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Mystery Set Ruby, Diamond Brooch
Located in New York, NY
MYSTERY set ruby, diamond and crystal brooch in 18k yellow gold. Equipped with double pin and
Category

Late 20th Century European Artist Brooches

Materials

Crystal, Diamond, Ruby, 18k Gold

Mystery Set Ruby & Diamond Heart Earrings
Located in New York, NY
Mystery Set Ruby & Diamond Heart Earrings A pair of 18 karat white gold heart shaped earrings set
Category

Vintage 1980s Clip-on Earrings

Materials

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

Van Cleef & Arpels Mystery-Set Ruby, Diamond Dome Ring
By Van Cleef & Arpels
Located in New York, NY
VAN CLEEF & ARPELS Mystery-Set Ruby, Diamond Dome Ring 18k yellow gold and white gold dome ring
Category

Vintage 1960s French Dome Rings

Materials

Diamond, Ruby, 18k Gold

Mystery Set Ruby and Diamond Bombe Cocktail Ring
By Diamond Scene New York
Located in New York, NY
A spectacular piece! Mystery set Rubies swirl with approximately 2 carats of diamonds in this
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby

Mystery Set Ruby Diamond Platinum Crossover Ring Size 6
Located in Simpsonville, SC
Step into a realm of enchantment and elegance with the Mystery Set Ruby and Diamond Platinum
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Ruby, Platinum

Van Cleef & Arpels Vintage Mystery-Set Ruby Platinum Dome Ring
By Van Cleef & Arpels
Located in New York, NY
VAN CLEEF & ARPELS Vintage Mystery-Set Ruby Platinum Dome Ring Original Platinum mystery-set dome
Category

Vintage 1960s American Dome Rings

Materials

Diamond, Ruby, Platinum

18K White Gold Diamond and Mystery Set Ruby Flower Earrings
Located in Flushing, NY
18K White Gold Diamond and Mystery Set Ruby Flower Earrings Marked: K18 750 D 0.23 ct R 3.00 ct
Category

20th Century Drop Earrings

Materials

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

GRAFF Mystery Set Ruby Cufflinks
By Graff
Located in New York, NY
Square flush set Rubies set in 18K White Gold. Signed - Graff
Category

21st Century and Contemporary Cufflinks

Materials

Ruby, 18k Gold, White Gold

Mystery Set Ruby Diamond 18k White Gold Ring Size 6
Located in Simpsonville, SC
The Mystery Set Ruby Diamond 18K White Gold Ring is an extraordinary piece of jewelry that
Category

Late 20th Century Cocktail Rings

Materials

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

30 Carat Mystery Set Ruby & Diamond Dangle Earrings
By Vivid Diamonds
Located in Miami, FL
mesmerizing array of 700 impeccably invisibly set square cut rubies, each radiating with an intense crimson
Category

21st Century and Contemporary American Modern Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

VAN CLEEF & ARPELS 'Mystery-Set Ruby Pont Neuf Huggie Earrings
By Van Cleef & Arpels
Located in New York, NY
The Mystery Set represents a significant advancement in jewelry design, patented by Van Cleef
Category

1990s Hoop Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

VAN CLEEF & ARPELS Pair of Mystery-Set Ruby and Diamond Ear Clips, France
By Van Cleef & Arpels
Located in New York, NY
the Bellflower. The design cleverly mimics the form of the flower, showcasing a stunning Mystery
Category

1990s Hoop Earrings

Materials

Diamond, Ruby, Platinum

18k White Gold 4.09ctw Invisible Mystery Set Ruby Diamond East West Saddle Ring
Located in Montclair, NJ
--Stone(s):-- (28) Natural Genuine Rubies - Calibre Custom Cut - Invisible Mystery Set - Seep
Category

21st Century and Contemporary Engagement Rings

Materials

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

Ruby & Diamond Ring by Hammerman Brothers
By Hammerman Brothers
Located in Brisbane City, QLD
two panels of 'mystery' set red rubies. Each of the 52 bead set brilliant cut diamonds are of G/H
Category

20th Century American Modern Dome Rings

Materials

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

Ruby and Diamond Flower Brooch Mystery-Invisibly Set Rubies
Located in New York, NY
Ruby and Diamond Flower Brooch This brooch has invisibly set ruby petals and round brilliant-cut
Category

Mid-20th Century French Artist Brooches

Materials

Diamond, Ruby, 18k Gold

Van Cleef & Arpels Mystery Set™ Ruby Half Hoop Earrings Gold
By Van Cleef & Arpels
Located in New York, NY
VAN CLEEF & ARPELS Mystery Set™ Ruby Half Hoop Earrings in 18k Yellow Gold. A notable pair of half
Category

Vintage 1980s French Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Gorgeous 18k Gold Mystery Invisible Set Ruby & Diamond Floral Clip On Earrings
Located in Montclair, NJ
--Stone(s):-- Numerous Natural Genuine Rubies - Calibre Square Cut - Mystery Invisible Set - Vivid
Category

21st Century and Contemporary Clip-on Earrings

Materials

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

Rare FRED PARIS Mystery Ruby & Diamond Set Leaf Pin Pendant, France 18kt
By Fred Paris
Located in Miami, FL
brooch lies an exquisite array of 115 custom square step-cut natural rubies, invisibly set to perfection
Category

1990s French Contemporary Brooches

Materials

Diamond, Ruby, 18k Gold

VAN CLEEF & ARPELS Diamond Cluster and Ruby Pendant 'Mystery-Set' Ear Clips
By Van Cleef & Arpels
Located in New York, NY
pendants, elegantly set with vibrant calibré-cut rubies that catch the light beautifully. Topping off the
Category

Vintage 1960s Dangle Earrings

Materials

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

Cartier Diabolo Diamond Mystery Invisible Set Ruby K18 Yellow Gold Ring US 6.5
By Cartier
Located in Tokyo, JP
■Item No.: 30490605 ■Brand: Cartier ■Name: Diabolo Diamond Invisible Set Ruby Ring ■Material: 12P
Category

1990s French More Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Invisible set flower ruby earrings
Located in Khet Bang Rak, Krung Thep Maha Nakhon
Floral design with Mystery set natural Ruby 20 mm size which are light weight & easy on ears. Made
Category

2010s Thai Artist Stud Earrings

Materials

Diamond, Ruby, 18k Gold

Invisible set flower ruby earrings
Invisible set flower ruby earrings
W 0.87 in D 0.12 in L 0.87 in
Invisible set butterfly Ruby ring with a diamond
Located in Khet Bang Rak, Krung Thep Maha Nakhon
Butterfly ring made using natural hand picked rubies in mystery set making sure they are placed
Category

2010s Thai Arts and Crafts Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

Set of Two Diamond Sapphire Ruby Flower Brooches, France
Located in New York, NY
A pair of two elegant brooches featuring mystery-set sapphires, rubies and round and baguette
Category

20th Century French Brooches

Materials

White Diamond, Ruby, Blue Sapphire, Platinum

Diamonds & Princess Cut Invisible Set Rubies Men's Ring 18 Karat 2Tone Gold Ring
Located in New York, NY
Mystery set Princess cut Natural Ruby And Diamond ring in 18 K Yellow and white Gold . perfect
Category

2010s Wedding Rings

Materials

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

Mystery Set Ruby and Diamond Pendant Earrings
By Amyn The Jeweler
Located in Santa Monica, CA
Mystery Set Ruby and Diamond Pendant Earrings in White Gold. Designed by Amyn The Jeweler
Category

20th Century Hong Kong Drop Earrings

Materials

Diamond, Ruby, White Gold

Van Cleef & Arpels Mystery Set Ruby with Heart Shape Diamonds
By Van Cleef & Arpels
Located in New York, NY
A Van Cleef & Arpels Mystery Set Ruby with Heart Shape Diamonds making a floral shape, made in 18
Category

20th Century Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

Octagonal Mystery Set Ruby and Diamond Ring, 18 Karat Yellow Gold
Located in New York, NY
An Octagonal Mystery Set Ruby and Diamond Ring in 18 Karat Yellow Gold. Ruby Weight: 1.59 carats
Category

20th Century Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Vintage Mystery Set Ruby & Diamond Bombe Dome Ring in 18k Yellow Gold
Located in La Jolla, CA
Wide Ruby and Diamond Bombe Ring in 18k Yellow Gold Mystery Set Ruby & Diamond Bombe Dome Ring
Category

20th Century Unknown Dome Rings

Materials

Diamond, Ruby, 18k Gold, Yellow 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

Mystery Set Ruby Diamond Gold Dome Ring
Located in Beverly Hills, CA
First patented by Van Cleef & Arpels in 1933 this masterful skill seamlessly sets stones
Category

21st Century and Contemporary Unknown Modern Dome Rings

Materials

Diamond, Ruby, 18k Gold

Mystery Set Ruby Diamond Gold Dome Ring
Located in Beverly Hills, CA
First patented by Van Cleef & Arpels in 1933 this masterful skill seamlessly sets stones without
Category

21st Century and Contemporary Unknown Modern Dome Rings

Materials

Diamond, Ruby, 18k Gold

Mystery Set Ruby Diamond Leaf Ear Clips
Located in New York, NY
Beautiful mystere set ruby "leaf" design ear clips, 228 french cut rubies set in invisible style
Category

21st Century and Contemporary Unknown Artist Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Mystery Set Ruby and Diamond Ring, 18 Karat Yellow Gold
Located in New York, NY
An invisibly set, mystery ring with Rubies with diamonds on the side. Set in 18 Karat Yellow Gold
Category

20th Century Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

VAN CLEEF & ARPELS Caresse d'Éole Fairy Clip. Traditional Mystery Set, Rubies
By Van Cleef & Arpels
Located in New York, NY
This piece is a Van Cleef & Arpels classic because it uses the House’s unique Mystery Set technique
Category

21st Century and Contemporary Brooches

Materials

Diamond, Ruby, 18k Gold, White 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

Solid 18k White Gold Mystery Set Ruby & Diamond Heart Cocktail Band Ring
Located in Montclair, NJ
--Stone(s):-- Numerous Natural Genuine Rubies - Calibre Cut - Mystery Invisible Set - Vivid Red
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, Gold, 18k Gold, White 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

Burmese Ruby "Mystery Set" Diamond Gold Earrings
Located in New York, NY
Classic ruby and diamond flower earrings. Five mystery set ruby flower petals centered with 5
Category

2010s Unknown Artist Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Classic Burmese Ruby Diamond Gold Earrings
Located in New York, NY
Classic ruby and diamond flower earrings. Five mystery set ruby flower petals centered with 5
Category

2010s Unknown Artist Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold

Bracelet with diamonds and invisible set Ruby
Located in Khet Bang Rak, Krung Thep Maha Nakhon
2.60 carat diamonds are used to make this glamorous Bracelet along with 6 carat of mystery set rubies
Category

2010s Thai Art Deco Modern Bracelets

Materials

Ruby, Diamond, 18k Gold

Invisible set floral Ruby bracelet with diamond studded triple coil mechanism
Located in Khet Bang Rak, Krung Thep Maha Nakhon
Invisible set natural ruby petal on one end & a heart shaped on the other end makes it one of its kind. A
Category

2010s Thai Art Deco Modern Bracelets

Materials

Diamond, Ruby, 18k Gold

Ruby Diamond Mystery-Set Gold Bracelet
Located in Miami, FL
adorned with a total of 408 mystery-set genuine French square-cut rubies weighing approx. 82.96 cts and
Category

Vintage 1960s Unknown Retro Link Bracelets

Materials

Diamond, Ruby, White Gold, 18k Gold

Contemporary 8.70 Carats Ruby Diamond Mystery Set Drop Earrings
Located in Philadelphia, PA
color with VS clarity - terminating as a pear shaped drop. With rubies mystery set fully around
Category

Early 2000s Contemporary Hoop Earrings

Materials

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

Mystery Set Rectangular Ruby and Diamond Pendant, 18 Karat White Gold
Located in New York, NY
A Mystery Set Rectangular Ruby and Diamond Pendant in 18K White Gold. Ruby Weight: 4.88 carats
Category

20th Century Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

VAN CLEEF & ARPELS "Mystery" Set Ring
Located in San Antonio, TX
18 kt. gold ring set with square -cut rubies in mystery setting, flank with square-cut diamonds
Category

French Dome Rings

Materials

Ruby

Pair of "Mystery Set" 50 Cr Ruby & Diamond "Fleurettes" Ear Stud Earrings, 18KYG
Located in New York, NY
These stunning cocktail earrings feature an invisible or mystery set of princess cut Burma ruby and
Category

Early 20th Century Lever-Back Earrings

Materials

Ruby, Diamond, 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

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

Van Cleef & Arpels Art Deco Ruby and Diamond Tie Pin, ca. 1930s
By Van Cleef & Arpels
Located in Idar-Oberstein, DE
& Arpels from the 1930s in an oval shape, set with mystery-cut ruby surround and two Asscher cut diamonds
Category

Vintage 1930s French Art Deco Cufflinks

Materials

Diamond, Ruby, 18k Gold

Van Cleef & Arpels Mystery Set Ruby Cufflinks And Studs
By Van Cleef & Arpels
Located in New York, NY
An elegant and timeless pair of square shaped Mystery-Set Ruby Cufflinks by Van Cleef & Arpels
Category

Vintage 1980s French Cufflinks

Materials

Ruby, 18k Gold

Mystery Set Ruby and Diamond Brooch by Schilling
Located in Idar-Oberstein, DE
A ruby and diamond brooch in platinum, by the German jeweller Schilling. The rubies are mystery set
Category

Mid-20th Century German Brooches

Materials

Diamond, Ruby, Platinum

Sabbadini Mystery Set Ruby Diamond Flower Brooch Pin
By Sabbadini
Located in Miami, FL
design of bombé calibrated square-cut ruby petals (in invisible mystery setting which was originally
Category

Late 20th Century Italian Brooches

Materials

Diamond, Ruby, 18k Gold

Invisible Mystery Set Ruby and Diamond Flower Brooch and Pendant
Located in Zurich, Zollstrasse
. 17.30 grams. It features a floral design of bombé calibrated 220 natural rubies (in invisible mystery
Category

2010s Unknown Contemporary Brooches

Materials

Diamond, Ruby, 18k Gold, White Gold

Pair of "Mystery Set" Ruby & Diamond "Fleurettes" Ear Pendants Earrings, 18K
Located in New York, NY
Invisible or Mystery set Princess cut Burma Ruby And Diamond Cocktail Earring in 18 K
Category

Early 20th Century Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold

1.87ct Natural Red Ruby & Diamond Mystery Set 18k White Gold Briolette Necklace
Located in Birmingham, GB
stunning shape pendant with beautiful mystery set rubies (a style of setting first developed by French fine
Category

20th Century Pendant Necklaces

Materials

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

Mystery Set 2.25 Carat Ruby Diamond 18k Gold Ring Size 6.25
Located in Simpsonville, SC
The Mystery Set 2.25 Carat Ruby Diamond 18k Gold Ring is an extraordinary display of craftsmanship
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Diamonds & Princess Cut Invisible Set Rubies Men's 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

VAN CLEEF & ARPELS Mystery Set Ruby Earclips
Located in New York City, NY
A superb pair of Mystery- Set VanCleef & Arpels ruby and diamond ear clips. Signed with inventory
Category

American Clip-on Earrings

Materials

Diamond, Ruby, Platinum, 18k Gold

VAN CLEEF & ARPELS Mystery Set Ruby Ring
Located in New York City, NY
Rare mystery-set four row ruby platinum ring. Signed with serial numbers. Set on Platinum. Ring
Category

American Cocktail Rings

Van Cleef & Arpels Important Mystery-Set Ruby & Diamond Bracelet
By Van Cleef & Arpels
Located in Southampton, NY
This fabulous flexible bracelet is mystery-set with diagonal lines of square-cut diamonds within a
Category

1990s French More Bracelets

Materials

Diamond, Ruby, 18k Gold

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Mystery Set Ruby For Sale on 1stDibs

Surely you’ll find the exact mystery set ruby you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. Find an antique version now, or shop for 40 vintage or 7 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a mystery 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. For this particular piece, are consistently popular carat weights. Creating a mystery set ruby has been a part of the legacy of many jewelers, but those produced by Van Cleef & Arpels, Bulgari and Cartier are consistently popular. See these pages for a round cut iteration of this accessory, while there are also square cut cut and baguette cut cut versions available here, too. When shopping for a mystery set ruby, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Mystery Set Ruby?

The price for a mystery set ruby starts at $3,000 and tops out at $750,000 with these brooches, on average, selling for $19,000.

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.