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Siam Ruby

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461
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25
661
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4
7
17
3
14
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38
91
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85
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Syna Yellow Gold Jardin Flower Studs With Rubies and Diamonds
By Syna Jewels
Located in Fort Lee, NJ
Created in 18 karat yellow gold Rubies 0.08 carat approx. Diamonds 0.45 carat approx. 18kyg
Category

2010s Thai Contemporary Stud Earrings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.93 carats with Diamond 0.19 carat Ring set in 18 Karat Gold Settings Width: 1.9 cm Length
Category

2010s Thai Contemporary Three-Stone Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Black Diamond Necklace set in 18K Gold Settings
Located in Bangkok, TH
Ruby 39.62 carats with Black Diamond 10.10 carats Necklace set in 18K Gold Settings Width: 0.9 cm
Category

2010s Thai Contemporary Link Necklaces

Materials

Black Diamond, Ruby, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 2.22 carats with Diamond 0.77 carat Ring set in 18 Karat Gold Settings Width: 0.8 cm Length
Category

2010s Thai Contemporary More Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Bracelet Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 6.01 carats with Diamond 2.93 carats Bracelet set In 18 Karat Gold Settings Width: 1.0 cm
Category

2010s Thai Art Deco Tennis Bracelets

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.04 carats with Diamond 0.81 carat Ring set in 18 Karat Gold Settings Width: 1.8 cm Length
Category

2010s Thai More Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Earrings set in 18K White Gold Settings
Located in Bangkok, TH
Ruby 1.58 carats with Diamond 0.28 carat Earrings set in 18K White Gold Settings Width: 0.5 cm
Category

2010s Thai Contemporary Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Necklace Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.21 carats with Diamond 0.02 carat Necklace set in 18 Karat Gold Settings Width: 1.4 cm
Category

2010s Thai Contemporary More Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold

18 Karat Light Yellow Diamond Red Ruby Pendant Art Deco Necklace
Located in Brooklyn, NY
Art Deco Style Very Elegant size and bold red Ruby Center is natural Light Yellow Diamond
Category

2010s Thai Art Deco Pendant Necklaces

Materials

Yellow Diamond, Ruby, Gold, 18k Gold

Ruby, Yellow Sapphire and Diamond Organic Earrings in 18k Gold
By Kavant Sharart
Located in Bangkok, 10
Ruby 3.88 carats with Yellow Sapphire 3.09 carats and Diamond 0.58 carat Earrings set in 18 Karat
Category

2010s Thai Clip-on Earrings

Materials

Diamond, Ruby, Yellow Sapphire, 18k Gold

Ruby with Diamond Earrings Set in 18k White Gold Settings
Located in Bangkok, TH
Ruby 6.27 carats with Diamond 1.09 carats Earrings set in 18K White Gold Settings Width: 2.5 cm
Category

2010s Thai Contemporary Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby and Diamond Earrings set in 18K White Gold Setting
Located in Bangkok, TH
Ruby 18.73 carats and Diamond 4.12 carats Earrings set in 18K White Gold Settings Width: 2.5 cm
Category

2010s Thai Contemporary Chandelier Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby, Emerald and Diamond Ring set in 18K Gold Settings
Located in Bangkok, TH
Ruby 1.07 carats, Emerald 0.74 carat and Diamond 0.11 carat Ring set in 18K Gold Settings Width
Category

2010s Thai Contemporary Cluster Rings

Materials

Diamond, Emerald, Ruby, 18k Gold

Ruby with Diamond Earrings set in 18K White Gold Settings
Located in Bangkok, TH
Ruby 1.65 carats with Diamond 0.65 carat Earrings set in 18K White Gold Settings Width: 0.5 cm
Category

2010s Thai Contemporary Hoop Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby and Diamond Earrings Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 8.63 carats and Diamond 0.67 carat Earrings set in 18 Karat Gold Settings Width: 1.2 cm
Category

2010s Thai Contemporary Clip-on Earrings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Earrings set in 18K White Gold Setting
Located in Bangkok, TH
Ruby 4.75 carats with Diamond 4.16 carats Earrings set in 18K White Gold Settings Width: 1.8 cm
Category

2010s Thai Contemporary Clip-on Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 7.75 carats with Diamond 0.94 carat Ring set in 18 Karat Gold Settings Width: 2.0 cm Length
Category

2010s Thai Contemporary More Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby Eternity Band Ring set in 18K Rose Gold Settings
Located in Bangkok, TH
Ruby 0.28 carat Ring set in 18K Rose Gold Settings Width: 2.0 cm Length: 0.2 cm Ring Size: 53
Category

2010s Thai Contemporary Band Rings

Materials

Ruby, 18k Gold, Rose Gold

Ruby and Diamond Brooch/Pendant set in 18K Gold Settings
Located in Bangkok, TH
Ruby 5.69 carats and Diamond 1.37 carats Brooch/Pendant set in 18K Gold Settings Width: 5.3 cm
Category

2010s Thai Art Deco Brooches

Materials

Diamond, Ruby, 18k Gold

Ruby with Diamond Earrings set in 18K White Gold Setting
Located in Bangkok, TH
Ruby 1.93 carats with Diamond 0.43 carat Earrings set in 18K White Gold Settings Width: 0.9 cm
Category

2010s Thai Contemporary Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Earrings set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 2.20 carats with Diamond 1.02 carat Earrings set in 18 Karat Gold Settings Width: 1.3 cm
Category

2010s Thai Art Deco Stud Earrings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Earrings set in 18K White Gold Settings
Located in Bangkok, TH
Ruby 5.58 carats with Diamond 0.62 carat Earrings set in 18K White Gold Settings Width: 1.2 cm
Category

2010s Thai Contemporary Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Natural Ruby Vintage Style Dangle Earrings in 9K Yellow Gold
Located in Bangkok, TH
round ruby nestled in delicate golden scrollwork, evoking a sense of vintage glamour and lasting
Category

21st Century and Contemporary Thai Edwardian Dangle Earrings

Materials

Ruby, 9k Gold, Yellow Gold

18 Carat White Gold Ruby and Diamond Heart Necklace
By La Fleur Jewels
Located in Bangkok, TH
time for party. We use the top quality of ruby which are deep red and sparking .Ruby use 3.73 ct, Heart
Category

21st Century and Contemporary Thai Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

11.36 Carat Ruby And Diamond Earrings In 18 Karat White Gold
By Rewa Jewellery
Located in Bangkok, TH
An elegant pair of ruby and diamond dangle earrings from Rewa Jewels is made in 18 karat white gold
Category

2010s Thai Modernist Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

4.07 Carat Ruby and Diamond Earrings In 18 Karat White Gold
By Rewa Jewellery
Located in Bangkok, TH
An elegant pair of ruby and diamond dangle earrings from Rewa Jewels is made in 18 karat white
Category

2010s Thai Modern Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Ring set in 18K Rose Gold Settings
Located in Bangkok, TH
Ruby 1.51 carat with Diamond 0.06 carat Ring set in 18K Rose Gold Settings Width: 2.0 cm Length
Category

2010s Thai Contemporary Band Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Ruby with Diamond Ring set in 18K Rose Gold Settings
Located in Bangkok, TH
Ruby 0.75 carat with Diamond 0.04 carat Ring set in 18K Rose Gold Settings Width: 1.7 cm Length
Category

2010s Thai Contemporary Band Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Ruby with Diamond Pendants set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 4.69 carats with Diamond 0.46 carat Pendants set in 18 Karat White Gold Settings (chain not
Category

2010s Thai Contemporary Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

GRS Certified 2cts Pigeon s Blood Burmese Ruby with Diamond Ring in Platinum
Located in Bangkok, TH
Ruby 2.01 carats with two Diamonds on either side total 1.08 carats, and the rest of the Diamond
Category

2010s Thai Contemporary Solitaire Rings

Materials

Diamond, Ruby, Platinum

Origami Link No. 5 Ruby with Enamel Earrings 18K Rose Gold Petite
By Kavant Sharart
Located in Bangkok, 10
Ruby 0.36 carat Enamel Earrings 18K Rose Gold Settings Width: 1.3 cm Length: 1.6 cm Weight: 3.93
Category

2010s Thai Hoop Earrings

Materials

Ruby, 18k Gold, Rose Gold, Enamel

18K Gold 0.30ct Oval Vivid Red Ruby 0.28ct Diamond Vintage Fine Ring
Located in เกาะสมุย, TH
This wonderful ring boasts a vivid red oval cut ruby of 0.30 carats from Thailand. The stunning
Category

20th Century Thai Engagement Rings

Materials

Diamond, Ruby, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 2.17 carats with Diamond 0.80 carat Ring set in 18 Karat Gold Settings Width: 2.0 cm Length
Category

2010s Thai Edwardian More Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 8.31 carats with Diamond 0.55 carat Ring set in 18 Karat Gold Settings Width: 1.8 cm Length
Category

2010s Thai Contemporary More Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 2.36 carats with Diamond 0.05 carat Ring set in 18 Karat Gold Settings Width: 2.0 cm Length
Category

2010s Thai Contemporary Band Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Pendant Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.17 carats with Diamond 0.82 carat Pendant set in 18 Karat Gold Settings (chain not included
Category

2010s Thai Contemporary Pendant Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.20 carats with Diamond 0.80 carat Ring set in 18 Karat Gold Settings Width: 1.0 cm Length
Category

2010s Thai Contemporary Solitaire Rings

Materials

Diamond, Ruby, Gold, 18k Gold

9K Yellow Gold Ruby and Diamond Vintage Style Three Stone Ring
Located in Bangkok, TH
Three radiant rubies set in a graceful row, exuding rich red hues. Between each ruby, sparkling
Category

21st Century and Contemporary Thai Edwardian Solitaire Rings

Materials

Diamond, Ruby, 9k Gold, Yellow Gold

0.60 Pear shape Ruby with Diamond Ring in 18 Karat Gold
Located in Bangkok, 10
diamonds and a striking ruby. Crafted in lustrous white metal, 18 Karat Gold, the ring has a unique open
Category

2010s Thai Cocktail Rings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby and White Sapphire Elephant Necklace set in Silver Settings
Located in Dusit, 10
Ruby and White Sapphire Necklace set in Silver Settings Width: 1.9 cm Length: 45.5 cm Total
Category

2010s Thai Contemporary More Necklaces

Materials

Ruby, Sapphire, Silver

18 Carat White Gold Ruby and Diamond Cross Pendant
By La Fleur Jewels
Located in Bangkok, TH
stone. This pendant is very nice style you can use in many occasion in every day time use. Ruby use 3.05
Category

21st Century and Contemporary Thai Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Cabochon Ruby with Diamond Earrings Set in 18 Karat Gold Settings
Located in Bangkok, TH
Cabochon Ruby 14.76 carats with Diamond 4.09 carats Earrings set in 18 Karat Gold Settings Width
Category

2010s Thai Contemporary Clip-on Earrings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Heart Earrings Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 35.70 carats with Diamond 0.29 carat Earrings set in 18 Karat Gold Settings Width: 2.3 cm
Category

2010s Thai Contemporary Dangle Earrings

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Earrings Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 4.62 carats with Diamond 0.37 carat Earrings set in 18 Karat White Gold Settings Width: 0.8
Category

2010s Thai Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Diamond with Ruby Bee Brooch Set in 18 Karat Gold Settings
Located in Bangkok, TH
Diamond 0.34 carat with Ruby 0.01 carat Brooch set in 18 Karat Gold Settings Width: 2.4 cm
Category

2010s Thai Brooches

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby with Diamond Pendant Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 1.74 carats with Diamond 0.11 carat Pendant set in 18 Karat White Gold Settings (chain not
Category

2010s Thai Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Earrings Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 2.03 carats with Diamond 0.57 carats Earrings set in 18 Karat White Gold Settings Width: 1.0
Category

2010s Thai Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Earrings Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 2.95 carats with Diamond 0.43 carat Earrings set in 18 Karat White Gold Settings Width: 0.9
Category

2010s Thai Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Crystal Quartz with Ruby Earrings Set in 18 Karat Gold Settings
Located in Bangkok, TH
Crystal Quartz 3.15 carats with Ruby 2.63 carats Earrings set in 18 Karat Gold Settings Width: 1.3
Category

2010s Thai Clip-on Earrings

Materials

Crystal, Quartz, Ruby, Gold, 18k Gold

Ruby with Diamond Earrings Set in 18 Karat White Gold Settings
Located in Bangkok, TH
Ruby 8.32 carats with Diamond 0.99 carat Earrings set in 18 Karat White Gold Settings Width: 1.6
Category

2010s Thai Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Flower Brooch Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 10.21 carats with Diamond 3.84 carats Brooch set in 18 Karat Gold Settings Width: 3.8 cm
Category

2010s Thai Pendant Necklaces

Materials

Diamond, Ruby, Gold, 18k Gold

GIA Certified Ruby with Diamond Ring set in 18K Gold Settings
Located in Bangkok, TH
Ruby 7.91 carats with Diamond 1.63 carats Ring set in 18K Gold Settings (GIA Certified) Width
Category

2010s Thai Contemporary Solitaire Rings

Materials

Diamond, Ruby, 18k Gold

ICA 18K Gold Oval 1.05ct Myanmar Ruby 0.38ct Brilliant Diamond Fine Ring
Located in เกาะสมุย, TH
A celebration of passion and precision, this handcrafted ring features a vivid 1.05 carat oval ruby
Category

20th Century Thai Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

Bochic “Capri” Multi Color Natural Sapphire and Ruby Drop Earrings
By Bochic
Located in New York, NY
Bochic Multi color Sapphire and Ruby Drop Earrings Purple Sapphire / Natural Pink Sapphire
Category

21st Century and Contemporary Thai Art Nouveau Dangle Earrings

Materials

Ruby, Sapphire

18 Carat White Gold Orchid Flower Ruby Invisible Stud Earrings
By La Fleur Jewels
Located in Bangkok, TH
A lovely ruby stud earrings that you can use as everyday. We use the top quality Ruby for our
Category

21st Century and Contemporary Thai Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

26.13 Carat Mozambique Ruby And Diamond Necklace In 18 Karat White Gold
By Rewa Jewellery
Located in Bangkok, TH
An elegant Mozambique ruby and diamond necklace showcased by Rewa jewels is handcrafted in 18
Category

2010s Thai Modern Drop Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby with Diamond Ring in 18K White Gold Settings
Located in Bangkok, TH
Ruby 1.01 carats with Diamond 0.15 carat Ring in 18K White Gold Settings Width: 1.1 cm Length
Category

2010s Thai Contemporary Cluster Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

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Siam Ruby For Sale on 1stDibs

Find the exact siam ruby you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. You can easily find a 28 antique edition and 23 modern creations to choose from as well. Finding the perfect siam ruby may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. For this particular piece, 1 Carat and 1.5 Carat are consistently popular carat weights. Creating a siam ruby has been a part of the legacy of many jewelers, but those produced by Andreoli, Avanti and Berca Atelier are consistently popular. 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. Finding a siam ruby for sale for women should be easy, but there are 18 pieces available to browse for unisex as well as men, too.

How Much is a Siam Ruby?

Prices for a siam ruby can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $575 and can go as high as $300,116, while this accessory, on average, fetches $12,201.

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.