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18.52 Carats Burmese No-Heat Ruby Natural Sugarloaf For Top Fine Jewelry Gem
Located in Jaipur, RJ
18.52 Carats Burmese No-Heat Ruby Natural Sugarloaf For Top Fine Jewelry Gem Weight: 18.52 Carats
Category

21st Century and Contemporary Burmese Art Deco Loose Gemstones

Materials

Ruby

Certified 7.51 Carats Ruby Octagon Square Faceted Cut Stone No Heat Natural Gem
Located in Jaipur, RJ
As we are auction partners at Gemfields, we have sourced these rubies from winning auctions and had
Category

21st Century and Contemporary Mozambican Art Deco Loose Gemstones

Materials

Ruby

11.03 Carats Burmese No-Heat Ruby Natural Oval Cut stone For Fine Jewelry Gem
Located in Jaipur, RJ
11.03 Carats Burmese No-Heat Ruby Natural Oval Cut stone For Fine Jewelry Gem Weight: 11.03 Carats
Category

21st Century and Contemporary Burmese Art Deco Loose Gemstones

Materials

Ruby

2.05 Carat Natural Loose Light Pink Spinel Cushion Shape Gemstone From Tanzania
Located in Peshawar, PK
, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire
Category

21st Century and Contemporary Tanzanian Arts and Crafts Loose Gemstones

Materials

Spinel

Emerald-Cut Ruby Cts 1.31 and Blue Sapphire Cts 2.16 and Emerald Cts 0.92 Loose
Located in Hong Kong, HK
sapphire, 0.92 cts. emerald, and 1.31 cts. ruby, all perfectly cut in an emerald cut. Each gemstone in
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Ruby, Blue Sapphire, Emerald

8.71 Carats Burmese No-Heat Ruby Natural Oval Cut Stone For Top Fine Jewelry Gem
Located in Jaipur, RJ
8.71 Carats Burmese No-Heat Ruby Natural Oval Cut Stone For Top Fine Jewelry Gem Weight: 8.71
Category

21st Century and Contemporary Burmese Art Deco Loose Gemstones

Materials

Ruby

15.61 Carat Burmese No-Heat Ruby Natural Oval Cut Stone For Top Fine Jewelry Gem
Located in Jaipur, RJ
15.61 Carat Burmese No-Heat Ruby Natural Oval Cut Stone For Top Fine Jewelry Gem Weight: 15.61
Category

21st Century and Contemporary Burmese Art Deco Loose Gemstones

Materials

Ruby

Set of Emerald, Ruby, Sapphire Bands Made in 18k Yellow Gold
Located in Webster, NY
Beautiful set of 18k yellow gold Sapphire, Emerald, & Ruby gemstone bands. Gemstone: Sapphire
Category

21st Century and Contemporary Band Rings

Materials

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

Vintage 0.25 Carat Ruby Gem Tulip Brooch Pin 18k Gold
Located in Miami, FL
with Ruby gemstones makes this brooch very creative. The Ruby gemstones weight approx 0.25 carat. The
Category

Vintage 1970s Brooches

Materials

Ruby, 18k Gold

GIA 1.09ct Unheated Burma Ruby (6.80 x 5.05 x 4.23 mm)
Located in Singapore, SG
Myanmar (Burma) rubies are universally recognized as the world's finest and most desirable
Category

21st Century and Contemporary Singaporean Art Deco Loose Gemstones

Materials

Emerald

TJD 0.23 Carat Natural Ruby and Diamond 14 Karat Yellow Gold Halo Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone engagement ring Handcrafted in 14 karat yellow Gold. The
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Ruby oval shaped pendant necklace 18k white gold
Located in London, GB
This stunning ruby gemstone oval shaped 4.85ct certified gemstone pendant necklace features a
Category

21st Century and Contemporary Pendant Necklaces

Materials

Ruby, White Gold

TJD 0.35 Carat Natural Ruby and Diamond 14 Karat White Gold Halo Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone engagement ring Handcrafted in 14 karat white gold. The 26
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, White Gold

TJD 0.35 Carat Ruby and 0.25 Carat Diamond 14 Karat White Gold Band Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone band ring Handcrafted in 14 karat white Gold. The 8 round
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, White Gold

TJD 0.35 Carat Ruby and 0.10 Carat Diamond 14 Karat Yellow Gold Band Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone engagement ring Handcrafted in 14 karat white Gold. The 29
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Vintage 2.00 Carat Diamonds Ruby Engagement Ring
Located in Miami, FL
diamonds in both sides with beautiful Ruby gemstones surrounding the diamonds and a center oval Ruby
Category

Vintage 1980s Engagement Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

TJD 0.28 Carat Ruby and 0.10 Carat Diamond 14 Karat Yellow Gold Solitaire Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone engagement ring Handcrafted in 14 karat yellow Gold. The
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

TJD 0.19 Carat Ruby and 0.25 Carat Diamond 14 Karat Yellow Gold Fashion Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone engagement ring Handcrafted in 14 karat yellow Gold. The
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

TJD 0.13 Carat Ruby and 0.10 Carat Diamond 14 Karat Yellow Gold 2 Row Band Ring
By TJD
Located in New York, NY
This beautiful diamond and ruby gemstone band ring Handcrafted in 14 karat white Gold. The 25 round
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Ruby Gold Cufflinks Set 1940S
Located in Geneva, CH
is adorned with a stunning ruby gemstone, which is expertly “Star-set” for added elegance and charm
Category

Vintage 1940s Cufflinks

Materials

Ruby, Yellow Gold, Gold

Retro Ruby Two Color Gold Curb Link Bracelet
Located in New York, NY
Retro Italian made 18k two tone gold curb link bracelet, adorned with ruby gemstones. Bracelet is
Category

20th Century Italian Retro Link Bracelets

Materials

Ruby, Gold

Vintage 4.50 Carat Ruby and Diamonds Swivel Lighting Strike Design Clip Earrings
Located in Miami, FL
weight of Ruby gemstones and approx a 1.50 carat Diamond total weight. The earrings measure 34mm height
Category

Vintage 1980s Clip-on Earrings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Genuine Ruby Bolo Bracelet Sterling Silver
Located in Webster, SD
7 oval cut, 4x5mm ruby gemstones. The bracelet is adjustable from 5 to 9 inches. Marks: 925, STS
Category

2010s Unknown Modern Modern Bracelets

Materials

Ruby, Sterling Silver

Natural 1.95cts Ruby Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made ring is crafted from 18-carat yellow gold and features a RUBY gemstone. The warm
Category

2010s Indian Band Rings

Materials

Ruby, 18k Gold

Natural 3.09cts Ruby Round Earring in 14k Gold
Located in jaipur, IN
stunning, designer-made, STUD-SHAPED earring is crafted from 14-carat gold and features a RUBY gemstone
Category

2010s Indian Stud Earrings

Materials

Ruby, 14k Gold

Star Ruby Rose Gold Ring 14K Custom Hammered Gemstone Wide Band 3.75 Carat Ruby
By Five Star Jewelry
Located in Austin, TX
Rose Gold Gemstone: Star Ruby Gemstone Weight: 3.75 Carats Ring Size: 8.5 (can be resized per request
Category

21st Century and Contemporary American Artisan Solitaire Rings

Materials

Ruby, Star Ruby, Gold

Victorian Ruby Solitaire Cocktail Ring 1.50ct Antique 14K Gold Original 1880 s
Located in Dearborn, MI
Features a Lab Grown 1.50ct Old Round Cut Ruby Gemstone Trademarked Ring Over $260 in Gold Value Ruby is
Category

Antique 1880s Solitaire Rings

Materials

Ruby, 14k Gold, Yellow Gold

Certified natural fancy color diamonds sterling silver tear drop ruby earrings
Located in Delhi, DL
earth mined Gemstone- Ruby Gemstone origin- lab grown
Category

2010s Indian Edwardian Drop Earrings

Materials

Diamond, Ruby, Sterling Silver

Natural 0.74cts Ruby Earring 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

2010s Indian Stud Earrings

Materials

Ruby, 14k Gold

Certified Natural Diamond Ruby Band 14k White Gold cocktail Ring
Located in Delhi, DL
Varmile Metal Hallmark- Yes Gemstone name- Diamond and Ruby Gemstone type- Natural real Gemstone
Category

21st Century and Contemporary Indian Romantic Engagement Rings

Materials

Emerald, Blue Sapphire, Diamond, Ruby, Gold Plate, White Gold, Vermeil, ...

Natural 3.62cts Ruby Earring in 18k Gold
Located in jaipur, IN
stunning, designer-made, earring is crafted from 18-carat white gold and features a ruby gemstone. The warm
Category

2010s Indian Dangle Earrings

Materials

Ruby, 18k Gold

Natural 1.24cts Ruby 0.21cts Diamond Studs Earrings in 14k Gold
Located in jaipur, IN
stunning, designer-made, RADIANT-SHAPED earring is crafted from 14-carat gold and features a RUBY gemstone
Category

2010s Indian Stud Earrings

Materials

Diamond, Ruby, Gold, 14k Gold

Ruby Diamond Engagement Ring 1cttw Halo 14K White Gold Brand New July Birthstone
Located in Dearborn, MI
Round Ruby Gemstone Ruby is the July Birthstone Classic Halo Setting 100% Natural Ruby Gemstone
Category

2010s Engagement Rings

Materials

Diamond, Ruby, 14k Gold, White Gold

Natural 15.75cts Rainbow Sapphire Ruby Earring in 14k Gold
Located in jaipur, IN
stunning, designer-made earring is crafted from 14-carat gold and features a Rainbow Sapphire Ruby gemstone
Category

2010s Indian Stud Earrings

Materials

Ruby, Sapphire, 14k Gold

Natural Ruby Diamond Bracelet in 18k Gold
Located in jaipur, IN
stunning, designer-made Bracelet is crafted from 18-carat gold and features a ruby gemstone set with a halo
Category

2010s Indian Modern Bracelets

Materials

Diamond, Ruby, 18k Gold

Natural 3.03cts 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

2010s Indian Stud Earrings

Materials

Ruby, 14k Gold

Cushion-Oval No Heat Burma Carats 5.46 with Certificate
Located in Hong Kong, HK
shipping back to us for the ring making. Unheated rubies are sought after especially if they are from
Category

21st Century and Contemporary Hong Kong Contemporary Loose Gemstones

Materials

Ruby

Certified Natural Pave Diamond Ruby Sterling silver bridal wedding necklace
Located in Delhi, DL
a tint of grey Diamond origin- Natural Diamond weight- 8.30ct Gemstone- Ruby Gemstone color- Plum
Category

2010s Indian Art Deco Choker Necklaces

Materials

Diamond, Ruby, Sterling Silver

Spinel and Ruby natural gemstone ring, 14K White Gold, GFCO, Certified, size 7US
By GRALJEWELRY
Located in Daugavpils, LV
Natural Spinel and Ruby gemstone 14K White Gold Ring Spinel certified GFCO Ring have certificate
Category

2010s Tanzanian Cocktail Rings

Materials

Ruby, Spinel, 14k Gold

GIA Emerald Natural Diamond 1.60ct F/VS1 Loose GIA XX $2000 Credit, Inscription
By GIA
Located in San Diego, CA
Exquisite loose 1.60ct emerald-cut diamond certified by GIA with laser inscription number 1175388529. F Color and VS1 Clarity with no fluorescence. The diamond has excellent polish a...
Category

2010s American Modern Loose Gemstones

Materials

Green Sapphire, Emerald, Multi-gemstone, Rubelite, Ruby, Sapphire, Blue ...

18K Gold Heart Charm Dual-Link Bracelet with Ruby Accents
Located in Ridgefield, CT
charm. The bracelet is accentuated by a series of finely crafted rings, each studded with mini ruby
Category

21st Century and Contemporary Brazilian Modernist Chain Bracelets

Materials

Ruby, Gold, 18k Gold, Yellow Gold

Diamond Ruby Eternity Band 14K Rose Gold 1ct Diamond Gemstone Eternity Ring
By Five Star Jewelry
Located in Austin, TX
) Diamond Color: G (excellent, near colorless) Diamond Shape: Baguette Gemstone: Ruby Gemstone Weight: 0.06
Category

21st Century and Contemporary American Contemporary Band Rings

Materials

Diamond, Ruby, Rose Gold

Natural 8.33cts Ruby Ring in 18k Gold
Located in jaipur, IN
stunning, designer-made Ring is crafted from 18-carat gold and features a RUBY gemstone. The warm glow of
Category

2010s Indian Band Rings

Materials

Ruby, 18k Gold

Ruby Diamond Halo Single Stud Earring .60ct 14K Yellow Gold Pear Cut
Located in Dearborn, MI
Genuine Natural Pear Cut Ruby Gemstone This is for a Single Earring, Not a Pair. We Do Not Have a Match
Category

2010s Stud Earrings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Certified 2.06 Carats No heat Sri-Lanka Pink Sapphire Oval Cutstone Natural gem
Located in Jaipur, RJ
Certified 2.06 Carats No heat Sri-Lanka Pink Sapphire Oval Cutstone Natural gem Weight: 2.06 Carats Size: 7.78x6.21x5.01 MM Pieces: 1 Shape: Faceted Oval cut stone
Category

21st Century and Contemporary Sri Lankan Art Deco Loose Gemstones

Materials

Ruby, Pink Sapphire

Designer Ruby Cluster Diamond Ring in 18K Solid Yellow Gold
By VR Jewels
Located in New York, NY
gift for anyone on your list. The ruby gemstone give your relationship energy and sensuality
Category

21st Century and Contemporary American Artist Cocktail Rings

Materials

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

Certified Real Natural AAA Ruby Diamond Sterling silver white gold-plated ring
Located in Delhi, DL
diamonds Gemstone name- Ruby Gemstone type- Natural real Metal- Silver Metal purity- 925 sterling silver
Category

21st Century and Contemporary Indian Art Nouveau Engagement Rings

Materials

Ruby, Diamond, Gold Plate, Sterling Silver

Ruby Bead Necklace 22K Yellow Gold
Located in Montgomery, AL
Inches Accented by the following gemstones 113 - 5 to 5.5mm Cabochon Cut Natural Ruby Gemstone Beads
Category

20th Century Contemporary Beaded Necklaces

Materials

Ruby, Gold, 22k Gold, Yellow Gold

Vintage Ruby Ring 14 Karat Yellow Gold Flower Design Cluster
Located in Brooklyn, NY
Gemstone All stones are natural Ruby Finger size 7.5 14k Yellow Gold approx 3.20 grams Pre-Owned in
Category

Late 20th Century Cluster Rings

Materials

Ruby, 14k Gold, Yellow Gold

Certified Real Natural AAA Ruby Sterling silver white gold-plated wedding ring
Located in Delhi, DL
Royal Floral ruby 925 silver ring consists of: Gross weight- 5.100grams Gemstone name- Ruby
Category

21st Century and Contemporary Indian Art Nouveau Engagement Rings

Materials

Ruby, Gold Plate, White Gold, Sterling Silver

Classic Natural rose cut diamond Burma ruby 925 silver adjustable bow ring
Located in Delhi, DL
color- Tinted grey Metal- Silver Metal purity- 925 silver or sterling silver Gemstone- Ruby Gemstone
Category

2010s Indian Retro Wedding Rings

Materials

Diamond, Ruby, Silver, Sterling Silver

Natural Burma ruby solid 14K white gold ring eternity band
Located in Delhi, DL
beautiful ring consists of: Metal- Solid Gold Metal purity- 14K Metal color- White gold Gemstone- Ruby
Category

2010s Indian Contemporary Band Rings

Materials

Ruby, 14k Gold, White Gold

Vintage Retro Era 14KT Yellow Gold Aquamarine And Ruby Ribbon Pin
Located in New York, NY
sophistication. Embedded with genuine 13.30CT-TW aquamarines and 1.90CT-TW ruby gemstones, it's the perfect
Category

Vintage 1950s American Retro Brooches

Materials

Aquamarine, Ruby, Yellow Gold

Certified Natural Ruby Sterling silver Studs white gold-plated Earring Studs
Located in Delhi, DL
Royal Floral ruby 925 silver Earring consists of: Gross weight- 3.600grams Gemstone name- Ruby
Category

2010s Indian Art Deco Stud Earrings

Materials

Ruby, Silver, Sterling Silver

Moonstone and Ruby natural gemstone Ring, 14 Karat White Gold, 7US, Certified
By GRALJEWELRY
Located in Daugavpils, LV
Natural Moonstone and Ruby gemstone 14 Karat White Gold Ring Laboratory label certificate for the
Category

2010s Malagasy Cocktail Rings

Materials

Moonstone, Ruby, 14k Gold, White Gold

Victorian Ruby Solitaire Ring .55ct Round Sz 8 Original 1860 s Antique 10K Gold
Located in Dearborn, MI
Yellow Gold Features a Genuine Natural .55ct Round Ruby Gemstone Center Ruby Entices Rich Bold Color
Category

Antique 1860s Victorian Cocktail Rings

Materials

Ruby, 10k Gold, Yellow Gold

Flower Pearl Ruby Ring, Yellow Gold, Estate Statement Ring Pearl Flower
By Five Star Jewelry
Located in Austin, TX
details for this gorgeous ring are listed below: Metal Quality: 10K Yellow Gold Gemstone: Pearl, Ruby
Category

Vintage 1970s American Contemporary Fashion Rings

Materials

Pearl, Ruby, 10k Gold, Yellow Gold, Gold

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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.