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Bright Red Ruby Ring w Earth Mined Diamonds in Solid 14K Gold Oval 8x6mm
Located in Columbus, OH
This beautiful ring features a 1.18 carat oval ruby gemstone with a triad of natural earth mined
Category

21st Century and Contemporary Modern Fashion Rings

Materials

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

Dainty Madagascar Ruby Studs w Diamond Accents in 14K White Gold OV 8x6mm
Located in Columbus, OH
These dainty stud earrings feature a pair of 3.31 carat weight oval ruby gemstones with natural
Category

21st Century and Contemporary Art Deco Stud Earrings

Materials

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

Silvorra Five-Petal Natural Ruby Zircon Halo Floral Sterling Silver Pendant
Located in New York, NY
gemstones. The rubies are beautifully arranged in a mix of oval and round cuts, measuring approximately 6
Category

21st Century and Contemporary American Art Deco Pendant Necklaces

Materials

Ruby, Zircon, Silver, Sterling Silver

Natural 1.41cts Ruby 0.08cts Diamond Stud Earrings in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Stud Earrings

Materials

Diamond, Ruby, 14k Gold

Natural 7.37cts Ruby 0.60cts Diamond Stud Earrings in 18k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Stud Earrings

Materials

Diamond, Ruby, 18k Gold

Ruby and trillion diamond trilogy engagement ring 18k yellow gold
By Unbranded
Located in London, GB
shaped ruby and trillion cut diamonds all set in 18k yellow gold. Oval shaped ruby gemstone weighing
Category

21st Century and Contemporary British Art Deco Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18K Gold Ring Natural Ruby Cluster Ring July Birthstone Ring
By Oshi Jewels
Located in Bangkok, TH
Brilliant Ruby ring in 14k or 18k Solid gold featured with a natural sparkly Ruby Gemstone. This
Category

21st Century and Contemporary Thai Modern Fashion Rings

Materials

Ruby, 18k Gold, Rose Gold, White Gold, Yellow Gold

Natural 1.00cts Ruby 0.17cts Diamond Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made, floral-shaped ring is crafted from 18-carat white gold and features a ruby
Category

2010s Indian Band Rings

Materials

Ruby, 18k Gold

Natural Diamond 1.15cts Ruby 6.67cts Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made ring is crafted from 18-carat gold and features a ruby gemstone set with a diamond
Category

2010s American More Rings

Natural Diamond 0.84cts Ruby 2.59cts Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made ring is crafted from 18-carat gold and features an ruby gemstone set with a diamond
Category

2010s American More Rings

18k White Gold Raw Unformed Pink Agate and Round Cut Ruby Cuff Bangle Bracelet
Located in Miami, FL
beauty of agate stones with the vibrant and rich color of ruby gemstones. The bracelet features
Category

Early 2000s Bangles

Materials

Agate, Ruby, White Gold, 18k Gold

This 1.05ct Ruby Burma Solitaire Engagement Ring 18K White Gold
Located in London, GB
collection today. Twisted solitaire band with oval shaped burma ruby gemstone with vivid colour deep stone
Category

21st Century and Contemporary Engagement Rings

Materials

Ruby

Natural 0.51cts Ruby 0.04cts Diamond Ring in 14K Gold
Located in jaipur, IN
stunning, designer-made ring is crafted from 14-carat yellow gold and features a ruby gemstone set within a
Category

2010s Indian Band Rings

Materials

Diamond, Ruby, 14k Gold

Natural 0.65cts Ruby 1.03cts Diamond Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made floral-shaped ring is crafted from 18-carat yellow gold and features a ruby
Category

2010s Indian Band Rings

Materials

Diamond, Ruby, 18k Gold

Natural 0.71cts Ruby Earring in 14k Gold
Located in jaipur, IN
collection. STONE DETAILS : ✦ Gemstone : Ruby ✦ Gemstone Type : Natural ✦ Gemstone Size : 5x3 MM ✦ Gemstone
Category

2010s Indian Stud Earrings

Materials

Ruby, 14k Gold

Natural 7.82cts Ruby Earrings in 14K Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone. The warm glow
Category

21st Century and Contemporary Asian Contemporary Dangle Earrings

Skull 2.00 Carat Bespoke Diamond Red Ruby 18 Karat White Gold Pendant Necklace
By Tresor Paris
Located in London, GB
the finest detail to give an outstanding look and its eyes are made from Ruby gemstones which
Category

2010s British Modern Pendant Necklaces

Materials

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

Natural 7.15cts Ruby 3.25cts Diamond Hoop Earrings in 18 carat Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Hoop Earrings

Materials

Diamond, Ruby, 18k Gold

Diamond Ruby Earrings Hoops, 14 Karat Gold Huggies w Rubies and Diamonds Hinge
By Five Star Jewelry
Located in Austin, TX
millimeters Earring Width: 3.11 millimeters Diamond Number: 30 Diamond Weight: .08 Carat Gemstone: Ruby
Category

21st Century and Contemporary American Modern Hoop Earrings

Materials

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

Tiffany Co. 18K Yellow Gold Ruby and Diamond Ring Size 6.5 #21404
By Tiffany Co.
Located in Washington Depot, CT
& Co. ring features three red ruby gemstones and two round brilliant cut diamonds set in classic 18K
Category

20th Century Contemporary Fashion Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

10K Yellow Gold Star Ruby Signet Ring Size 10 #21180
Located in Washington Depot, CT
oval cabochon cut star ruby gemstone 15.5 mm x 12.1 mm set in classic 10K yellow gold. Width: 20 mm
Category

20th Century Contemporary Signet Rings

Materials

Ruby, Gold, 10k Gold, Yellow Gold

Vintage 1.84 Carat Ruby and Diamond Cluster, circa 1980s
Located in London, GB
ruby. Gemstone: Ruby Stone Shape: Cushion Carat Weight: 0.84 Centre Metal: 18ct White Gold Age: 1980s
Category

Vintage 1980s Unknown Engagement Rings

Materials

Diamond, Ruby, 18k Gold

Vintage Ruby Diamond Ring in 14k Rose Gold
Located in Bloomington, MN
features a 0.25ctw round diamond centerpiece, complemented by 0.09ctw of ruby gemstones, the birthstone for
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, Ruby, Rose Gold

3.35cts Mozambique Ruby Unheated Cut Stone 100% Natural Certified AAA+
Located in Chicago, IL
Manufacture: India Transparency: Transparent Gemstone Type: Ruby Gemstone Form: Cut Shape: Oval Treatment
Category

2010s Indian More Jewelry

Materials

Ruby

Ruby heart shaped solitaire pendant necklace 18k white gold
Located in London, GB
This exquisite Ruby natural gemstone heart cut 0.70ct pendant necklace in 18k white gold 16 inches
Category

21st Century and Contemporary Pendant Necklaces

Materials

Ruby, 18k Gold, White Gold

18K Yellow Gold Square Cut Ruby Sea Wave Ring with Diamonds
By VR Jewels
Located in New York, NY
rings are a perfect choice to fulfill your engagement story. The ruby gemstone give your relationship
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

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

5.8cts Ruby Stud Earrings with Natural Diamonds Accents: Solid 14k Gold, 10mm
Located in Columbus, OH
These beautiful stud earrings feature a pair of 5.78 carat weight round ruby gemstones with natural
Category

21st Century and Contemporary Modern Stud Earrings

Materials

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

14K Rose Gold Baguette Cut Diamond and Ruby Ring
By VR Jewels
Located in New York, NY
anyone on your list. The ruby gemstone give your relationship energy and sensuality. Designed with
Category

21st Century and Contemporary American Modern Cluster Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold, Gold

18k Rose Gold Pave Diamond with 1 Ruby Band Ring
Located in Boca Raton, FL
Gold Gemstone Details: This ring features 1 Ruby Gemstone, weighing approximately 0.04 carats. Diamond
Category

21st Century and Contemporary Unknown Modern Band Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Rose Gold

Beauvince Bailey Ring (2.48 ct Diamonds Rubies) in White Gold
By Beauvince Jewelry
Located in New York, NY
is a work of art with its shapes, colors and patterns.  Gemstones Type: Ruby  Gemstones Shape: Oval
Category

2010s Contemporary Cocktail Rings

Materials

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

Natural 0.78cts Ruby and 0.21cts Diamond Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made ring is crafted from 18-carat white gold and features a ruby gemstone set within a
Category

2010s Indian Band Rings

Materials

Diamond, Ruby, 18k Gold

Pretty Red Ruby Stud Earrings w Earth Mined Diamonds in Solid 14K White Gold
Located in Columbus, OH
These beautiful stud earrings feature a pair of 0.27 carat weight round ruby gemstones with a halo
Category

21st Century and Contemporary Modern Stud Earrings

Materials

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

Mozambique Ruby 0.95Cts Cut Stone Unheated 100% Natural Certified
Located in Chicago, IL
Gemstone Type: Ruby Gemstone Form: Cut Shape: Pear Treatment: None (No Enhancement), Unheated Natural/Lab
Category

2010s Indian More Jewelry

Materials

Ruby

Natural 5.6Cts Ruby 1.44cts Diamond Dangle Earrings in 18k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Dangle Earrings

Materials

Diamond, Ruby, 18k Gold

Natural 5.71cts Ruby 0.7cts Diamond Stud Earrings in 18k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Stud Earrings

Materials

Diamond, Ruby, 18k Gold

Natural 2.43cts Ruby 0.7cts Diamond Dangle Earrings in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Dangle Earrings

Materials

Diamond, Ruby, 14k Gold

Natural 2.94cts Ruby 0.47cts Diamond Stud Earrings in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Stud Earrings

Materials

Diamond, Ruby, 14k Gold

Natural 6.12cts Ruby 1.65cts Diamond Dangle Earrings in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone set with a
Category

21st Century and Contemporary Indian Art Deco Dangle Earrings

Materials

Diamond, Ruby, 14k Gold

14K Gold Ring Natural Ruby Cluster Ring July Birthstone Ring
By Oshi Jewels
Located in Bangkok, TH
Cancer sign Ring Brilliant Ruby ring in 14k Solid gold featured with a natural sparkly Ruby Gemstone
Category

21st Century and Contemporary Thai Modern Fashion Rings

Materials

Ruby, 14k Gold, Rose Gold, White Gold, Yellow Gold

Mozambique Ruby 1.60 cts Purplish Red 100% Natural IGI Certified Red Ruby Cut
Located in Chicago, IL
worn everyday Additional information: Gemstone Type: Ruby Gemstone Shape: Pear Gemstone Color: Red
Category

2010s Indian More Jewelry

Materials

Ruby

Diamond Ruby Clip on Wedding Earrings for Women in 14k Solid White Gold
By VR Jewels
Located in New York, NY
stunning pair of earrings suitable for any occasion to complete your outfit. Ruby gemstone improves mental
Category

21st Century and Contemporary American Art Deco Clip-on Earrings

Materials

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

Natural 0.98cts Ruby Diamond 0.28cts Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made Ring is crafted from 18-carat gold and features an RUBY gemstone set with a halo
Category

2010s Indian Fashion Rings

Materials

Diamond, Emerald, 18k Gold

Handmade Real Ruby Flower Dangle Drop Earrings in Sterling Silver Gift for Her
Located in New York, NY
and adorned with dazzling ruby gemstone which enhances confidence and improves leadership qualities
Category

21st Century and Contemporary American Art Deco Dangle Earrings

Materials

Ruby, Silver, Sterling Silver

18kt Solid Yellow Gold 207.68 Carat TW Ruby Bracelet with 7.72 CTW Diamonds
By VR Jewels
Located in New York, NY
length. Ruby gemstone improves mental strength. Designed with perfect oval cut rubies, some of which
Category

21st Century and Contemporary American Contemporary Modern Bracelets

Materials

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

VR Jewels Oval Ruby Halo Diamond Stud Earrings in 14k Solid Yellow Gold
By VR Jewels
Located in New York, NY
stunning pair of earrings suitable for any occasion to complete your outfit. Ruby gemstone improves mental
Category

21st Century and Contemporary American Contemporary Stud Earrings

Materials

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

Dancing Ruby Rectangles Ring, Ruby and Diamond, 14K Yellow Gold, Artistic
By Five Star Jewelry
Located in Austin, TX
Colorless) Gemstone: Red Ruby Gemstone Color: Rich Red/Pink Rectangle Width: 3.80 millimeters / .15 inches
Category

2010s American Modern Fashion Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Minimal Mosaic Diamond Ruby Square Stacking Ring in 18K Yellow Gold Settings
By VR Jewels
Located in New York, NY
. Ruby gemstone helps to improve energy and sensuality. Designed with square cut ruby and diamonds that
Category

21st Century and Contemporary American Art Deco Cluster Rings

Materials

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

Genuine Octagon Cut Halo Diamond Ruby Ring in 14k Solid Yellow Gold
By VR Jewels
Located in New York, NY
carats and diamonds of 0.2 carat. The gorgeous handcrafted ring goes with every style. Ruby gemstone
Category

21st Century and Contemporary American Contemporary Bridal Rings

Materials

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

Statement Diamond and 6.93ct Ruby Pushback Stud Earrings in 14k Solid Rose Gold
By VR Jewels
Located in New York, NY
earrings suitable for any occasion to complete your outfit. Ruby gemstone brings power, wealth and
Category

21st Century and Contemporary American Art Deco Dangle Earrings

Materials

Diamond, Ruby, Gold, 14k Gold, Rose Gold

Natural 7.15cts Ruby Earrings in 18K Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone. The warm glow
Category

21st Century and Contemporary Asian Contemporary Stud Earrings

Natural 2.94cts Ruby Earrings in 14K Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone. The warm glow
Category

21st Century and Contemporary Asian Contemporary Stud Earrings

Natural 30.46cts Ruby Earrings in 18K Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 18-carat gold and features a ruby gemstone. The warm glow
Category

21st Century and Contemporary Asian Contemporary Drop Earrings

Natural 7.08cts Ruby 0.80cts Diamond Earring in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a ruby gemstone set with a
Category

2010s Indian Stud Earrings

Materials

Diamond, Ruby, 14k Gold

Natural 8.45cts Ruby 2.26cts Diamond Earring in 14k Gold
Located in jaipur, IN
stunning, designer-made Earring is crafted from 14-carat gold and features a RUBY gemstone set with a
Category

2010s Indian Stud Earrings

Materials

Diamond, Ruby, 14k Gold

Natural 3.01cts Ruby Diamond 1.48cts Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made Ring is crafted from 18-carat gold and features a RUBY gemstone set with a diamond
Category

2010s Indian Fashion Rings

Materials

Diamond, Ruby, 18k Gold

Ruby diamond earrings 14KT gold Halo ruby studs
Located in Boca Raton, FL
Luxurious wine color ruby earrings with small diamonds around in elegant halo style, screw backs
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Ruby, Gold, 14k Gold

Silvorra 1.6 Ct Natural Ruby Stackable Silver Bangle Bracelet for New Year Gift
Located in New York, NY
row of 36 vibrant, square-cut ruby gemstones. Each ruby measures 2x2 mm, with a collective weight of
Category

21st Century and Contemporary American Art Nouveau Bangles

Materials

Ruby, Silver, Sterling Silver

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Ruby Gemstone For Sale on 1stDibs

Find the exact ruby gemstone you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and yellow gold. Our collection of these items for sale includes 2845 vintage editions and 5923 modern creations to choose from as well. You’re likely to find the perfect ruby gemstone among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. Creating a ruby gemstone has been a part of the legacy of many jewelers, but those produced by Bochic, VR Jewels and Unbranded are consistently popular. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and brilliant cut cut versions available here, too. When shopping for a ruby gemstone, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Ruby Gemstone?

The price for a ruby gemstone starts at $1 and tops out at $6,500,000 with these rings, on average, selling for $3,007.

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.