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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

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

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

Invisibly Set Ruby Diamond Earrings
Located in New York, NY
Brilliant Rubies Invisibly Set with over 24 Carats Encircle this Classic Flower Earring with .90 TW
Category

Italian Clip-on Earrings

Materials

Ruby, 18k Gold

Invisibly Set Ruby Diamond Bracelet
Located in New York, NY
Impressive invisible " mystery"set design "Burma" ruby bracelet bordered with diamonds The
Category

2010s Unknown Artist Link Bracelets

Materials

Diamond, Ruby, 18k Gold

Invisible Set Ruby Gold Crossover Ring
Located in Beverly Hills, CA
A unique ring featuring 4.85 carats of princess cut rubies which are invisibly set. Van Cleef and
Category

21st Century and Contemporary American Cocktail Rings

Materials

Ruby, Gold, 18k Gold, White Gold

Invisible Set Ruby and Diamond Earrings
Located in New York, NY
seven petals, each invisibly set with square cut rubies with total weight of 42.54ct. Centers set with
Category

21st Century and Contemporary European Artist Clip-on Earrings

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

Aletto Brothers Invisible-Set Ruby Dress Set
By Aletto Brothers
Located in New York, NY
Unique invisibly set style ruby dress set by Aletto Bros., designed as a calibre-cut ruby square
Category

Late 20th Century American Cufflinks

Materials

Ruby, 18k Gold

Modern Invisibly Set Ruby Diamond Gold Ring
Located in Scottsdale, AZ
Beautiful modern style invisible set style French cut ruby ring with diamonds in Two-Tone 18k
Category

21st Century and Contemporary Cocktail Rings

Materials

Ruby, White Diamond, 18k Gold

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

Invisible Set Ruby Diamond Flower Ring Vintage 18k Yellow Gold Cocktail Jewelry
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 Cocktail Rings

Materials

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

Gold Diamond and Invisible Set Ruby Bee Brooch
Located in Chicago, IL
fine Color invisible set, step cut and Square Rubies.
Category

Early 2000s American Brooches

Materials

Diamond, Ruby

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

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

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

ALETTO BROTHERS Invisible Set Ruby Sapphire Diamond Cufflink Set
By Aletto Brothers
Located in New York City, NY
in 18K gold; one pair has invisibly set cabochon sapphires, while the other one has rubies, all
Category

21st Century and Contemporary American Contemporary Cufflinks

Materials

Ruby, Sapphire, 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

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

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

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

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

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

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

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

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

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

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

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

1950s Italian diamond and invisible setting ruby brooch
Located in London, GB
with superior workmanship, the brooch is adorned with invisible set rubies.
Category

Vintage 1950s Italian Contemporary Brooches

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

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

Diamond Pave and Ruby Invisible Setting Crisscross White Gold Band Ring
Located in Southampton, PA
well as fabulous invisibly set rubies weighing in total 8.50 carats. Ring Size: 6.75 Ring Top
Category

20th Century Band Rings

Materials

White Diamond, Ruby, 18k Gold, White Gold

TIFFANY CO Unique Retro Platinum, Ruby and Diamond Ring
By Tiffany Co.
Located in New York, NY
A Retro platinum ring featuring invisibly set rubies and diamonds by Tiffany & Co. The center of
Category

Vintage 1940s American Cluster Rings

Materials

Ruby, Diamond, Platinum

White Gold and Ruby Lips Ring
Located in New York, NY
) invisibly set rubies atop a tapering band. Size approximately 6 3/4. Gross weight approximately 7.70 grams
Category

21st Century and Contemporary Fashion Rings

Materials

Ruby, 18k Gold, White Gold

Mystery Set Ruby Diamond Gold Fairy Brooch
Located in New York, NY
Adorable! Diamond fairy sitting on a invisible set ruby globe. Fairy's face is a single pear shape
Category

2010s Unknown Artist Brooches

Materials

Diamond, Ruby, 18k Gold

Estate Tiffany Co. Checkered Ruby Diamond Earrings 18K Yellow Gold
By Tiffany Co.
Located in Dallas, TX
square cut invisible set rubies and diamonds. The earrings have a diameter of 0.4.3 inches and weigh 7.4
Category

21st Century and Contemporary Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18 Karat Gold Ruby Swirl Earrings
Located in London, England
A magical pair of invisibly-set ruby earrings, set in open-back 18-karat yellow gold studs of a
Category

2010s American Lever-Back Earrings

Materials

Ruby

Certified 2.16 Carat Ruby and Diamond Yellow Gold Cufflinks
By Royaal Stones Ltd
Located in Bangkok, Thailand
A beautifully handcrafted pair of 2.15 carat invisible set Ruby and 1.65 carat Diamond cufflinks
Category

21st Century and Contemporary Art Deco Cufflinks

Materials

Diamond, Ruby

18 Karat Gold Ruby Diamond Stud Earrings
Located in London, England
A chic pair of invisibly set ruby and diamond stud earrings in 18ct yellow gold. Consisting of nine
Category

2010s American Stud Earrings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Ruby Diamond Gold Buckle Ring
Located in South Pasadena, CA
invisibly set rubies weighing approximately 1.50 carats and the buckle of channel-set baguette diamonds
Category

Vintage 1980s Band Rings

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

Van Cleef Arpels 18K Yellow Gold Ruby Cufflinks
By Van Cleef Arpels
Located in Southampton, PA
square shape with a ridged collar punctuated at the center by four invisible-set rubies. These yellow
Category

21st Century and Contemporary Cufflinks

Materials

Ruby, 18k Gold, Yellow Gold

Oscar Heyman Diamond and Ruby Yellow Gold Ring
By Oscar Heyman
Located in Southampton, PA
set rubies weighing in total 1.60ct. Together together they exhibit an exquisite visual! Ring Size: 8
Category

Late 20th Century Unknown More Rings

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

Mouawad Ruby Diamond Gold Band Ring
By Mouawad
Located in Southampton, PA
brand's reputation. Forged from the finest 18K yellow gold, and accented with 2.13ct of invisible-set
Category

Late 20th Century Unknown Band Rings

Materials

Ruby, White Diamond, 18k Gold, Yellow Gold

Vintage Tiffany Co. Retro Ruby Ring Set in 18k Yellow Gold
By Tiffany Co.
Located in London, England
with a three vibrant invisibly set rubies set within this raised retro inspired setting! The shoulders
Category

Vintage 1980s Unknown Retro Fashion Rings

Materials

Ruby, Gold, 18k Gold, Yellow Gold

18 Karat White Gold Ruby and Diamond Flower Ring
Located in Dallas, TX
This flower ring, of 18k White Gold with 6.29cts of invisibly set Rubies and sparkling Diamonds is
Category

Vintage 1980s American Modern More Rings

Materials

Diamond, Ruby, White Gold

Diamond and Ruby Bangle Bracelet
Located in Beverly Hills, CA
is an oval-shaped red ruby. Delicately handset and cut are invisibly set baguette-shaped ruby
Category

Late 20th Century French Retro Bangles

Materials

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

Spectacular Diamond Ruby Pendant
Located in Litchfield, CT
invisibly-set rubies surrounded by 4.50 carats of brilliant white diamonds (G color, VS clarity). The look
Category

Vintage 1970s Swiss Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18 Karat Gold Parrot Brooch Sapphire Diamonds Emeralds 3.00 Total Carat Weight
Located in Laguna Beach, CA
18k but does test 18k Weighs 20 grams. There are square invisible set rubies, 3.00 total carats
Category

21st Century and Contemporary Unknown Brooches

Materials

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

Vivid Diamonds Ruby and Diamond Flower Stud Earrings
By Vivid Diamonds
Located in Miami, FL
1.10 carats total, G color, VS clarity. Heart shape petals, encrusted with invisibly set rubies
Category

21st Century and Contemporary Unknown Modern Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Retro Ruby Diamond Flower Brooch Pin
Located in Beverly Hills, CA
masterpiece. It combines the seamless beauty of invisibly set rubies with the timeless sparkle of diamonds
Category

Mid-20th Century Unknown Retro Brooches

Materials

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

【Énigma】GRC Certified 13.65ct Imperial Flame Ruby Sculpture Earrings
Located in New York, NY
invisibly set ruby frames. The seamless integration of diamonds (0.55ct) and ruby inlay across the ear-top
Category

21st Century and Contemporary Japanese Drop Earrings

Materials

Ruby, Diamond, White Gold

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Invisible Set Ruby For Sale on 1stDibs

Surely you’ll find the exact invisible set ruby you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Yellow Gold. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for an invisible set ruby may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. An invisible set ruby from Aletto Brothers, Van Cleef Arpels and Sabbadini — each of whom created a beautiful version of this treasured accessory — is worth considering. Take a look at an invisible set ruby featuring Ruby from our inventory today to add the perfect touch to your look. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes princess cut and square cut alternatives. If you’re browsing our inventory for an invisible set ruby, 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?

Prices for an invisible set ruby can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $895 and can go as high as $225,000, while this accessory, on average, fetches $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.