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Ruby Jewelry

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Gemstone: Ruby
Oscar Heyman 1.11 Carat Ruby 0.87 Carat Diamond Yellow Gold Ring
Located in Dallas, TX
Gorgeous ruby and diamond ring by designer Oscar Heyman, in 18 karat yellow gold. Size 7 1/4.
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

J.E. Caldwell & Co Retro Ruby Sapphire Puzzle Ring
Located in New York, NY
Unique 18 karat yellow gold retro ruby sapphire puzzle ring by J.E. Caldwell & Co. Amazingly designed and masterfully handcrafted this ring from ca 1945 depicts the alpha-omega symbo...
Category

20th Century Retro Ruby Jewelry

Materials

Ruby, Sapphire, 18k Gold

Invisibly Set Ruby and Diamond Ring
Located in Aspen, CO
Fine natural vivid red rubies are invisibly set in this unusual ring. Fine white brilliant cut diamonds are bead set on both sides to accent the vivid red rubies. There are 9.45 ct...
Category

21st Century and Contemporary Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

2.13 Carat Ruby Set in 18kt Black Gold Unisex Corone Eternity Ring
Located in Florence, IT
This 2.13 Carat Ruby Corone eternity ring is set in 18Kt Black Gold. Unisex it looks fabulous on any finger worn alone or stacked with other rings. An eternity ring from the Coron...
Category

21st Century and Contemporary Artisan Ruby Jewelry

Materials

Ruby, Gold, 18k Gold

Mumtaz Mahal Ring 18kt Yellow & White Gold, Carved Citrine, Topaz, Ruby, Diamond
Located in Melbourne, Vic
The Mumtaz Mahal ring is the Taj Mahal meets William Llewelyn Griffiths’ signature gothic cathedral style in a masterstroke which has created an exceptional heirloom piece the likes ...
Category

2010s Gothic Revival Ruby Jewelry

Materials

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

18K Gold Ring Natural Ruby Cluster Ring July Birthstone Ring
Located in Bangkok, TH
Natural Ruby Cluster Ring is made of 18K solid gold featured with a natural sparkly Ruby Gemstone. Available in three colors of gold: White Gold / Rose Gold / Yellow Gold. Lightweig...
Category

21st Century and Contemporary Modern Ruby Jewelry

Materials

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

Ruby, Emerald, Blue Sapphire and Diamond Elephant Ring Set in 18 Karat Gold
Located in Bangkok, TH
Ruby 0.15 carat, Emerald 0.09 carat, Blue Sapphire 0.12 carat and Diamond 0.05 carat Ring set in 18 Karat Gold Settings Width: 2.1 cm Length: 1.3 cm Ring Size: 57 "Since we first ...
Category

2010s Ruby Jewelry

Materials

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

18 Karat White Gold Hematite Rubies Octagonal Convex Cufflinks
Located in Milano, IT
This elegant pair of cufflinks made in Hematite features a cylindrical toggle and a front face shaped as an octagon with a convex surface and a central ornament made of a cabochon ru...
Category

2010s Ruby Jewelry

Materials

Hematite, Ruby, 18k Gold, White Gold

DiamondTown 1.53 Carat Fine Burmese Ruby and Diamond Cross Pendant in 18k Gold
Located in New York, NY
(DiamondTown) This stunning cross pendant features five oval cut vivid red rubies (total weight 1.53 carats), around a central round diamond. Additional trios of diamonds decoate the...
Category

21st Century and Contemporary Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Antique 19th Century Burma Ruby 7 Carat Diamond Pendant
Located in Chicago, IL
Circa 1870 A very fine example of high Victorian era jewelry, this silver topped 14K gold (front- silver, back – gold) pendant is designed as a flower head centered with a natural un...
Category

Late 19th Century Victorian Antique Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Silver

Cabochon Ruby with Blue Sapphire and Diamond Cross Pendant Set in 18 Karat Gold
Located in Bangkok, TH
Cabochon Ruby 15.10 carats with Blue Sapphire 0.85 carat and Diamond 0.40 carat Cross Pendant set in 18 Karat Gold Settings (chain not included) Width: 3.9 cm Length: 4.3 cm "Sinc...
Category

2010s Ruby Jewelry

Materials

Diamond, Ruby, Blue Sapphire, Gold, 18k Gold

Geometrical Diamond White Gold Designer Pendant
Located in Montreux, CH
White Gold 14K Pendant Diamond 299-RND-2,95-G/VS1A Weight 18,33 grams With a heritage of ancient fine Swiss jewelry traditions, NATKINA is a Geneva based jewellery brand, which cr...
Category

2010s Ruby Jewelry

Materials

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

Ruby with Diamond Ring Set in 18 Karat Rose Gold Settings
Located in Bangkok, TH
Ruby 4.05 carats with Diamond 0.88 carat Ring set in 18 Karat Rose Gold Settings Width: 2.0 cm Length: 1.8 cm Ring Size: 56 "Since we first opened doors in 1980 our store was then...
Category

2010s Ruby Jewelry

Materials

Diamond, Ruby

Georgios Collection 18 Karat Gold Sapphire and Ruby Cross with Granulation work
Located in Astoria, NY
S.Georgios Byzantine Style Cross is handmade from solid 18 Karat Yellow Gold and features 4 Pear Share Rubies total weight of 1,05 Carat and a Sapphire total weight of 0,25 Carat. Th...
Category

2010s Byzantine Ruby Jewelry

Materials

Ruby, Sapphire, Blue Sapphire, Gold, 18k Gold, Yellow Gold

14k Gold Ring with Rubies and Diamonds
Located in Istanbul, TR
14 kt solid gold ring with natural rubies and diamonds. July birthstone. Weight: 1.3 g. Central stone: Natural rubies - 3 pieces Cut: Baguette Weight: approx 0.60 ct. Color: Red Cla...
Category

2010s Modern Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

Burmese Ruby 3.34ct and Diamond Gold Ring, Georgian, ca. 1800
Located in Idar-Oberstein, DE
Beautiful Burmese Ruby and Diamond Gold Ring, Georgian, ca. 1800. The unheated cushion-shaped Burmese ruby, 3.34cts, set within naturalistic trellis work, filled with 16 old-cut dia...
Category

Early 19th Century Georgian Antique Ruby Jewelry

Materials

Diamond, Ruby, Gold

Cartier Diamond Ruby Yellow Gold Band Ring
Located in New York, NY
This classic Cartier ring is crafted in 18k yellow gold and pave-set with brilliant-cut round D-F VVS1-VVS2 diamonds weighing an estimated 1.36 carats and round red rubies weighing a...
Category

1990s Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold

Vhernier Gray Gold and Rubies Ring
Located in Bari, IT
Vhernier Iconic ring in Gray Gold, diamonds 0,63ct And Rubies .78ct
Category

Early 2000s Modern Ruby Jewelry

Materials

Ruby, Gold

14k gold ring with ruby and diamonds
Located in Istanbul, TR
14k gold ring with ruby and diamonds 14 k gold, tested in lab, no hallmark. total weight 4.45 gr Gemstones (all are tested by professional gemmologist) Ruby 1.Oval cabochon cu...
Category

2010s Modern Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

14k Gold Earrings Studs with Rubies and Diamonds
Located in Istanbul, TR
14k gold earrings studs with rubies and diamonds. Removable Jacket Stud Earrings. July birthstone. Different way wearable earrings studs: you can wear as solitaire ruby studs and ...
Category

2010s Modern Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

Ruby with Diamond Pendant Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.68 carats with Diamond 0.05 carat Pendant set in 18 Karat Gold Settings (chain not included) Width: 0.6 cm Length: 1.6 cm Total Weight: 1.18 grams "We first opened doors in...
Category

2010s Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Ruby and Pink Sapphire Flower Ring in 18ct Yellow Gold
Located in Brisbane, AU
18ct yellow gold Custom made to order please contact our designer with your finger size to start the design process Combination of Burmese red rubies and pink sapphires set in 18ct...
Category

2010s Artisan Ruby Jewelry

Materials

Ruby, Pink Sapphire, Yellow Gold

Alex Soldier Sapphire Tourmaline Diamond Topaz Ruby Snail Ring One of a Kind
Located in New York, NY
Alex Soldier uses snails as a reminder to slow down and enjoy life. He has created more than 25 jewel encrusted snails, each unique and one-of-a-kind. It became an instant classic an...
Category

2010s Contemporary Ruby Jewelry

Materials

Diamond, White Diamond, Ruby, Sapphire, Pink Sapphire, Topaz, Tourmaline...

White and Yellow Gold Five Burma Red Ruby Bezel Pendant Necklace
Located in New York, NY
Fourteen karats white and yellow gold necklace pendant Necklace 16" long Each Burma round red ruby measuring from 4 millimeters to 3.5 millimeters Five rubies weighing 1.20 carats ...
Category

2010s Modern Ruby Jewelry

Materials

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

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 5.49 carats with Diamond 0.42 carat Ring set in 18 Karat Gold Settings Width: 1.1 cm Length: 1.1 cm Ring Size: 53 Total Weight: 6.86 grams "We first opened doors in 1980 whe...
Category

2010s Art Deco Ruby Jewelry

Materials

Diamond, Ruby

Georgios Collection 18 Karat Gold Ruby, Sapphire and Emerald Multi-Color Cross
Located in Astoria, NY
This S.Georgios Designer Byzantine Style Cross Pendant Enhancer is handmade from solid 18 Karat Yellow Gold and features 2 Rubies, 4 Emeralds, and 12 Sapphire all total weight of 2,9...
Category

21st Century and Contemporary Byzantine Ruby Jewelry

Materials

Multi-gemstone, Emerald, Ruby, Sapphire, Blue Sapphire, Gold, 18k Gold, ...

18 Karat Yellow Gold Red Ruby Slightly Hammered "Little Hearts" Necklace
Located in Rome, IT
18 Karat Yellow Gold Red Ruby Slightly Hammered "Little Hearts" Necklace A nice necklace handcrafted in 18 karats yellow gold and embellished with a red ruby that fits every outfit d...
Category

2010s Artisan Ruby Jewelry

Materials

Ruby, 18k Gold, Yellow Gold

Granulation Antefix Pendant Necklace with Rock Crystal & Rubys 22Kt Yellow Gold
Located in Athens, GR
Antefix shape pendant necklace handcrafted in 22Kt yellow gold, featuring a hand carved Rock Crystal and three round Rudys. This masterpiece is created using the superb techniques of...
Category

2010s Byzantine Ruby Jewelry

Materials

Crystal, Rock Crystal, Ruby, 22k Gold, Yellow Gold

Ruby with Diamond Ring Set 18 Karat Rose Gold Settings
Located in Bangkok, TH
Ruby 0.79 carat with Ruby 2.58 carats and Diamond 0.51 carat Ring set 18 Karat Rose Gold Settings Width: 1.2 cm Length: 1.9 cm Ring Size: 51 Total Weight: 7.59 grams "We first op...
Category

2010s Art Deco Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Edwardian Pavè Diamond Platinum-Topped 18 Karat Yellow Gold Bird Swallow Charm
Located in Philadelphia, PA
Charm is designed as a swallow mid-flight with spread wings and a split tail. Symbolic of love since they mate for life and are thought to guide sailors home. Pavè set in platinum wi...
Category

1910s Edwardian Vintage Ruby Jewelry

Materials

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

Georgios Collections 18 Karat Yellow Gold Emerald and Diamond Wide Band Ring
Located in Astoria, NY
This S.Georgios designer Band Ring is 18 Karat Yellow Gold and all handmade with Byzantine bead granulation and a unique velvet background finished. This gorgeous band ring features ...
Category

21st Century and Contemporary Byzantine Ruby Jewelry

Materials

Diamond, White Diamond, Blue Diamond, Yellow Diamond, Black Diamond, Bro...

18KT Rose & White Gold Twin Peacocks Pendant with 2.42Ct. Diamonds
Located in New York, NY
The peacocks are symbolic of re-growth and rejuvenation, royalty, respect, honor, and integrity. They are also a symbol of beauty, love, and passion. Cellini NYC presents this twin ...
Category

2010s Contemporary Ruby Jewelry

Materials

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

Cartier Ruby and Diamond Earrings and Ring Set
Located in New York, NY
Cartier Paris ruby and diamond earrings and ring set. The set is created in a rectangular design with oval cut ruby in the center and accented by pave set diamonds. The ear clip earr...
Category

Late 20th Century Artist Ruby Jewelry

Materials

Ruby, Diamond, 18k Gold

Cartier Sapphire Ruby Emerald Cross Pendant Necklace
Located in Los Angeles, CA
Cartier multi gemstone cross pendant featuring sapphires, rubies, and emerald, set in 18 karat yellow gold, suspended from an 18 karat yellow gold 17 inch rope chain. Both pendant an...
Category

1990s Contemporary Ruby Jewelry

Materials

Emerald, Ruby, Sapphire, Gold, 18k Gold

18 Karat Yellow Gold Plate Panther Ruby Onyx Black Enamel 925 Silver Cufflinks
Located in Milano, IT
Silver 925 panther cufflinks 18 karat gold plate embellished by rubies on his eyes and a half sphere in onyx , ears with black enamel. All AVGVSTA jewelry is new and has never been ...
Category

2010s Ruby Jewelry

Materials

Onyx, Ruby, Silver, Enamel, 18k Gold, Gold Plate, Yellow Gold

Sterling Silver Hairy Viking Lapel Pin With Black Helmet and Ruby Eyes
Located in Birmingham, West Midlands
DEAKIN & FRANCIS, Piccadilly Arcade, London Inspired by scandalous Scandinavian Pirates, this Viking Skull lapel pin has been designed to let your wild side stand out! Made from st...
Category

2010s Contemporary Ruby Jewelry

Materials

Ruby, Sterling Silver

Italian Dangle Mother of Pearls Ruby Diamond Cocktail Gold Earrings for Her
Located in Montreux, CH
Earrings White 14K Gold Diamond 258-RND57-1,25-4/5A Diamond 2-RZND57-0,09-4/5A Diamond 2-RND57-0,06-4/5A Ruby 2-29,69 ct Mother of Pearls 24-14,79 ct Weight 16,16 grams It ...
Category

2010s Modern Ruby Jewelry

Materials

Pearl, Ruby, Diamond, Gold

Ruby Opal Pearl and Diamonds 18 Karat Gold Ring
Located in Monte Carlo, MC
A truly elegant one of a kind Ring, A pear shape opal a cabochon ruby as well as a round pearl are delicately placed on both sides of a shank. They seem to defy gravity. The shank i...
Category

21st Century and Contemporary Contemporary Ruby Jewelry

Materials

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

Eye Small Pendant Necklace 18 Karat Yellow Gold Akoya Pearl Ruby Diamond
Located in London, GB
This very unique eye pendant necklace from The Eye collection, it's a perfect everyday talisman. The Eye collection showcases this award winning, fine jewellery designer’s extraordin...
Category

2010s Artisan Ruby Jewelry

Materials

Diamond, Pearl, Ruby, 18k Gold

Heart Shape Cabochon Ruby with Diamond Earrings Set in 18 Karat Gold Settings
Located in Bangkok, TH
Cabochon Ruby 5.69 carats with Diamond 0.81 carat Earrings set in 18 Karat Gold Settings Width: 1.3 cm Length: 1.3 cm "Since we first opened doors in 1980 our store was then situa...
Category

2010s Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Sterling Silver Guilloché Enamel Diamond and Ruby Mirror Case
Located in New York, NY
20th-century sterling silver Guilloché pink enamel mirror case Cabochon rubies weighing 1.16 carats Diamonds weighing 0.15 carats Handmade in Italy The Ocie Minaudiere collection was...
Category

1990s Contemporary Ruby Jewelry

Materials

Ruby, Diamond, Silver, Sterling Silver, Rhodium, Enamel

Pair Platinum Ruby Diamond Earrings
Located in Dallas, TX
With the trademark for Leverington & Company, these exceptional ruby and diamond drop earrings are lovely! The total stated weight of the rubies is 2.87 carats.
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Natural Oval Ruby Gemstone Band Ring Diamond Pave 18k Rose Gold Fine Jewelry
Located in IN
Natural Oval Ruby Gemstone Band Ring Diamond Pave 18k Rose Gold Fine Jewelry Details Stone :- Diamond / Ruby Stone Shape :- Round / Oval Treatment :- Natural Making :- Handmade Ite...
Category

21st Century and Contemporary Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Rose Gold

South-Sea Pearl,Rubies,Sapphires,Diamonds,14 Karat White Gold Ring
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). Beautiful retrò ring in 14 karat ...
Category

1970s Retro Vintage Ruby Jewelry

Materials

Diamond, South Sea Pearl, Ruby, Sapphire, 14k Gold, White Gold

Rubies, Diamonds, 18 Karat White and Yellow Gold Bracelet
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). For any inquiries, please contact...
Category

1970s Retro Vintage Ruby Jewelry

Materials

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

GIA Unheated Mozambique 1.49 Ct Ruby Queen Elizabeth Inspired Engagement PT950
Located in Los Angeles, CA
GIA Certified Unheated Mozambique 1.49 CT Ruby Queen Elizabeth III Engagement Inspired Ring With Natural VVS D Diamonds Set in 950 Platinum Ring Size 7
Category

1940s Late Victorian Vintage Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Georgios Collections 18 Karat Two-Tone Gold Diamond Cross Pendant with Chain
Located in Astoria, NY
This S.Georgios designer 18 Karat Yellow Gold cross pendant necklace and chain is handmade with microscopically decorated Byzantine-style granulation work and is finished with a uniq...
Category

21st Century and Contemporary Byzantine Ruby Jewelry

Materials

Diamond, White Diamond, Blue Diamond, Yellow Diamond, Pink Diamond, Blac...

Ruby and Diamond Ring Set in 18 Karat Gold by Kavant & Sharart
Located in Bangkok, TH
Ruby 1.13 carats and Diamond 0.30 carat Ring set in 18 Karat Gold Settings Width: 2.2 cm Length: 2.0 cm Ring Size: 55 Total Weight: 6.58 grams "We first opened doors in 1980 whe...
Category

2010s Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Cartier Sapphire Ruby Emerald Cross Pendant Necklace
Located in Los Angeles, CA
Cartier multi gemstone cross pendant featuring sapphires, rubies, and emerald, set in 18 karat yellow gold, suspended from an 18 karat yellow gold 17 inch rope chain. Both pendant an...
Category

1990s Contemporary Ruby Jewelry

Materials

Emerald, Ruby, Sapphire, Gold, 18k Gold

Ruby with Diamond Ring Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 1.70 carats with Diamond 0.22 carat Ring set in 18 Karat Gold Settings Width: 1.1 cm Length: 1.1 cm Ring Size: 54 Total Weight: 5.01 grams "We first opened doors in 1980 whe...
Category

2010s Art Deco Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold

Faye Kim Platinum Ruby and Diamond Halo Engagement Ring
Located in Westport, CT
Faye Kim Platinum Ruby and Diamond Halo Engagement Ring. Lively and intense, the ruby is complemented by a micro pave diamond halo and shank. Handcrafted in Platinum. Unique, be...
Category

2010s Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Bronze Bangle with Cabochon Ruby and Labradorite
Located in Milan, IT
Unique piece hand made in bronze with cabochon star ruby and labradorite natural stone. 4cm hight . All Giulia Colussi jewelry is new and has never been previously owned or worn. ...
Category

2010s Artisan Ruby Jewelry

Materials

Labradorite, Ruby, Bronze

18 Karat Yellow Gold Dangle Earrings Italian Emerald Ruby
Located in Bussolengo, Verona
These earrings are one of the first pieces of the new color line. They can be combined with some rings available in this shop (as you see in one of the images of this item) They are ...
Category

2010s Artisan Ruby Jewelry

Materials

Emerald, Ruby, Yellow Gold

Georgios Collection 18 Karat Gold Emerald, Sapphire, Rubies Multi-Color Cross
Located in Astoria, NY
This S.Georgios Designer Byzantine Style Cross Pendant Enhancer is handmade from solid 18 Karat Yellow Gold and features 4 Rubies, 4 Sapphires, and an Emerald center with all total w...
Category

21st Century and Contemporary Byzantine Ruby Jewelry

Materials

Emerald, Multi-gemstone, Ruby, Sapphire, Blue Sapphire, Gold, 18k Gold, ...

Stephen Webster Ruby and 18 Carat Rose Gold Hammerhead Bangle
Located in London, GB
Inspired by the hammerhead shark and its ever-changing ocean home, this 18 karat rose gold statement cuff is a tribute to the wonderful creatures brought to life by Jules Verne in ‘T...
Category

2010s Contemporary Ruby Jewelry

Materials

Ruby, Rose Gold, Gold, 18k Gold

Ruby and Diamond Tassel
Located in New York, NY
An important Ruby and Diamond Tassel Necklace 175 carats of fine Ruby and 8.38 carats of white round brilliant diamonds. 30 inch removable diamond by yard chain, set in white gol...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby

GRS Pigeon Blood 0.86 Carat Burmese No Heat Ruby and Diamond Ring 18 Karat Gold
Located in Bangkok, TH
A brand new 0.86 carat Burmese ruby ring mounted with diamonds in 18 Karat gold. The ruby weighs 0.86 carat and is certified by Gem Research Swisslab (GRS) as natural, no heat, and '...
Category

2010s Ruby Jewelry

Materials

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

Alternate Ruby and Diamond Band Ring in 18ct White Gold
Located in Yorkshire, West Yorkshire
This lovely contemporary ring is the perfect style to be worn on its own or as a stackable ring. A beautiful half eternity ring with a difference! It sparkles across the whole face o...
Category

21st Century and Contemporary Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Vintage and Antique Ruby Jewelry

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 that 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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