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IGI Certified 2.37 Carat Ruby and Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Experience the sheer opulence of this IGI Certified, 3.42 Total Carat Weight (TCW) masterpiece
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Luxurious 1.00ct Rubies and Diamonds Ring in 18k Yellow Gold - IGI Certified
Located in רמת גן, IL
Luxurious 1.00ct Rubies and Diamonds Ring in 18k Yellow Gold - IGI Certified This 18k yellow gold
Category

2010s Israeli Cluster Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

IGI Certified 2.33 Carat Red Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
gold and ready to be worn. Comes with original IGI certificate stating natural untreated ruby. The ring
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, White Gold

Exquisite 6.70ct Diamonds and Rubies Bangle in 18k Yellow Gold - IGI Certified
Located in רמת גן, IL
Exquisite 6.70ct Diamonds and Rubies Bangle in 18k Yellow Gold - IGI Certified Indulge in timeless
Category

2010s Israeli Bangles

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

IGI Certified 2.48 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Presenting a truly remarkable piece of jewelry featuring an IGI Certified 2.48 Carat Ruby
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified Rare 11.33 Carat Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Presenting a truly mesmerizing piece, behold the IGI Certified rare 11.33 Carat Ruby Ring in
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, White Gold

IGI Certified 3.10 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
ruby to take center stage, capturing attention with their natural beauty. This ring has been IGI
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.98 Carat Ruby and Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Declare your love with this breathtaking IGI Certified ring, a stunning piece with a total
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 9.39ct Natural Burma Ruby and 3.93ct Natural Diamond Platinum Ring
Located in Hong Kong, HK
certified by IGI laboratory, report number: 29J0790522 For more information, please see the attached
Category

21st Century and Contemporary Hong Kong Cocktail Rings

Materials

Diamond, Ruby, Platinum

IGI Certified 1.19 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Introducing a stunning piece of jewelry, the IGI Certified 1.19 Carat deep red natural ruby in an
Category

1990s Hong Kong Art Deco Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.10 Carat Pear Ruby Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Presenting a sensational pair of earrings adorned with IGI Certified 4.10 Carat Rubies
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, White Gold

IGI Certified 3.00 Carat Burma Ruby Diamond Ring in 18K Rose Gold
Located in KOWLOON, HK
elegance. 18K Rose Gold: A warm and romantic metal setting. IGI Certified: The International Gemological
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, Rose Gold

IGI Certified 18.49 Carat Burma Ruby &Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
. Featuring a stunning IGI Certified 18.49 Carat Burma Ruby, with two pear-shaped rubies approximately 9.66
Category

2010s Hong Kong Modern Dangle Earrings

Materials

Diamond, Ruby, White Gold

IGI Certified 2.15 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
lies a breathtaking 2.15 carat ruby, certified by IGI, with its vivid purplish red hue. The remarkable
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 10.30 Carat Red Ruby Diamond Pendent in 18K Black Gold
Located in KOWLOON, HK
-fabricated in 18K black gold and ready to be worn. Comes with original IGI certificate stating natural ruby
Category

2010s Hong Kong Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, Gold

IGI Certified 8.28 Carat Ruby and Diamond Ring in 18K Yellow Gold
Located in KOWLOON, HK
Experience the opulence of this exceptional ring, a breathtaking showcase of a natural ruby. This
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

IGI Certified 5.13 Carat Burma Ruby Diamond Ring in 18K Rose Gold
Located in KOWLOON, HK
glamour and elegance. 18K Rose Gold: A warm and romantic metal setting. IGI Certified: The International
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

IGI Certified 6.45 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
to make a bold fashion statement, this IGI certified 6.45 carat deep red Burma ruby and 0.78 carat
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 10.00ct Natural Rubies and 3.60ct Diamonds 18k White Gold Earrings
Located in Hong Kong, HK
certified by IGI laboratory, report number: 24J6802623 For more information, please see the attached
Category

21st Century and Contemporary Hong Kong Drop Earrings

Materials

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

IGI Certified 3.15 Carat Red Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Unheated rubies are sought after for their rarity in market. This 18k white gold ring featuring a
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, White Gold

IGI Certified 2.96 Carat Burma Ruby Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Captivating 18k White Gold Earrings with Intense Pinkish-Red Burmese Rubies and Diamond Halos
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.26 Carat Unheated Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Certified 1.26 Carat intense pink red UNHEATED Natural ruby ring in cushion shape & 0.31ct natural round
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 3.08 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Burmese rubies are sought after for their beautiful red tones. This 18k white gold ring featuring a
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI-Certified 1.4ct Pear-Cut Emerald, Sapphire &Ruby Ring with Triangle Diamonds
Located in Jaipur, RJ
) Certification: IGI Certified 🛠️ Metal Craftsmanship: Metal: 18K White Gold Band Style: Split Band
Category

2010s Indian Art Deco Cocktail Rings

Materials

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

IGI Certified 4.57ct Natural Ruby and 0.36ct Diamonds 18k White Gold Ring
Located in Hong Kong, HK
celebrating the timeless allure of nature's finest gemstones. This ring is certified by IGI laboratory
Category

21st Century and Contemporary Hong Kong Cocktail Rings

Materials

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

IGI Certified 2.00 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
This captivating ring showcases a natural ruby, hailing from the esteemed mines of Myanmar
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.89 Carat Ruby and Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Behold a captivating pair of 18K white gold stud earrings, each showcasing a stunning oval-cut ruby
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.12 Carat Ruby and Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
earring is a magnificent oval-cut ruby, boasting a substantial total weight of 4.12 carats. These rubies
Category

2010s Hong Kong Modern Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 3.01 Carat Burma Ruby Diamond Earrings in 18K Pink Gold
Located in KOWLOON, HK
Exquisite 18k Pink Gold Earrings with Intense Pink-Red Burmese Rubies and Sparkling Diamonds These
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, Gold

IGI Certified 6.10 Carat Ruby and Diamond Pendant in 18K White Gold
Located in KOWLOON, HK
natural ruby. The classic oval cut beautifully displays the gem's rich and captivating intense purplish
Category

2010s Hong Kong Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.26 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
stunning IGI Certified 2.26 Carat ruby in a deep purplish-red color, elegantly cut into a rectangular
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.01 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
IGI Certified 2.01 Carat Burma Ruby in a vivid purplish-red hue, elegantly shaped into an oval
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.08 Carat Burma Ruby and Diamond Earrings in 18K Rose Gold
Located in KOWLOON, HK
A truly magnificent find, these IGI Certified earrings showcase a remarkable 4.08 total carat
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

IGI Certified 4.33 Carat Burma Ruby Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Radiant 18K White Gold Earrings with Two Vivid Purple Rubies and Shimmering Diamonds These
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.08 Carat Oval Unheated Ruby 18k Yellow Gold Cocktail Ring
By Antinori Fine Jewels
Located in Chicago, IL
ruby, certified by the International Gemological Institute, exhibits a deep pinkish-red color and
Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

IGI Certified 2.35 Carat Burma Ruby and Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Behold the regal splendor of this IGI Certified ring, a luxurious creation featuring a total
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.37 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
This striking ring showcases a magnificent marquise mixed cut ruby, a gem that exudes both elegance
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 3.82 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
elegance and vibrant color. At its heart lies a breathtaking 3.82 carat oval mixed cut ruby, a gem that
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.08 Carat Burma Ruby Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Burmese rubies and the brilliance of diamonds. At the heart of each earring lies a captivating heart
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.33 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
love itself. This exquisite ring features a breathtaking heart-shaped ruby, a true testament to romance
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.82 Carat Burma Ruby and Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
A truly exceptional expression of love and rarity, these IGI Certified earrings showcase a
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.76 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
This exquisite ring features a stunning oval-cut Burma ruby, weighing a substantial 4.76 carats
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.89 Carat Burma Ruby and Diamond Pendant in 18K White Gold
Located in KOWLOON, HK
Presenting an exquisite 18K White Gold Pendant, a breathtaking piece certified by the International
Category

2010s Hong Kong Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.24 Carat Burma Ruby Diamond Ring in 18K Rose Gold
Located in KOWLOON, HK
This exquisite ring features a captivating marquise-cut Burmese ruby, weighing 2.24 carats. The
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

IGI Certified 2.08 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
This exquisite ring features a captivating pear-shaped Burmese ruby, weighing 2.08 carats. The
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 5.86 Carat Ruby 0.62 Carat Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
. The earring weighs 5.48 grams. The rubies are highly saturated in color. Accompanied by IGI report
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby, White Gold

IGI Certified 1.24 Carat Emerald Cut Natural Ruby Diamond Double Halo Ring
Located in Houston, TX
This enchanting ring showcases a 1.24ct emerald-cut natural ruby, elegantly framed by a double halo
Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

AGL IGI Certified 1.75 Carat Diamond Gold Burma Ruby Three Stone Ring
By Diamond Stars Jewelry, Inc.
Located in New York, NY
step cut or emerald cut. The Center Ruby is a step cut and certified by AGL. There are 0.50 Carats
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Ruby, Gold, 14k Gold, White Gold, Yellow Gold

IGI certified Natural ruby brilliant cut diamond 14K gold stud round earrings
Located in Delhi, DL
This pair of elegant earring with natural ruby and brilliant cut diamonds in solid 14K gold is a
Category

2010s Indian Contemporary Stud Earrings

Materials

Diamond, Ruby, Yellow Gold, 14k Gold

IGI Certified 1.58 Carat Ruby 0.44 Carat Diamond Earrings in 18K White Gold
Located in KOWLOON, HK
Introducing a captivating pair of IGI Certified 1.58 Carat Ruby Dangle Earrings, a truly
Category

2010s Hong Kong Modern Hoop Earrings

Materials

Diamond, Ruby, White Gold

IGI Certified Rare 14.13 Carat Burma Ruby Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Introducing a truly extraordinary piece of jewelry, the IGI Certified 14.13 Carat Burma Ruby and
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 2.00 Carat Burma Ruby and Diamond Pendant in 18K White Gold
Located in KOWLOON, HK
Discover the allure of this magnificent 18K White Gold Pendant, officially certified by the
Category

2010s Hong Kong Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 4.69 Carat Burma Ruby Diamond Jackets Earrings in 18K White Gold
Located in KOWLOON, HK
pair of earrings weighs 5.04 grams. The rubies are highly saturated in color. Accompanied by IGI report
Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Ruby

IGI Certified 3.10 Carat Triple Ruby Diamond Halo Ring in 18K White Gold
Located in KOWLOON, HK
unforgettable piece of jewelry. The rare and intense purplish-red color of the rubies, as certified by the IGI
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 8.75 Carat Ruby 3.14 Carat Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Elevate your jewelry collection with the luxurious allure of this IGI Certified 8.75 Carat ruby
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 1.38 Carat Ruby and 1.28 CaratDiamond Earrings in 18K White Gold
Located in KOWLOON, HK
masterpiece of vibrant color and dazzling brilliance. Each earring features a magnificent natural ruby
Category

2010s Hong Kong Modern Drop Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

IGI Certified 8.88 Carat Unheated Red Ruby Diamond Pendent in 18K White Gold
Located in KOWLOON, HK
white gold and ready to be worn. Comes with original IGI certificate stating natural untreated ruby. The
Category

2010s Hong Kong Modern Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

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Igi Certified Ruby For Sale on 1stDibs

Find the exact igi certified ruby you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 14k Gold and 18k Gold, this item was constructed with great care. A igi certified ruby from Antinori Fine Jewels, Privosa Fine Jewelry and Diamond Stars Jewelry, Inc. — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for an oval cut iteration of this accessory, while there are also emerald cut cut and brilliant cut cut versions available here, too. Most of our igi certified ruby for sale are for women, but there are 24 pieces available to browse for men.

How Much is a Igi Certified Ruby?

On average, a igi certified ruby at 1stDibs sells for $566, while they’re typically $50 on the low end and $112,500 for the highest priced versions of this item.

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.