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Ruby More Necklaces

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Gemstone:Ruby
Ruby Necklace Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 6.99 carats Necklace set in 18 Karat Gold Settings Width: 0.4 cm Length: 46.0 cm Total Weight: 3.04 grams "We first opened doors in 1980 when it was then situated in the vic...
Category

2010s Contemporary Ruby More Necklaces

Materials

Ruby, Gold, 18k Gold

Mozambique 24.21 Carat Ruby Diamond Pendant Necklace
Located in Richmond, BC
Glamorous large ruby diamond pendant necklace. Intense fiery red, high luster, cushion faceted, 24.21 carats natural ruby mounted in high profile with yellow gold eight knife prongs,...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

Lalaounis Double Rams Head Gem Set 18 Karat Gold Necklace
Located in New York, NY
Beautifully designed and wonderfully handcrafted by the iconic Greek jeweler Ilias Lalaounis this chic and most wearable necklace features 2 rams heads with finely textured gold set ...
Category

1970s Vintage Ruby More Necklaces

Materials

Emerald, Ruby, Sapphire, 18k Gold

Buccellati 18K and Ruby Leaf Necklace
Located in Hudson, NY
Authentic Buccellati 18 karat yellow gold leaf motif necklace set with 16 cabochon ruby stones weighing approximately 9.5 carats. Signed Buccellati, Italy 18K. The necklace is 15 1/2...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

Ruby, 18k Gold

Diamond Ruby Emerald Sapphire Amethyst Tourmaline Yellow Gold Pendant Necklace
Located in Naples, IT
This Pendant is made of 14K Yellow Gold. This Pendant has 0.55 Carats of White Brilliant Cut Diamonds. This Pendant has a 0.18 Carats Ruby. This Pendant has 0.16 Carats of Blue Sapph...
Category

21st Century and Contemporary Art Nouveau Ruby More Necklaces

Materials

Amethyst, Diamond, White Diamond, Emerald, Peridot, Ruby, Sapphire, Blue...

One of a Kind Tutti Frutti 61.00 Carat Emerald Ruby Diamond Necklace 18K
Located in Brunswick, ME
A guaranteed statement piece , this exquisite Emerald Ruby Diamond 18K Gold Tutti Frutti Garden One of a Kind Necklace Primary Stones: 100% Natural Ruby Shape or Cut Rubies: Mix-Cut ...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

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

Vintage 1.37 Ct Ruby & 0.60 Ct Diamond 18kt Gold Pendant
Located in Miami, FL
Offered here is a vintage 18kt yellow gold pendant centered with a natural earth mined vivid red ruby from Thailand weighing 1.37 ct, excellent quality, framed with 12 natural earth...
Category

1980s Contemporary Vintage Ruby More Necklaces

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Fine Deep Red Ruby 1.17ct Oval Cut 18k Yellow Gold Solitaire Pendant Necklace
Located in Bristol, GB
Fine Deep Red Ruby 18 Karat Yellow Gold Solitaire Pendant Necklace. Stunning 1.17 carat ruby with a fine deep red colour and excellent oval cut. Also has very good clarity with only...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

Ruby, Gold, Yellow Gold, 18k Gold

Ruby and Diamond Flower Pendant
Located in Great Neck, NY
This beautiful pendant is made from 1.5 grams of 14 karat white gold. The flower shape is made from 6 rubies totaling 0.83 carats with VS2, G color diamonds for the center and as a h...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 14k Gold, White Gold

14 Karat White Gold Ruby Diamond Art Deco Style Pendant Necklace
Located in La Jolla, CA
This elegant necklace is crafted of 14 karat white gold with a art deco inspired pendant that features 1 ruby that weighs 0.23 carats and 18 round brilliant cut diamonds that weigh a...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, White Gold

Mystery Set Rectangular Ruby and Diamond Pendant, 18 Karat White Gold
Located in New York, NY
A Mystery Set Rectangular Ruby and Diamond Pendant in 18K White Gold. Ruby Weight: 4.88 carats, Diamond Weight: 0.78 carats. Total Weight: 13.70 grams.
Category

20th Century Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Leon Mege Reversible Pendant with Carved Moonstone, Rubies, Micro Pave Diamonds
Located in New York, NY
Custom-made reversible "Shambhala" pendant with hand-carved moonstone, 3.30 carat of natural rubies and 208 ideal cut diamonds. The face of a mysterious source of Ajna energy will ke...
Category

2010s Contemporary Ruby More Necklaces

Materials

Diamond, White Diamond, Moonstone, Ruby, Platinum, Silver

Ruby Necklace Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 11.03 carats Necklace set in 18 Karat Gold Settings Width: 0.4 cm Length: 47.0 cm Total Weight: 3.92 grams "We first opened doors in 1980 when it was then situated in the vi...
Category

2010s Contemporary Ruby More Necklaces

Materials

Ruby, Gold, 18k Gold

Vintage French Ruby and Sapphire Clover Pendant Set in 18k Yellow Gold
Located in London, GB
A beautiful vintage French ruby and sapphire clover pendant set in 18k yellow gold. The pendant is designed as a clover on top of an openwork double X motif. Each of the four clover...
Category

1970s Retro Vintage Ruby More Necklaces

Materials

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

Ruby Oval and White Diamond Necklace in 18k Yellow Gold
Located in Los Angeles, CA
Gorgeous bright red ruby ovals and good quality white diamond marquise shapes and rounds. Total of 16 rubies. Handmade in 18k yellow gold. Exact weights are unknown because the ne...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

White Diamond, Ruby, Yellow Gold

Eye Pendant Necklace with Ruby
Located in Geneva, CH
Eye pendant in 18kt white gold set with one cabochon cut ruby 1.00 cts and 20 diamonds 0.32 cts       
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Sapphire & Ruby Pendant Necklace
Located in Geneva, CH
Pendant in 18kt white gold set with 80 pink sapphires 7.15 cts, 11 rubies 1.35 cts and 164 diamonds 1.98 cts        
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

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

Lalaounis Greece Frosted Crystal Ruby Diamond Gold Necklace
Located in New York, NY
18k gold necklace by Greek designer Ilias Lalaounis, set with frosted crystal, ruby cabochons and approx. 1.30ctw in H/VS diamonds. Necklace is 16.25" long, widest center point is 22...
Category

20th Century Ruby More Necklaces

Materials

Crystal, Diamond, Ruby, Gold

Ethonica Halo Collection Ruby and Diamond Tennis Necklace in 18 Karat Gold
Located in New York, NY
This beautiful necklace features a reddish, round-cut ruby accented by a halo of round brilliant-cut diamonds set in 18K white gold. The necklace consisting of thirty-seven ruby grad...
Category

2010s Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

White Diamond Long Snake Necklace Sterling Silver Ruby Eyes Chain J Dauphin
Located in Los Angeles, CA
White Diamond Long Snake Necklace Sterling Silver Ruby Eyes Italian Chain J Dauphin J DAUPHIN "Transformation" Hand made in Los Angeles Available for immediate delivery Historica...
Category

2010s Victorian Ruby More Necklaces

Materials

Ruby, White Diamond, Sterling Silver, Silver

Diamond Ruby Pendant Necklace, White Gold, Round Ruby and Diamond Halo
Located in Austin, TX
The diamond halo on this necklace contrasts beautifully with the vibrant ruby in the center. It's perfectly stunning on its own or as part of a neck stack. The details for this beaut...
Category

2010s Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 14k Gold, White Gold

Diamond Ruby Platinum Long Necklace
Located in New York, NY
A modern long necklace, set with round brilliant-cut and pear shaped diamond and ruby, mounted in platinum. ruby weighing approx. 18.14 cts. diamond weighing approx. 15.58 cts. Pea...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, Platinum

Ruby and Diamond Floral Drop Pendant 18 Karat
Located in Brunswick, ME
Beautiful design ruby diamond floral pendant in 18K white and yellow gold The Pendant is centered with 6 genuine pear cut rubies approx. 2.50 carat and adorned with 45 natural diamon...
Category

Early 2000s Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

Red Coral White Diamond Ruby Emerald Aquamarine Yellow Gold Butterfly Pendant
Located in Naples, IT
For any problems related to some materials contained in the items that do not allow shipping and require specific documents that require a particular period, please contact the selle...
Category

21st Century and Contemporary Art Nouveau Ruby More Necklaces

Materials

Aquamarine, Coral, Diamond, White Diamond, Emerald, Ruby, 9k Gold, Yello...

Designer Effy's 14ct Oval Shape Natural Ruby & 11 Ct Diamond Necklace 14KY Gold
By Effy
Located in New York, NY
Designer Effy's 14Ct Oval Shape Natural Ruby & 11 Ct Diamond Necklace 14KY Goldng of 29 stones of Emerald .Each oval Oval shape Ruby is surrounded by brilliant cut diamonds . The ...
Category

20th Century Ruby More Necklaces

Materials

Ruby, Diamond, 14k Gold

White Diamond Heart Shape Pendent Set in 18 Karat White Gold Made in Italy
Located in London, GB
This pretty little pendent will be made to order for you in our 150 year old workshop South of Rome, Italy. A domed heart is set with White VVS-G diamonds totalling approx. 0.35ct an...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

White Diamond, Emerald, Ruby, Blue Sapphire, Pink Sapphire, 18k Gold, Wh...

Opal Ruby Snake Chain Pendant Necklace Silver J Dauphin
Located in Los Angeles, CA
Opal Ruby Snake Chain Pendant Necklace Silver J Dauphin J DAUPHIN "A new life" Historically, serpents and snakes represent fertility or a creative life force. As snakes shed their...
Category

2010s Contemporary Ruby More Necklaces

Materials

Opal, Ruby, Sterling Silver

GCS Certified Natural Burmese/Myanmar Ruby & Diamond Necklace & Bracelet, Retro
Located in London, GB
Certified Burmese natural ruby and diamond necklace featuring an alternating infinite pattern of stunning blazing red rubies. These rubies are carefully sourced and are natural Burme...
Category

1980s Retro Vintage Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

14 Karat Gold & Ruby Tulip Flower Shaped Photo Locket Charm or Pendant
Located in Philadelphia, PA
A very fine gold flower shaped locket charm or pendant. With three round faceted rubies prong set in gold. The textured gold tulip shaped locket is set with a jump ring to allow f...
Category

20th Century Modern Ruby More Necklaces

Materials

Ruby, Gold, 14k Gold

White Orchid Studio Beautiful Turquoise Turquoise Amethyst Ruby Silver Necklace
Located in Athens, GA
Sleeping Beauty and Mohave turquoise pair with amethyst and ruby on a princess necklace. Our vanilla bean clasp in antiqued sterling silver secures Beautiful Turquoise. 18”
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Amethyst, Ruby, Turquoise, Turquoise Matrix, Silver

Ruby Pendant in 18kt Rose Gold by BIGLI
Located in Oudenaarde, BE
We are proud of our flagship collection: Mini Sweety. Mini Sweety pendant in 18kt pink gold with Rock crystal, ruby and mother of pearl and a signature diamond (0,01 ct) Reference:...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Rock Crystal, Ruby, Gold, 18k Gold, Rose Gold

Diamond, Ruby and Mother of Pearl Queen Bee Necklace in 18k Rose Gold
Located in London, GB
An exquisite Queen Bee diamond and mother-of-pearl necklace set in 18k rose gold. The necklace is predominantly set with a central rose gold bee which is set throughout with white a...
Category

2010s Modern Ruby More Necklaces

Materials

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

Roman Malakov Ruby and Diamond Halo Drop Pendant Necklace
Located in New York, NY
A unique and chic necklace showcasing a drop pendant with a 1.30 carat oval cut ruby, surrounded by two rows of round brilliant diamonds. The pendant is suspended on a ruby and diamo...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Ruby and Diamond Necklace in Platinum 950
Located in Lucerne, CH
This beautifully elegant necklace in platinum 950 features 22 oval-cut rubies from Burma. They are of pure and intense red colour and have a total weight of approximately 22.00 carat...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, Platinum

Estate Diamond and Red Ruby 18 Karat Gold Choker Necklace
Located in Miami, FL
An exquisite ruby and diamond necklace from circa 1980's with outstanding gems. The centre of the necklace features an X design and is comprised of 1oval and 22 square genuine rubies...
Category

1980s Vintage Ruby More Necklaces

Materials

Ruby, 18k Gold

Antique Burma Ruby and Diamond Necklace
Located in New Orleans, LA
Sumptuous Burma rubies and vibrant white diamonds come together in this sensational antique necklace. Featuring a remarkable red hue, the Burma rubies total approximately 50 carats, ...
Category

19th Century Victorian Antique Ruby More Necklaces

Materials

Diamond, Ruby, 10k Gold, Silver

7 Layer Fresh Water Pearl, Ruby Bead + 14KG Spacer Clasp Opera Length Necklace
Located in New York, NY
7 Layers of Fresh water Pearl with Ruby Beads with 14 Karat yellow gold Spacer clasp Opera Length Necklace The opera length multi layer pearl necklace set consists of 7 original...
Category

2010s Ruby More Necklaces

Materials

Pearl, Ruby, 14k Gold

Aquamarine Diamonds Emeralds Rubies Sapphires Onyx 9Kt 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). Beautiful necklace mounted with an...
Category

1960s Retro Vintage Ruby More Necklaces

Materials

Ruby, Sapphire, Aquamarine, Diamond, Emerald, Onyx, Gold, 9k Gold, Rose ...

4 Carat Ruby, 3.75 Carat Diamond and Gold Necklace
Located in New York, NY
The front plaque with three curved round diamond channels accented by graduated rectangular rubies, joined to a twin fancy linking back chain gathered by ruby and diamond stations, m...
Category

Early 20th Century Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

19.32 Carat Ruby Diamond Necklace Set
Located in Richmond, BC
Royal ruby diamond necklace earrings set. High brilliance, oval faceted, 19.32 carats natural rubies mounted in an open basket profile with yellow gold prongs, accented with round br...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

Sapphires, Ruby, Tsavorite and Diamond Butterfly Necklace in 18k White Gold
Located in Bangkok, TH
Blue Sapphire 3.61 carats, Yellow Sapphire 2.25 carats, Purple Sapphire 1.19 carats, Pink Sapphire 1.79 carats, Ruby 0.49 carat, Tsavorite 1.03 carats and Diamond 4.19 carats Necklac...
Category

2010s Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, Sapphire, Tsavorite, 18k Gold, White Gold

18 Karat White Gold Diamond Oval Ruby Pendant
Located in Monte-Carlo, MC
18K white gold fashionable round pendant is from Timeless Collection. This piece of jewellery is made of natural white diamonds in total of 0.4 Carat and oval shape natural ruby in t...
Category

2010s Contemporary Ruby More Necklaces

Materials

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

GRS Certified 43.29 Carat Pear Shaped Ruby Diamond Halo Necklace 18K White Gold
Located in GREAT NECK, NY
Material: 18k White Gold Center Stone Details: 1 Pear Shaped Ruby at 43.29 Carats - Measuring 29.96 x 19.85 x 8.64 Ruby is GRS Certified - Photo of the certification is attached Dia...
Category

2010s Contemporary Ruby More Necklaces

Materials

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

Assael Prince Dimitri South Sea Pearl 81 Carat Ruby Moonstone Gold Long Necklace
Located in Boca Raton, FL
Impressive long 18k yellow gold necklace by Assael for Prince Dimitri, set with 81 carats in rubies, 65.16ctw in moonstones and approx. 13mm - 14mm. South Sea pearls. retail $55500. ...
Category

21st Century and Contemporary Ruby More Necklaces

Materials

Moonstone, Pearl, Ruby, 18k Gold

Fei Liu Russian Nephrite Ruby 18 Karat Yellow Gold Mouse Pendant Necklace
Located in Birmingham, GB
Description: Rat pendant with Russian nephrite and 0.017ct ruby eye, set with 18ct yellow gold detail. Chain length is 16 inches + 2 inch extension 18ct yellow gold plate on sterling...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Jade, Ruby, 18k Gold, Gold Plate, Yellow Gold, Silver

Bulgari 1980s Blue Yellow Sapphire Ruby Diamond Gold Necklace
Located in New York, NY
1980s Bvlgari necklace, in 18k gold, with blue and yellow sapphires - 13.03ctw, rubies and 5.94ctw in diamonds. Necklace is 16.5" long and 18mm wide. Marked: Blvgari, 2 Z 13.03cts, 5...
Category

Late 20th Century Ruby More Necklaces

Materials

Diamond, Ruby, Yellow Sapphire, Gold

Vintage Retro Ruby 18K Yellow Gold Double Snakes Head Mesh Choker Necklace
Located in Miami, FL
 Intricate Double Snake Head necklace, in a Mesh design with multiple snake link design.  a snake lover's piece, the dream of every herpetologist,  Crafted in solid 18K yellow gold...
Category

1950s Retro Vintage Ruby More Necklaces

Materials

Ruby, Yellow Gold

Harry Winston Jacques Timey Diamond Ruby Emerald Sapphire Two Serpent Necklace
Located in New York, NY
A spectacular piece designed by Jacques Timey for Harry Winston that dates back to the 1970s. This brilliant necklace is crafted as two serpent heads connected by a band thoroughly e...
Category

1970s Vintage Ruby More Necklaces

Materials

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

Mediterranean Red Coral White Diamond Ruby Emerald Yellow Gold Butterfly Pendant
Located in Naples, IT
For any problems related to some materials contained in the items that do not allow shipping and require specific documents that require a particular period, please contact the selle...
Category

21st Century and Contemporary Art Nouveau Ruby More Necklaces

Materials

Coral, Diamond, White Diamond, Emerald, Ruby, 9k Gold, Yellow Gold, Ster...

1.70 Carat Natural Ruby and Diamond Necklace Pendant G SI 14 Karat White Gold
Located in New York, NY
1.70 Carat Natural Diamond and Ruby Necklace 14K White Gold 18'' chain 100% Natural Diamonds and Ruby 1.70CT G-H SI 14K White Gold, Prong Style, 2.60 gram 9/16 inch in height, 3/8 i...
Category

21st Century and Contemporary Contemporary Ruby More Necklaces

Materials

Diamond, Ruby, 14k Gold, White Gold

Blue Sapphire with Ruby and Diamond Panther Necklace Set in 18 Karat Gold
Located in Bangkok, TH
Blue Sapphire 1.64 carats with Ruby 0.16 carat and Diamond 0.25 carat Necklace set in 18 Karat Gold Settings Width: 5.0 cm Length: 46.0cm Total Weight: 34.16 grams "We first open...
Category

2010s Ruby More Necklaces

Materials

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

Bulgari Heart Shaped Ruby Diamond Sapphire Yellow Gold Necklace Set
Located in New York, NY
Vintage 18k yellow diamond necklace, designed as a series of links pave-set with brilliant-cut diamonds, set at the center with graduated heart-shaped rubies and cabochon sapphires. ...
Category

1940s Vintage Ruby More Necklaces

Materials

Diamond, Ruby, Sapphire, 18k Gold

Certified Ruby and Diamond Shaped Necklace
Located in New York, NY
Certified Ruby & Diamond Shaped Necklace 7 larger oval rubies & 86 smaller oval rubies approximately 48.50 Cts 330 round cut diamonds Weight: approximately 12.50 Measurements: 14" l...
Category

1970s Vintage Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold, White Gold

Bulgari Ruby Chain Necklace
Located in New York, NY
A rare Bulgari chain necklace in 18kt yellow and white gold, accented with diamonds, showcasing three natural no-heat Burma rubies (app. 9crts total). Made in Italy, circa 1970
Category

1970s Vintage Ruby More Necklaces

Materials

Diamond, Ruby, 18k Gold

Art Nouveau White Diamond Emerald Ruby Tsavorite Yellow Gold Elephant Pendant
Located in Naples, IT
This Elephant Pendant is made of 14K Yellow Gold and Sterling Silver. This Pendant has 0.35 Carats of White Brilliant Cut Diamonds. This Pendant has 19.90 Carats of Emeralds. This Pe...
Category

Late 20th Century Art Nouveau Ruby More Necklaces

Materials

Diamond, White Diamond, Emerald, Ruby, Tsavorite, 14k Gold, Yellow Gold,...

AGL Certified Burmese Ruby Diamond Necklace
Located in New York, NY
A beautiful necklace embellished with Burmese heated rubies and diamonds, set in 18K white gold. 33 oval rubies weighing 34.81 carats total. Accompanied with an AGL certificate # 109...
Category

20th Century Contemporary Ruby More Necklaces

Materials

White Diamond, Ruby, 18k Gold, White Gold

Contemporary 18K Yellow Gold, Sphere Chain Necklace with Multicoloured Gemstones
Located in Nicosia, CY
The ‘Baby Morning Star’, chain necklace is crafted in 18K yellow gold, hallmarked in Cyprus. This elegantly bold, statement chain, comes in a highly polished finish and features a di...
Category

2010s Contemporary Ruby More Necklaces

Materials

Rubelite, Ruby, Tanzanite, Tsavorite, Blue Topaz, Garnet, Quartz, Yellow...

Marina J. Graduated Pearl, Ruby and 14K Yellow Gold, Chandelier Necklace
Located in Beverly Hills, CA
Gorgeous hand made Victorian inspired necklace by Marina J. This beautiful and classic piece is made of Graduated Pearl Strands, which have been individually picked for a perfect and...
Category

21st Century and Contemporary Artisan Ruby More Necklaces

Materials

Pearl, Ruby, Yellow Gold, Gold, 14k 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.