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Ruby Jewelry

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Period: 19th Century
Gemstone: Ruby
Pearl chain with lock set with ruby and diamonds 18k yellow gold and silver
Located in The Hague, ZH
18k yellow gold with silver clasp set with ruby ​​and rose diamonds on a three-strand pearl beaded necklace, with gold centers set with ruby, 85 cm long detailed description: the l...
Category

1880s Dutch Early Victorian Antique Ruby Jewelry

Materials

Diamond, Pearl, Ruby, 18k Gold, Yellow Gold, Silver

Victorian Ruby and Diamond Cluster Ring
Located in London, GB
Here we have a truly beautiful ruby and diamond cluster ring. At the centre of the face there is a lovely mid to dark red ruby which is surrounded by ten well matched old cut diamond...
Category

19th Century Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Victorian Ruby and Rose Cut Diamond 18 Carat Gold Band
Located in Chipping Campden, GB
This classic band is modelled in 18carat gold and the Ruby which is set within the band. The diamonds measure approx 10pts and the ruby measures 30pts. Size: N 1/2 or 7 Width: 6.5...
Category

1890s British Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold

Victorian Ruby Diamond 18k Yellow Gold Ring
Located in Beverly Hills, CA
One Victorian Ruby Diamond 18k Yellow Gold Ring. Featuring one oval and two marquise cut rubies with a total weight of approximately 1.20 carats. Accented by six rose cut diamonds wi...
Category

1880s Victorian Antique Ruby Jewelry

Materials

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

Circa 1870s 8k Gold Ottoman Natural Rose Cut Diamond Ruby Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 13.8 grams. Totally is rose cut diamond about 4 carat. The diamond is has H-I-J-K-L-M-Brown and s1-s2-s3-Pique. Totally is ruby about 0.40 car...
Category

1870s Turkish Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold

Antique 15ct Gold Victorian Ruby & Seed Pearl Daisy Cluster Ring
Located in Brighton, GB
Antique Daisy Cluster Ring 15ct Gold Tested Circa 1880 Pretty, Victorian cluster ring. Set with an oval, faceted, natural ruby centre & a cluster of natural, milky seed pearls ma...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, Gold, 15k Gold

Tiffany Antique 19th Century Gold, Diamond, Ruby and Sapphire Cufflinks, c. 1890
Located in Aspen, CO
18K Tiffany & Co. antique cufflinks, back to back, bezel set, one with a center diamond and bright blue sapphire, the other with a diamond and a vivid red ruby. The long oval cuffli...
Category

1890s Late Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Sapphire, Gold, 18k Gold

Antique 15ct Gold Victorian Ruby & Pearl Ring With Ornate Gold Work
Located in Brighton, GB
Antique Pearl & Ruby Ring 15ct Gold Tested Circa 1880 Pretty, Victorian gold ring. Set with a beautiful, natural pearl centre & two gorgeous coloured rubies. The ring features fa...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, Gold, 15k Gold

Victorian Ruby and Diamond Horseshoe and Riding Crop Locket
Located in London, GB
Here we have a fabulous gem set locket dating back to the Victorian period. This circular piece has been crafted from a rich 18ct yellow gold and showcases a rose cut diamond set hor...
Category

Late 19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Victorian turquoise, ruby and diamond cluster ring, English, 1861.
Located in London, GB
Victorian turquoise, ruby and diamond cluster ring. Set to centre with a cushion shape old cut natural unenhanced Burmese ruby in a open back claw setting with an approximate weight ...
Category

1860s English Antique Ruby Jewelry

Materials

Diamond, Ruby, Turquoise, Yellow Gold

French 19th Century Ruby Diamond 18 Karat Rose Gold You and Me Ring
Located in Poitiers, FR
Ring in 18 karat rose gold, horse head hallmark. This magnificent antique ring features an engraved fleur-de-lis motif at the base of the band, holding a brilliant-cut antique diamon...
Category

Late 19th Century French Napoleon III Antique Ruby Jewelry

Materials

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

Antique Thai Siam 19th Century Gold Princely Gem-Set Cluster Ring Ruby Emerald
Located in London, GB
A rare late 19th century gem-set princely gold cluster ring made in Siam (Thailand). This gorgeous and colourful gem-set cluster ring is intricately crafted in high-karat gold, by t...
Category

19th Century Thai Antique Ruby Jewelry

Materials

Diamond, Ruby, Emerald, Gold

Antique 18ct Gold Victorian Ruby & Pearl Ring With Pretty Carved Shoulders
Located in Brighton, GB
Antique Victorian Ring 18ct Gold Hallmarked Birmingham 1898 Gorgeous Victorian Ring. Set with Four Natural Seed Pearls, Two Natural Rubies & Pretty Carved Shoulders. Width 5.7...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, Gold, 18k Gold

Antique 15ct Gold Victorian Amethyst Diamond Opal Ruby and Emerald Acrostic Ring
Located in Brighton, GB
Antique Adore Ring 15ct Gold Circa 1880 Acrostic rings became popular throughout the Victorian period. The Adore ring being one of the romantic gifts typically given in the earl...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Amethyst, Diamond, Emerald, Opal, Ruby, Gold, 15k Gold

Antique Opal, Ruby and Diamond Butterfly Brooch, Circa 1890
Located in London, GB
An antique opal, ruby and diamond butterfly brooch, with opals set in the wings and abdomen, a faceted ruby set in the thorax, cabochon rubies set in the eyes and rose-cut diamonds s...
Category

1890s British Victorian Antique Ruby Jewelry

Materials

Diamond, Opal, Ruby, Gold, Silver

Late Victorian Diamond and Synthetic Ruby 14k Yellow Gold Ring
Located in Beverly Hills, CA
One Late Victorian Diamond and Synthetic Ruby 14k Yellow Gold Ring. Featuring one rose cut diamond weighing approximately 0.50 carat, graded S-T color, I1 clarity, and one rose cut s...
Category

1890s Late Victorian Antique Ruby Jewelry

Materials

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

Victorian Cabochon Ruby Diamond 14 Karat Yellow Gold Foliate Antique Ring
Located in Philadelphia, PA
Centering an oval-shaped ruby cabochon weighing approximately 1.24 carats Transparent medium purplish red in color - prong set east to west Prongs are stylized foliate motifs exten...
Category

1830s Victorian Antique Ruby Jewelry

Materials

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

Victorian Ruby and Diamond Coiled Snake Bracelet
Located in London, GB
Here we have a remarkable coiled snake bracelet. This antique piece has been crafted from a rich 18ct yellow gold and showcases exceptional attention to detail. Most notably, the lay...
Category

19th Century Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Victorian Ruby and Diamond Drop Necklace
Located in London, GB
This is a wonderful Victorian era ruby and diamond drop necklace. The pendant's open frame consists of three central oval cut rubies which are surrounded by multiple round faceted na...
Category

Mid-19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Victorian Ruby and Diamond Ring in 14K Yellow Gold, circa 1890s
Located in Beverly Hills, CA
Ruby and diamond ring in 14K yellow gold featuring two oval shaped rubies totaling 0.70 ct. with two single cut diamond accents. With British hallmarks, original Victorian piece. D...
Category

19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold, 14k Gold

Antique Victorian 18ct Split Pearl Ruby Cross Ring
Located in London, GB
Our unique early Victorian ring features a ruby cross alongside natural split pearls, all set in an 18ct gold closed back setting. This stunning piece is one of a kind and perfect fo...
Category

19th Century English Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, 18k Gold

15ct Victorian Brooch Ruby Set Hearts At Ends Seed Pearls Diamond set Heart Drop
Located in Brighton, GB
Antique Gold Heart Brooch 15ct Gold Stamped Circa 1880 Fabulous Victorian Gold Brooch. Set with Rubies, Diamonds & Pearls. Features Two Little Ruby Set Hearts at Either End & Di...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Pearl, Ruby, 15k Gold

Antique 15ct Gold Victorian Ruby & Diamond Ring
Located in Brighton, GB
Antique Ring 15ct Gold Stamped Hallmarked Chester 1885 Beautiful, Victorian ring. Almost belt/buckle like- with its screw effect shoulders, mounting the ruby & diamond set plate...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, 15k Gold

Antique Thai No Heat Ruby Diamond Silver 18k Yellow Gold Cluster Ring
Located in Beverly Hills, CA
One Antique Thai No Heat Ruby Diamond Silver 18k Yellow Gold Cluster Ring. Featuring one oval mixed cut ruby weighing approximately 1.00 carat, accompanied with GIA #2235177995 stati...
Category

1880s Antique Ruby Jewelry

Materials

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

Victorian 1.40ct Diamond and Ruby Five Stone Ring, c.1880s
Located in London, GB
A trio of old cut diamonds are set between a pair of vibrant rubies in this Victorian five stone ring. The central diamond is 0.60 carat with the two at either end weighing 0.40 cara...
Category

1880s Unknown Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Victorian 1.00ct Ruby and Diamond Cluster Ring, c.1880s
Located in London, GB
This Victorian Ruby & Diamond Ring is an exquisite piece, showcasing a deep red ruby with Thailand origin. The enchanting natural ruby is a 1.00 carat oval cut stone and is claw set ...
Category

1880s Unknown Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 15k Gold, Silver

Georgian ruby and diamond coronet cluster ring, circa 1800.
Located in London, GB
Georgian ruby and diamond coronet cluster ring. Set to centre with a cushion shape old cut ruby in a closed back grain setting with an approximate weight of 0.50 carats, encircled by...
Category

1880s English Antique Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold, Silver

Antique 18ct Gold Victorian Ruby & Diamond Carved Ring
Located in Brighton, GB
Antique Ruby & Diamond Carved Ring 18ct Gold Stamped Victorian Circa 1880 Fabulous Victorian Hand Carved Ring with Scroll Detailing Set with 3 Gorgeous Rubies & Brilliant Cut ...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Antique butterfly gold /silver brooch with sapphire, rose diamonds and ruby
Located in AMSTERDAM, NL
This nice antique butterfly brooch is made of 14 kt yellow gold and silver. The brooch is richly decorated with rose cut diamonds of in total approx....
Category

1890s French Edwardian Antique Ruby Jewelry

Materials

Diamond, Ruby, Sapphire, Gold, 14k Gold, Silver

Antique Victorian Ruby & Diamond Ring 18K Gold Cluster Navette Design - 1886
Located in London, GB
We are delighted to offer this superb Victorian 18ct gold ruby and diamond navette ring made in Birmingham in 1886 by G.Bro. Distinctly Victorian and distinguished from contemporar...
Category

19th Century Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

French Victorian Ruby Pearl Rose Cut Diamond Bar Brooch
Located in Los Angeles, CA
French Victorian ruby, pearl, and rose-cut diamond gold and silver bar brooch circa 1890. * ABOUT THIS ITEM:P-DJ121i Scroll down for specific det...
Category

1890s French Victorian Antique Ruby Jewelry

Materials

Diamond, Pearl, Ruby, 18k Gold, Silver

Victorian 1.00ct Ruby and Diamond Cluster bangle, c.1880s
Located in London, GB
The beautiful Victorian bangle features a vibrant 1.00 carat ruby at its centre surrounded by a cluster of old cut diamonds. The ruby is an old cut stone and is completely natural an...
Category

1880s Unknown Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 15k Gold

Victorian Sapphire Ruby and Diamond Ring
Located in London, GB
This is a fabulously colourful Victorian 15ct rose gold sapphire, ruby and diamond ring. Consisting of three connected bands, the first is centrally-set with a sapphire, the second w...
Category

19th Century Antique Ruby Jewelry

Materials

Diamond, Ruby, Sapphire, 15k Gold, Yellow Gold

Antique Victorian 18ct Gold Ruby & Diamond Boat Shaped Ring
Located in Brighton, GB
Ruby & Diamond Ring Beautiful Boat Shaped Ring 18ct Gold Hallmarked Birmingham 1894 UK Size Q & US Size 8 1/2 Can be resized for a small additional fee All of our items are e...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Antique Georgian 18k Yellow Gold Muff Chain Circa 1820
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive, antique early 19th century 18 karat yellow gold muff chain; part of our diverse antique Georgian jewelry collections. Th...
Category

1820s Antique Ruby Jewelry

Materials

Ruby, Yellow Gold

Antique Victorian 14K Yellow Gold Ruby and Rose Cut Diamond Navette Ring
Located in Great Neck, NY
Beautiful Antique Victorian 14K Yellow Gold Ruby and Rose Cut Diamond Navette Ring. This gorgeous navette shield ring has a row of synthetic rubies in the center surrounded by rose c...
Category

1890s Unknown Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold

Antique 15ct Gold Victorian Seed Pearl & Ruby Ring
Located in Brighton, GB
Antique Pearl & Ruby Ring 15ct Gold Stamped Hallmarked Birmingham 1874 Makers Mark W G This exquisite Victorian ring is crafted from 15ct yellow gold and features six lustrous se...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, Gold, 15k Gold

Antique Victorian Heart Shaped 'Dearest' Acrostic Bracelet 14 Karat Rose Gold
Located in Fairfield, CT
This Victorian "Dearest" bracelet is a charming piece of jewelry that embodies the romanticism and the sentimental nature of its era. The bracelet, crafted in 14 karat rose gold, at ...
Category

19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Emerald, Amethyst, Ruby, Blue Sapphire, Topaz, Gold, 14k Gold, ...

Antique 15ct Gold Victorian Ruby, Diamond & Pearl Ring
Located in Brighton, GB
Antique 15ct Gold Ring 15ct Gold Stamped Circa 1880 Beautiful Victorian Ring. Set with Rubies, Diamonds & Seed Pearls. UK Size M 1/2 US...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Pearl, Ruby, Gold, 15k Gold

Moonstone, Ruby and Diamond Bracelet 18k c1870s France
Located in Litchfield, CT
Circa 1870s, 18k/silver, France. This superb example of late 19th-century French jewelry has a dreamy cabochon moonstone bordered by lively diamonds and rubies with two fleur-de-lis ...
Category

1870s French Victorian Antique Ruby Jewelry

Materials

Diamond, Moonstone, Ruby, 18k Gold, Yellow Gold, Silver

Antique 15ct Gold Victorian Ruby & Diamond Fox Riding Crop Stock Pin Brooch
Located in Brighton, GB
Antique Fox Head Stock Pin 15ct Gold Stamped Victorian Circa 1880 This exquisite 15ct gold Victorian stock pin brooch is a true masterpiece. The brooch features a stunning fox hea...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, 15k Gold

13.80 Carat Ruby and 8.20 Carat Diamond 18K Gold Edwardian Earring
Located in New York, NY
Introducing our stunning Antique Diamond and Ruby Earring, a true statement piece that will add a touch of elegance and luxury to any outfit. This earring features a dazzling 13.50-c...
Category

Late 19th Century European Edwardian Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Antique Thai Siam 19th Century Gold Rose Cut Diamond and Ruby Garuda Bird Ring
Located in London, GB
A rare late 19th century gem-set princely gold ring made in Siam (Thailand). The ring takes the form of a mythical winged bird, possibly the Gar...
Category

19th Century Thai Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold

1880 Victorian Hand Engraved Star Set Pearl and Synthetic Ruby Ring
Located in Lexington, KY
This is a lovely Victorian band set in 10K Rose gold adorned with star set rubies and at its center a lovely white seed pearl! This antique three-stone ring features a white seed pea...
Category

1880s Victorian Antique Ruby Jewelry

Materials

Pearl, Ruby, 10k Gold, Rose Gold

MAUBOUSSIN Citrine & Ruby Bow Pin/Brooch 14K gold 95x63MM
Located in Chicago, IL
Vintage exaggerated Bow Pin/brooch measuring approximately 95x63MM and weighing 34.2grams. Inscribed with MAUBOUSSIN and 14K gold trademarks. Bow Pin featuring an emerald cut natural...
Category

Late 19th Century Unknown Retro Antique Ruby Jewelry

Materials

Ruby, Citrine, 14k Gold

Antique Rose Cut Diamond and Ruby Belt Buckle
Located in New York, NY
Antique Rose Cut Diamond and Ruby Belt Buckle Made circa 1850 Approximate measurements: 6"
Category

Mid-19th Century Antique Ruby Jewelry

Materials

Diamond, Ruby, Silver

Antique Diamond Chick bangle, Ruby, Pearl and White Enamel, 12k gold
Located in NEWARK, GB
Words simply cannot express how wonderful this piece is, an antique Diamond Chick bangle hailing from the late Victorian era. Such a rare piece to fin...
Category

19th Century British Victorian Antique Ruby Jewelry

Materials

Diamond, Pearl, Ruby, Gold, Enamel

Antique 18ct Gold Victorian Ruby & Diamond Ring
Located in Brighton, GB
Antique 18ct Gold Ruby & Diamond Ring 18ct Gold Hallmarked Chester 1897 Beautiful Victorian Ring. Set with Three Natural Rubies, Old Cut Diamonds & Pretty Carved Shoulders. Wid...
Category

Late 19th Century English Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Victorian Egyptian Revival Multi-Gem Enamel 18 Karat Yellow Gold Beaded Necklace
Located in Philadelphia, PA
Designed as a beaded multi-gem strand with scarab and bird motif stations Comprised of turquoise, carnelian, and lapis lazuli barrel beads Opaque light blue, medium blue, and transl...
Category

1880s Victorian Antique Ruby Jewelry

Materials

Carnelian, Diamond, Lapis Lazuli, Ruby, Turquoise, Gold, 18k Gold, Yello...

Victorian 2.70 CTW No Heat Burma Ruby Diamond 18 Karat Yellow Gold Ring AGL
Located in Philadelphia, PA
Centering a mixed cushion cut ruby weighing 1.34 carats - transparent medium to deep red Natural Burmese in origin with no indications of heat treatment Prong set and flanked east ...
Category

1890s Victorian Antique Ruby Jewelry

Materials

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

Antique Victorian Ruby Locket Earrings Star Enamel 14k Yellow Gold 1.5" Drops
Located in Torrance, CA
Elegant pair of antique Victorian star drop earrings (circa 1870s to 1880s) crafted in 14k yellow gold. Rich red rubies are estimated at 0.10 ...
Category

Late 19th Century Unknown Victorian Antique Ruby Jewelry

Materials

Ruby, Gold, 14k Gold, Yellow Gold, Enamel

Victorian 2.88 CTW No Heat Burma Ruby Diamond 18 Karat Yellow Gold Band Ring GIA
Located in Philadelphia, PA
Featuring seven graduated cushion-shaped step cut rubies flush set east to west Weighing approximately 2.80 carats total - transparent purplish red in color Natural Burmese in origin...
Category

1870s Victorian Antique Ruby Jewelry

Materials

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

Victorian 3.40 CTW Diamond No Heat Burma Ruby 18 Karat Gold Three Stone Ring GIA
Located in Philadelphia, PA
Centering an old mine cut diamond weighing approximately 1.11 carats - J color with VS2 clarity Prong set and flanked east to west by two prong set cushion cut rubies Weighing appro...
Category

1880s Victorian Antique Ruby Jewelry

Materials

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

Georgian Regard Cluster Ring
Located in London, GB
This is a wonderful 15ct yellow gold Georgian Regard cluster ring. The ring dates back to the late Georgian era. Circa. 1820s and features stunning eng...
Category

1820s Georgian Antique Ruby Jewelry

Materials

Diamond, Emerald, Garnet, Ruby, Gold, Yellow Gold

Victorian Ruby and Pearl Heart Locket Necklace
Located in London, GB
Here we have a romantic ruby and pearl set locket necklace. This antique pendant has been crafted from 18ct yellow gold into the the shape of a lit...
Category

19th Century Antique Ruby Jewelry

Materials

Pearl, Ruby

Van Cleef and Arpels Ruby and Diamond Tie Pin
Located in New York, NY
Van Cleef and Arpels Ruby and Diamond Tie Pin Beautiful Van Cleef and Arpels tie pin with ten round cut diamonds and cabochon ruby. Signed: VCA and numb...
Category

Early 19th Century French Antique Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Victorian Horse and Jockey Diamond Stick Pin
Located in London, GB
This is a Victorian 9ct yellow gold and silver stick pin. The head of the pin features an enamel jockey riding a horse which has been set with rose cut diamonds with ruby eyes. The d...
Category

Late 19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, Yellow Gold, Silver, Enamel

Victorian Ruby and Diamond Heart Brooch
Located in London, GB
Here we have a delightful antique brooch dating back to the Victorian period. This romantic piece has been crafted from 22ct yellow gold into the shape an open love heart. This frame...
Category

19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold, Yellow Gold

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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