Contemporary More Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Invisible Mystery Set Ruby and Diamond Owl Pin or Pendant 18 Karat White Gold
Located in New York, NY
Invisible or Mystery set Princess cut Burma Ruby And Diamond Owl Pin/ Pendant in 18 K White
Category

Early 20th Century Brooches

Materials

Diamond, Ruby, 18k Gold

5.50ct Invisible Set Ruby Diamond Ring Vintage 18k Yellow Gold Cigar Band
Located in Torrance, CA
Stylish vintage invisible set ruby & diamond ring (circa 1980s to 1990s) crafted in 18 karat yellow
Category

Late 20th Century Unknown Modern Band Rings

Materials

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

Diamonds Princess Cut Invisible Set Natural Rubies Ring 14 Karat Yellow Gold
Located in New York, NY
Invisible or Mystery set Princess cut Natural Ruby And Diamond ring in 14 K Yellow Gold
Category

2010s Wedding Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

18 Karat White Gold Diamond Ruby Invisible Small Heart Earring Ring Set
Located in Los Angeles, CA
This ruby sweet heart earring and ring set is crafted in 18-karat white gold, weighing
Category

2010s American Stud Earrings

Materials

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

Van Cleef Arpels Yellow Gold Diamond Pave and Invisible Set Ruby Ring
By Van Cleef Arpels
Located in Southampton, PA
Leading up to the heart of the design where three gorgeous rubies totaling 1.10 carats are neatly
Category

Late 20th Century French Band Rings

Materials

Ruby, White Diamond, 18k Gold, Yellow Gold

18k Gold 1.29ctw Invisible Set Ruby Center w/ Channel Diamond Halo Heart Pendant
Located in Montclair, NJ
):-- (12) Natural Genuine Rubies - Square Calibre Cut - Invisible Set - Vivid Red Color - 0.65ctw (approx
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold

Invisibly-Set Ruby 43.39 Carat and Diamond 1.1 Carat Lily Flower Earrings Gold
Located in London, England
A spectacular pair of invisibly-set ruby and diamond lily flower clip-on earrings in 18-karat
Category

2010s British Contemporary Stud Earrings

Materials

Ruby, Diamond, 18k Gold, Yellow Gold

Invisible Mystery Set Ruby and Diamond Cocktail Earring 18 Karat White Gold
Located in New York, NY
Invisible or Mystery set Princess cut Burma Ruby And Diamond Cocktail Earring in 18 K White
Category

Early 20th Century Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold

Invisible Set 6.90 Carat Ruby and Diamond Concave Dome Ring in Rose Gold
By Roman Malakov
Located in New York, NY
A fashionable piece of jewelry showcasing a cluster of invisible set rubies, accented by round
Category

21st Century and Contemporary American Modern Dome Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Modern Invisible Set Princess Cut Natural Ruby Ring in 18K White Gold ~4ctw
Located in Fairfield, CT
Modern Invisible Set Princess Cut Natural Ruby Ring in 18K White Gold Designed with modern
Category

21st Century and Contemporary Modern Fashion Rings

Materials

Ruby, Gold, 18k Gold, White Gold

Art Deco Style Invisibly Set Princess Cut Ruby Earrings in 18 Karat White Gold
Located in London, England
An elegant pair of invisibly set ruby square earrings set in 18k white gold. Each earring
Category

2010s British Art Deco Stud Earrings

Materials

Ruby, Gold, 18k Gold, White Gold

18 Karat Gold 1.10 Carat Diamond and Invisible Set 1.00 Carat Ruby Band Ring
By Van Cleef Arpels
Located in Southampton, PA
The extravagant appearance produced by the scintillating diamonds and the captivating rubies is
Category

21st Century and Contemporary Band Rings

Materials

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

1980s Vintage 18 Karat Gold Invisible Set Multi-Gem Ice Cream Cone Brooch
Located in Philadelphia, PA
Brooch designed as ice cream cone with a scoop of white mother-of-pearl bezel set with ruby
Category

Vintage 1980s Contemporary Brooches

Materials

Amethyst, Aquamarine, Citrine, Garnet, Iolite, Peridot, Ruby, Blue Sapph...

Invisible Set Ruby Diamond Ring
Located in Miami, FL
weighing approximately 2.40 carats total. The rubies are invisibly set in a rectangular shape, resting
Category

Vintage 1980s Unknown Modern Band Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Trifari Invisibly Set Ruby Flower
By Alfred Philippe for Trifari
Located in New York, NY
Trifari, Alfred Phillipe Invisibly Set Ruby Flower with ruby waffle glass made to resemble the gem
Category

Vintage 1960s Brooches

Materials

Gilt Metal

Invisible Set Ruby and dDamond Earrings
Located in New York, NY
larger and three smaller petals, each invisibly set with square cut rubies with total weight of 69.45ct
Category

21st Century and Contemporary European Artist Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

  • 1
Get Updated with New Arrivals
Save "Invisible Set Ruby Jewelry", and we’ll notify you when there are new listings in this category.

Invisible Set Ruby Jewelry For Sale on 1stDibs

Find the exact piece of invisible set ruby jewelry you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 18k Gold and Yellow Gold, this item was constructed with great care. You can easily find a 86 antique edition and 51 modern creations to choose from as well. If you’re looking for an item from our selection of invisible set ruby jewelry from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 20th Century while another version may have been produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but 3.5 Carat and 4 Carat versions are of considerable interest. Finding an appealing choice in our collection of invisible set ruby jewelry — no matter the origin — is easy, but Aletto Brothers, Van Cleef Arpels and Sabbadini each produced a popular version that is worth a look. See these pages for a round cut iteration of this accessory, while there are also princess cut cut and square cut cut versions available here, too. If you’re browsing our inventory for an object in our assortment of invisible set ruby jewelry, 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 Invisible Set Ruby Jewelry?

The price for a piece of invisible set ruby jewelry starts at $945 and tops out at $225,000 with these rings, on average, selling for $8,300.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Ruby in Jewelry Design

This deep red gem is the color of heat and passion — vintage and antique ruby jewelry is perfect for those born in the middle of summer.

Rubies are one of the few gemstones that can give diamonds a run for their money. Just consider the Van Cleef Arpels “scarf” necklace the Duke of Windsor presented to the Duchess on her 40th birthday, in 1936 — set with diamonds and dripping with rubies, a testament to the deep-red gemstone’s power — or the slippers encrusted with 4,600 rubies that Harry Winston made to commemorate The Wizard of Oz’s golden anniversary. July babies have permission to adorn themselves with this beautiful red stone even when it’s not their birthday.

Rubies are considered precious stones — along with diamonds, sapphires and emeralds — and have a hardness of 9.0 on the Mohs Scale, surpassed only by Moissanite and diamonds. They are composed of corundum, a colorless mineral that is also the basic material of sapphires. In the July birthstone, the red of the gemstone — and the various hues seen in sapphires — are produced by the presence of trace elements. In the case of a ruby, this element is chromium. Rubies range in color from vermilion to a violet red. They are also pleochroic, which means that a stone’s hue can vary depending on the direction of viewing. The most sought-after color is pigeon’s blood: pure red with a hint of blue.

Rubies that are hosted in dolomite marble are the most prized: Because the marble is low in iron, so are the rubies, resulting in a more intense color. Rubies found in basalt, which has a higher iron content, are generally darker and less intense.

When shopping for antique and vintage ruby jewelry, remember that the 4Cs of selecting the perfect diamond — color, clarity, cut and carat — also apply to rubies.

According to the Gemological Institute of America, the color of the July birthstone should be a vibrant to slightly purplish red, and the stone should be clear and inclusion-free. Accordingly, the cut should show off its color and clarity. As for the last criterion, fine rubies more than a carat in weight are rare. Often, large rubies are more expensive than diamonds of comparable weights.

Find a collection of ruby necklaces, ruby rings and other accessories on 1stDibs.