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Ruby Jewelry

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Gemstone: Ruby
Emerald Ruby Diamond Vintage Style Dragonfly Brooch in 14K Yellow Gold
Located in Bangkok, TH
A colorful antique Victorian inspired dragonfly brooch decorated with an array of colored gemstones across the front including emeralds, rubies and twinkling rose cut diamonds with a...
Category

21st Century and Contemporary Thai Art Deco Ruby Jewelry

Materials

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

White Diamond Ruby Blue Sapphire Topaz Aquamarine White Gold "Peacock" Earrings
Located in Naples, IT
For any problems related to some materials contained in the items that do not allow shipping, please contact the seller with a private message to solve the problem. We can ship every...
Category

21st Century and Contemporary Italian Art Nouveau Ruby Jewelry

Materials

Aquamarine, Diamond, White Diamond, Ruby, Sapphire, Blue Sapphire, Topaz...

LB Exclusive 14K White Gold Ruby Heart Ring
Located in Southampton, PA
This LB Exclusive ring is crafted from 14K white gold and set with rubies that amount to 0.25 carats. The ring weighs 2.5 grams, boasting band thickness of 2 mm and top height of 2 m...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 14k Gold, White Gold

Pave`Diamond and Ruby Drop Earrings
Located in Nantucket, MA
Pave`-set diamond balls and earring posts with round, brilliant cut diamonds with faceted pink rubies. Set in sterling silver with 18K gold posts for pierced ears. The fine jewelry...
Category

Late 20th Century Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Sterling Silver

Set in 18K Gold, 1.92 carats natural Mozambique Ruby & Diamonds Engagement Ring
Located in Hong Kong, HK
A very gorgeous and beautiful, modern style, Ruby & Black Enamel Engagement Ring set in 18K Rose Gold & Diamonds. The weight of the Oval shaped Ruby is 1.92 carats. The Ruby is compl...
Category

21st Century and Contemporary Indian Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Natural Ruby and Diamond Art Deco Style Two Stone Ring in Solid 9K Yellow Gold
Located in Bangkok, TH
A fantastic two stone ruby ring features two square shaped red rubies, flanked by six diamonds accents. Beautifully crafted in yellow gold with delicate milgrain and engravings. A da...
Category

21st Century and Contemporary Thai Edwardian Ruby Jewelry

Materials

Ruby, Diamond, Yellow Gold, 9k Gold

14K Gold, 3.50 Carat Diamond & Ruby Cocktail Ring
Located in Miami, FL
Crafted from luxurious 14K yellow gold, this captivating cocktail ring features a vibrant 1.50 carat natural round-cut Burma ruby, exuding rich allure. Surrounding the ruby are dazzl...
Category

21st Century and Contemporary European Art Nouveau Ruby Jewelry

Materials

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

0.67 Carat Ruby and 0.14cts Diamond Rosette Ring in 14K Gold – Certified Luxury
Located in Sant Josep de sa Talaia, IB
European Size: 15 American Size:7.25 Gemstones: - Natural Ruby. - Strong color play. - Cut: Brilliant. - Weight: 0.67 carats. - Measurements: 5.30 x 2.10 mm. Natural Diamonds: - 1...
Category

21st Century and Contemporary Spanish Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

14K 11.35ctw Ruby Tennis Bracelet 14K Yellow Gold Featuring 11.35 Carat Pear
Located in Holtsville, NY
Experience the elegance and luxury of this stunning 14K Yellow Gold Tennis Bracelet, featuring 11.35 carats of beautiful pear modified brilliant rubies. Perfect for special occasions...
Category

2010s American Artist Ruby Jewelry

Materials

Ruby, 14k Gold, Yellow Gold

14K Ruby & Diamond Pendant Necklace Ruby 0.34ct & Diamond 0.12ct
Located in Holtsville, NY
Elevate your jewelry collection with this stunning 14K ruby and diamond pendant necklace. Expertly crafted with 14K yellow gold and 18K yellow gold accents, this exquisite piece feat...
Category

2010s American Artist Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

14K Ruby & Diamond Floral Drop Earrings 14K Yellow Gold 0.47 ct
Located in Holtsville, NY
Enhance your elegance with these stunning 14K Yellow Gold Floral Drop Earrings, featuring vibrant rubies and sparkling diamonds. Perfect for special occasions or adding a touch of lu...
Category

2010s American Artist Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Important Antique Marquise Ruby and Diamond Bracelet 12 Carats
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP All Gemstones are Natural Rubies = 5.28 Carats Cut: Marquise Diamonds = 6.82 Carats Color: F-H, Clarity: VVS-SI Metal: 14K White...
Category

Mid-20th Century Art Deco Ruby Jewelry

Materials

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

Edwardian Ruby Diamond Yellow Gold Ring
Located in Mount Kisco, NY
Three vibrant rose cut rubies are the feature of this fine Edwardian period eighteen karat 18k yellow gold ring. It's beautiful antique setting includes four .01 carat diamonds accen...
Category

Early 1900s British Edwardian Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Vintage Circa 1980s 18k Gold Natural Diamond And Ruby Decorated Ring
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 7.6 grams. Totally is diamond 0.10 ct. The diamond is has H color and vs clarity. Totally is ruby 0.22 ct. Ring size is US 6.5 We can make an...
Category

1980s European Retro Vintage Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Natural Ruby Pearl Heart Ribbon Vintage Style Dangle Earrings in Solid 9K Gold
Located in Bangkok, TH
Each earring is adorned with red rubies and white pearls, boasting a heart-shaped design symbolizing love and affection. Adorning the top of each heart is a bow encrusted with white ...
Category

21st Century and Contemporary Thai Edwardian Ruby Jewelry

Materials

Pearl, Ruby, 9k Gold, Yellow Gold

Vintage Art Deco Diamond Ruby Ring 18k Yellow Gold Platinum Small Square Sz 6
Located in Torrance, CA
Finely detailed vintage Art Deco era diamond & ruby ring crafted in 18k yellow gold and 900 platinum (circa 1920s to 1930s). One small 2.5mm ruby adorns the center, accented with ...
Category

Early 20th Century Unknown Art Deco Ruby Jewelry

Materials

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

Rare Vintage Cartier Red Ruby Ellipse Oval Cut 18k Gold Bypass Split Ring 48 4.5
Located in Birmingham, GB
Vintage Cartier Oval Cut Red Ruby 18k Yellow Gold Split Bypass Ring. Stunning yellow gold ring set with 2 fine deep red oval cut rubies. Fine jewellery houses like Cartier only use ...
Category

1990s French Ruby Jewelry

Materials

Ruby, Gold, 18k Gold, Yellow Gold

BUCCELLATI Aquamarine Diamond Ruby 18k Yellow Gold Ring
Located in New York, NY
This exquisite vintage Gianmaria Buccellati cocktail ring is crafted in 18k brushed and textured yellow gold with white gold accents. This ring is set with a faceted oval 7.0mm x 10....
Category

1990s Ruby Jewelry

Materials

Aquamarine, Diamond, Ruby, Yellow Gold

SIZE!!! NO RESERVE! 5.91 Carat Ruby Double Eternity Band - 14K Yellow Gold
Located in Ramat Gan, IL
This ring is definitely a show stopper and will draw attention wherever you go! A great gift for yourself or your loved one - a heirloom piece to treasure forever! Ring Size: ?? EU ...
Category

2010s Israeli Art Deco Ruby Jewelry

Materials

Ruby, 14k Gold, Yellow Gold

14K 5.74ct Ruby & Diamond Cocktail Ring Size 6.75 Diamond 0.06ct & Ruby 5.74ct
Located in Holtsville, NY
Presenting a luxurious 14K yellow gold cocktail ring, featuring a stunning 5.74 carat oval cabochon ruby, accentuated by sparkling diamonds. This exquisite piece combines timeless el...
Category

2010s American Artist Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

French Art Deco 1930s Platinum Diamond and Ruby Stylised Bow Brooch
Located in Staines-Upon-Thames, GB
An Art Deco platinum, diamond, and ruby brooch, comprising one larger transitional cut diamond, thirty-two rose cut diamonds, and twelve baguette cut rubies, set in platinum, with pl...
Category

1930s Art Deco Vintage Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Bochic “Orient” Ruby, Sapphire & South Sea Earrings Set In 18K Gold & Silver
Located in New York, NY
Bochic “Orient” Ruby, Sapphire & South Sea Earrings Set In 18K Gold & Silver Natural Red Ruby - 8 Carats Oval Shapes Natural Multi Color Sapphires From Sri Lanka - 1 Carats Round ...
Category

21st Century and Contemporary Thai Baroque Ruby Jewelry

Materials

South Sea Pearl, Ruby, Sapphire, 18k Gold, Gold Plate, Silver

Stambolian 18K Yellow White Gold Diamonds Pink Sapphire and Ruby Flower Ring
Located in Boca Raton, FL
Stambolian 18K Yellow White Gold Diamonds Pink Sapphire and Ruby Flower Ring This stunning flower ring from the Stambolian "Enchanted Garden" collection is crafted in solid 18k gold...
Category

21st Century and Contemporary American Modern Ruby Jewelry

Materials

Pink Sapphire, Ruby, White Diamond, Diamond, Yellow Gold, White Gold, 18...

Aletto Brothers Invisibly-Set Ruby Diamond Earrings
Located in Palm Beach, FL
Aletto Brothers domed clip earrings handcrafted in platinum, featuring invisibly-set step-cut natural rubies weighing 40 total carats, surrounded by bezel-set round brilliant-cut dia...
Category

21st Century and Contemporary American Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Ruby and Diamond Earrings Studded in 18 Karat Rose Gold
Located in Jaipur, Rajasthan
An exclusive pair of earrings with 14 rose-cut rubies (3.85 carats), 238 round brilliant cut diamond (1.17 carats) studded in 18K rose gold (7.37 grams) with a simple pull-push mecha...
Category

21st Century and Contemporary Indian Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Rose Gold

NO RESERVE! 2.31Ct Ruby 14k Yellow Gold Earrings
Located in Ramat Gan, IL
Center Natural Ruby: Weight: 2.31 cttw (pair)/10 stones Color: Red Shape: Pear No indications of treatment were detected Size: 13.2 mm Item ships from Israeli Diamonds Exchange, cu...
Category

2010s Israeli Art Deco Ruby Jewelry

Materials

Ruby, 14k Gold, Yellow Gold

TIFFANY & Co. Platinum 3mm Half Circle Diamond Ruby Band Ring 4
Located in Los Angeles, CA
TIFFANY & Co. Platinum 3mm Half Circle Diamond Ruby Band Ring 4 Metal: Platinum Size: 4 Band Width: 3mm Diamond: 4 round brilliant diamonds, total carat weight .18 Ruby: 5 round ...
Category

2010s American Ruby Jewelry

Materials

Diamond, Ruby, Platinum

18k White Gold Ruby Cts 4.15 Diamond Tassel Earrings
Located in Hong Kong, HK
Adorned with 2 oval rubies totaling 4.15 carats, these tassel earrings are surrounded by delicate diamond petals, creating a mesmerizing floral motif. Cascading from these petals a...
Category

21st Century and Contemporary Hong Kong Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Blue Topaz Diamond Ruby Art Deco Style Engagement Ring in 18K white Gold
Located in Bangkok, TH
A well balanced Art Deco inspired ring that has a central approx. 4.5 carats oval shaped aquamarine with French cut ruby and shimmering diamonds on either side. This gorgeous ring wo...
Category

21st Century and Contemporary Thai Art Deco Ruby Jewelry

Materials

Diamond, Ruby, Topaz, Blue Topaz, 18k Gold, White Gold

14 Karat Yellow Gold Ruby and Diamond Ring Size 6 #17427
Located in Washington Depot, CT
14 Karat Yellow Gold Ruby and Diamond Ring Size 6 This lovely ring features three marquis cut natural rubies (6 mm x 3 mm) and eight round brilliant cut diamonds set in classic 14K ...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Antique Victorian 18K Yellow Gold 1.58tgw Sapphire, Diamond and Ruby Ring
Located in Staines-Upon-Thames, GB
A yellow gold, sapphire, diamond and ruby ring, comprising five cushion shaped sapphires, five old mine cut diamonds and five cushion shaped rubies, set in 18 karat yellow gold, to a...
Category

1890s Victorian Antique Ruby Jewelry

Materials

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

18 Karat White Gold, Diamonds, Pink Sapphire, Ruby and Tsavorite Flower Bracelet
Located in Mayfair, London, GB
Step into a world of delight and magic, where flowers burst into bloom in a spectacular display of colourful gemstones and floral splendour. Inspired by vibrant African print, this c...
Category

2010s British Contemporary Ruby Jewelry

Materials

Diamond, White Diamond, Ruby, Sapphire, Pink Sapphire, Tsavorite, 18k Go...

Unique 0.86ct Rubies and Diamonds Fancy-Colored Ring in 18k White Gold - AIG
Located in רמת גן, IL
Unique 0.86ct Rubies and Diamonds Fancy-Colored Ring in 18k White Gold - AIG Certified Embrace timeless elegance with this stunning 18k white gold fancy-colored ring, featuring a ca...
Category

2010s Israeli Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Exquisite Art Deco Style & One of a Kind Ring w/ 1.02ct Rubies and Diamonds
Located in רמת גן, IL
Exquisite Art Deco Style and One of a Kind Ring with 1.02ct Rubies and Diamonds Fancy-Colored Ring in 18k Rose Gold - AIG Certified Indulge in the timeless elegance of this exquisit...
Category

2010s Israeli Ruby Jewelry

Materials

Diamond, Ruby

18 Karat White Gold, Pink Sapphire, Ruby and Rubellite Flower Pendant and Brooch
Located in Mayfair, London, GB
Enchanted Garden Collection. Step into a world of delight and magic, where flowers burst into bloom in a spectacular display of colourful gemstones and floral splendour. Inspired by ...
Category

2010s Romantic Ruby Jewelry

Materials

Rubelite, Ruby, Sapphire, Pink Sapphire, 18k Gold, White Gold

Coral, White Stones, Rubies, Onyx, Rose Gold and Silver Necklace
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). PS: THIS POLICY IS NOT APPLICABLE ...
Category

2010s Italian Retro Ruby Jewelry

Materials

Coral, Onyx, Ruby, 9k Gold, Rose Gold, Silver

Platinum Ruby & Diamond Ring - Round 1.92ctw
Located in Greensboro, NC
Size: Please contact us for sizing information. Metal Content: Platinum Stone Information Natural Ruby Treatment: Heating Carat(s): 1.54ct Cut: Round Color: Pinkish Red Natural D...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Platinum

20th Century Fine Pearl Diamonds Rubies 18 Karat Yellow gold Flake Ring
Located in Poitiers, FR
Ring in 18 Karats yellow gold, eagle head hallmark. Charming antique ring, the top of the setting represents a flake centered on a fine half-pearl surrounded by 4 round rubies and 8 ...
Category

Early 20th Century French Belle Époque Ruby Jewelry

Materials

Diamond, White Diamond, Pearl, Natural Pearl, Ruby, Yellow Gold

Beautiful Ruby Claddagh Ring in Solid 10K Yellow Gold Traditional Irish Ring
Located in Columbus, OH
This beautiful claddagh ring features a 0.47 carat ruby gemstone set in solid 10K gold. A Claddagh ring is a traditional Irish ring in which a heart represents love, the crown stands...
Category

2010s American Modern Ruby Jewelry

Materials

Ruby, Gold, 10k Gold, Yellow Gold

Stunning 0.62ct Rubies and Diamonds Halo Ring in 14k Rose Gold - IGI Certified
Located in רמת גן, IL
Stunning 0.62ct Rubies and Diamonds Halo Ring in 14k Rose Gold - IGI Certified This exquisite 14k rose gold halo ring features a captivating 0.25-carat round diamond at its center. ...
Category

2010s Israeli Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Rose Gold

Coral Jasper Zoisite Rubies 9 Karat Yellow Gold Chain Necklace
Located in Marcianise, IT
Discover the vibrant charm of this unique necklace, expertly crafted with 9-karat yellow gold and adorned with a stunning selection of barrel-shaped gemstones. The necklace showcases...
Category

1990s European Artisan Ruby Jewelry

Materials

Coral, Ruby, Jasper, Yellow Gold, 9k Gold

2ct Ruby Pendant w Earth Mined Diamonds in Solid 14k Yellow Gold Oval 9x7mm
Located in Columbus, OH
This beautiful pendant features a 1.94 carat oval ruby gemstone with natural earth mined diamonds in solid 14k gold. This pendant can be a lovely July birthstone gift for your loved ...
Category

2010s American Modern Ruby Jewelry

Materials

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

5.20 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.01 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.44 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.45 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

1.91 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

4.61 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.77 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.20 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

2.15 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

Vintage 0.20ct Ruby Cufflinks, c.1970s
Located in London, GB
This sophisticated pair of vintage cufflinks hail from 1970s France. crafted in 18 carat yellow gold these cufflinks feature a rope design that sits around the cuff with a hinged bar...
Category

1970s Unknown Vintage Ruby Jewelry

Materials

Ruby, 18k Gold

2.04 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

1.98 Ct Ruby Pear Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

An 18 Carat Gold Ring with a Heart Shaped Ruby
Located in Amsterdam, NL
An 18 carat yellow gold ring set with a natural Thai heated heart shaped, pink-red Ruby (1.04 carat). weight: 5.6 g ring size: 15.75 mm / 5 US dimensions: 8 x 8 mm
Category

2010s Dutch Ruby Jewelry

Materials

Ruby, Gold, 18k Gold

5.71 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

5.57 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

5.18 Ct Ruby Round Loose Gemstone
Located in Fort Lee, NJ
An exquisite red color birthstone for July, believed to convey a status of power & wealth. Explore vibrant collection of Emerald, Ruby & Sapphires in our store available as a loose ...
Category

2010s Malagasy Ruby Jewelry

Materials

Ruby

Vintage and Antique Ruby Jewelry for Sale on 1stDibs

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.

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