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Ruby Jewelry

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Item Ships From: USA
Gemstone: Ruby
Roberto Coin Primavera Woven Flex Bangle Bracelet in 18 Karat White Gold
Located in Scottsdale, AZ
The inner circumference of this bracelet measures 6.38 inches and will comfortably fit up to a 6.25 inch wrist. The Roberto Coin Primavera flex bangle bracelet is a stunning piece ...
Category

21st Century and Contemporary Italian Contemporary Ruby Jewelry

Materials

Ruby, Gold, 18k Gold, White Gold

Ruby and Diamond Choker by Elan
Located in New York, NY
Ruby and Diamond Choker by Elan A yellow gold bead chocker with 6 ruby beads and 143 round cut diamonds. Approximate combined ruby weight: 13.00 carats Approximate combined diamond...
Category

20th Century Unknown Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Vintage 40 Carat Natural Carved Opal in 14K Gold Floral Pendant Necklace 30"
Located in Miami, FL
Vintage 40 Carat Natural Carved Opal in 14K Yellow Gold Floral Frame Pendant Necklace. The opal is carved to perfection and full of luster. Fixed with a 30 inch 14k solid gold cable ...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Opal, Ruby, Gold, 14k Gold, Yellow Gold

Vintage South Sea Pearl & Diamond Turtle Brooch GIA
Located in Montgomery, AL
We are loving the artistic use of a beautiful saltwater pearl to fabricate this lovely piece! Item Details Material: 18K Yellow Gold Back; White Gold Front 45 - 1.4mm Round Brillian...
Category

20th Century Ruby Jewelry

Materials

Diamond, Pearl, South Sea Pearl, Ruby, Gold, 18k Gold, White Gold, Yello...

Vintage Buccellati Carved Ruby Flower Yellow Gold Earring
Located in Holland, PA
18k yellow gold vintage carved ruby handmade earrings by master jeweler BUCCELLATI. With 6 carved rubies. These vintage Buccellati 18k yellow gold earrings showcase exquisite carved...
Category

20th Century Italian Ruby Jewelry

Materials

Ruby, Yellow Gold

Estate AGL Minor Heat Burma Ruby 36.00cts Diamond 18K Gold Bracelet
Located in Miami, FL
Adorn your wrist with the epitome of luxury: a certified AGL Burma Ruby and Diamond Tennis captivating three-row tennis Bracelet. This 6.75-inch, 14 mm wide bracelet Has an elegant ...
Category

1980s Vintage Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

14K Yellow Gold .50 CTW Ruby and Diamond Halo Pendant Necklace
Located in Stuart, FL
14k yellow gold .50 CTW ruby and diamond halo pendant necklace. The diamonds are all round and the ruby is oval, pendant comes on a 16 inch diamond cut cable chain, has a lobster cla...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

12 Carat Treated Ruby & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold
Located in New York, NY
12 Carat Treated Ruby & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold This exceptionally affordable Tennis bracelet has 22 stones of Treated oval shape quality Ruby . Ea...
Category

2010s Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

5.3ct Ruby Ring w Earth Mined Diamonds in Solid 14k Yellow Gold Round 10mm
Located in Columbus, OH
This beautiful brilliant cut round ring features an earth mined ruby and natural diamond accents in 14k yellow gold. A statement ring design perfect for an eye catching engagement or...
Category

2010s American Modern Ruby Jewelry

Materials

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

Lalaounis Vintage Greek Revival Ruby Gold Lion Bangle Bracelet
Located in Miami, FL
This Vintage Iconic Greek Bangle bracelet by famous Greek designer Lalaounis is created in 18k yellow gold. This highly collectible Lalaounis cuff bangle bracelet is centered with 2 ...
Category

1960s Greek Retro Vintage Ruby Jewelry

Materials

Ruby, Gold

14K Yellow Gold .14 CTW Ruby and .20 CTW Diamond Bracelet
Located in Stuart, FL
14K Yellow Gold .14 CTW Ruby and .20 CTW Diamond Bracelet. All the rubies are straight baguettes, all the diamonds are round, bracelet has a figure 8 clasp to open and close, bracele...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Alexander Beverly Hills 5.31ct Pastel Rainbow Sapphire Tennis Bracelet 18k Gold
Located in BEVERLY HILLS, CA
Exquisite and perfectly graduated rainbow multi color sapphire tennis bracelet, by Alexander Beverly Hills. 65 round sapphires, 6.20 carats total. Four prong set in 18k yellow gold, ...
Category

2010s American Modern Ruby Jewelry

Materials

Blue Diamond, Ruby, Sapphire, Pink Sapphire, Yellow Sapphire, Green Sapp...

2.56 TCW Oval Ruby Burma No Heat
Located in New York, NY
ITEM DESCRIPTION ID #: NYC57872 Stone Shape: Oval Diamond Weight: 2.56 Carat Measurements: 9.01 x 6.93 x 4.64 mm Appraisal Value: $7000 Our Price: $3500 A free online appraisal i...
Category

21st Century and Contemporary American Modern Ruby Jewelry

Materials

Ruby

Minimal Natural Ruby Diamond Chain Bracelet in 18k Solid Yellow Gold
Located in Houston, TX
This Minimal Natural Ruby Diamond Chain Bracelet in 18K gold showcases 0.32 carats endlessly sparkling natural ruby and 0.05 carats of diamond. It measures 7 inches long in length. ...
Category

21st Century and Contemporary American Modern Ruby Jewelry

Materials

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

Dainty 18k Yellow Gold 1.95 Carats Ruby Huggie Hoop Earrings for Her
Located in Houston, TX
Dainty Ruby Huggie Hoop Earrings in 18K Gold to make a statement with your look. You shall need hoop earrings to make a statement with your look. These earrings create a sparkling, l...
Category

21st Century and Contemporary American Art Deco Ruby Jewelry

Materials

Ruby, Gold, 18k Gold, Yellow Gold

Vintage Ruby Diamond 18k Yellow Gold Snake Ring
Located in Beverly Hills, CA
One Vintage Ruby Diamond 18k Yellow Gold Snake Ring. Featuring three marquise cut rubies with a total weight of approximately 0.45 carat. Accented by nine round brilliant cut diamond...
Category

1980s Vintage Ruby Jewelry

Materials

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

Exquisite 9.8 CTW Ruby Diamond Halo Pendant Necklace in 14k Yellow Gold
Located in Houston, TX
Exquisite 9.8 CTW Ruby Diamond Halo Pendant Necklace in 14K Gold studded with octagon and baguette cut ruby and round diamonds. This stunning piece of jewelry instantly elevates a ca...
Category

21st Century and Contemporary American Art Deco Ruby Jewelry

Materials

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

Vintage Red Ruby and Diamond Platinum Cocktail Ring
Located in Montreal, QC
Simply Beautiful! Stylish and Finely detailed Vintage Ruby and Diamond Platinum Ring. Centering set a securely nestled Ruby, weighing approx. 0.44 Carat, surrounded by Diamonds, weig...
Category

Late 20th Century Modernist Ruby Jewelry

Materials

Diamond, Ruby, Platinum

18k Rose Gold Flying Hummingbird Emerald and Ruby Chain Earrings for Women
Located in Houston, TX
Flying Hummingbird Emerald and Ruby Chain Earrings in 18K Gold with Diamonds to make a statement with your look. These earrings create a sparkling, luxurious look featuring mix cut g...
Category

21st Century and Contemporary American Artist Ruby Jewelry

Materials

Emerald, Ruby, Gold, 18k Gold, Rose Gold

Bochic “Orient” Ruby, Sapphires & Vintage Jade Cuff Set In 18 K Gold & Silver
Located in New York, NY
Bochic “Orient” Ruby, Sapphires & Mint Jade Vintage Cuff Set In 18 K Gold & Silver Natural Cabochon Ruby - 6 carats Blue color sapphires - 5.00 carats Vintage Jade from China M...
Category

21st Century and Contemporary Thai Baroque Ruby Jewelry

Materials

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

Ruby and Diamond Clover Earrings
Located in New York, NY
Ruby and Diamond Clover Earrings 5-leaf clover-shaped earrings with five pear-shaped rubies accented by round-cut diamonds. Back type: clip-on Approximately Measures 1" long Gros...
Category

20th Century Unknown Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Yellow Gold Ruby & Sapphire Reversible Cross Pendant - 14k Round 1.78ctw Faith
Located in Greensboro, NC
Metal Content: 14k Yellow Gold Stone Information Natural Rubies Treatment: Heating Carat(s): .52ctw Cut: Round Color: Pinkish Red Natural Sapphires Treatment: Heating Carat(s): .46...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, Sapphire, 14k Gold, Yellow Gold

Modernist 1960 Cocktail Ring In 18Kt Gold With 15.36 Ctw In Diamonds And Rubies
Located in Miami, FL
Retro-modernist cocktail ring with gemstones. Fabulous, oversized bombe cocktail ring, created with retro-modernist patterns, back in the 1960. This cocktail ring has been crafted w...
Category

1960s American Modernist Vintage Ruby Jewelry

Materials

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

Vintage Estate 14K Yellow Gold Square Cut Ruby Wide Eternity Band - Size 6 1/4
Located in Great Neck, NY
Beautiful Vintage Estate 14K Yellow Gold Square Cut Ruby Wide Eternity Band - Size 6 1/4. This gorgeous wedding band is crafted in 14k yellow gold. The ring has an intricate design w...
Category

1970s Contemporary Vintage Ruby Jewelry

Materials

Ruby, Gold, 14k Gold, Yellow Gold

Vintage 23K Yellow Gold Ruby Eyed Lizard Brooch
Located in Houston, TX
Metal Type: 23K Yellow Gold Length: 2.50 inches Width: 26.00 mm Weight: 16.19 grams Ruby eyed Lizard vintage brooch. The metal was tested and determined to be 23K yellow gold. En...
Category

Late 20th Century Unknown Ruby Jewelry

Materials

Ruby, Gold, Yellow Gold

14K White Gold Emerald and Diamond Halo Stud Earrings
Located in New York, NY
Indulge in luxury with our Emerald and Diamond Halo Stud Earrings in 14K White Gold. Featuring stunning round emeralds, these emerald stud earrings exude sophistication and exclusivi...
Category

2010s Ruby Jewelry

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 14k Gold, White Gold, Yellow Gold

4.04 Carat Natural Ruby Open Hoop Earrings for Her in 18k Solid Yellow Gold
Located in Houston, TX
4.04 Carat Natural Ruby Hoop Earrings for Her in 18K Gold to make a statement with your look. You shall need hoop earrings to make a statement with your look. These earrings create a...
Category

21st Century and Contemporary American Contemporary Ruby Jewelry

Materials

Ruby, Gold, 18k Gold, Yellow Gold

French Retro Carved Ruby Emerald Diamond 18 Karat Gold Brooch
Located in New York, NY
Beautifully designed and masterfully handcrafted in 18 karat yellow gold. This chic and charming French retro brooch from ca 1940 in the shape of Alpha-Omega is set with beautiful fo...
Category

1940s French Retro Vintage Ruby Jewelry

Materials

Diamond, Emerald, Ruby, 18k Gold

Minimal Ruby Birthstone Pendant Crafted in Sterling Silver for Her
Located in Houston, TX
This Minimal Ruby Birthstone Pendant is meticulously crafted from the finest materials and adorned with stunning ruby which enhances confidence, leadership qualities and attract care...
Category

21st Century and Contemporary American Modernist Ruby Jewelry

Materials

Ruby, Silver, Sterling Silver

18 Karat Yellow Gold Cactus Ruby Ring
Located in New York, NY
Thomas Kurilla , Tiffany designer is always inspired by plants and leaves. This ring came from such drawings. 1.8 carats rubies. Organic undulating lines for a sexy ring. Made to or...
Category

2010s North American Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold, Yellow Gold

57.6 Carat Oval Ruby Bracelet
Located in New York, NY
Ruby Weight: 57.6 ct, Diamond Weight: 4.64 ct, Metal: Platinum/18k Yellow Gold, Metal Weight: 18.46 gm, Birthstone: July, CD Certified
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

Necklace & Earring Suite 35Ct Natural Ruby No Heat & Black & White Diamond 18KWG
Located in New York, NY
Necklace & Earring Suite 35 Ct Natural Ruby No Heat & Black & White Diamond 18KWG This Large eye catching Collar Necklace with matching earrings are crafted from 18 Karat gold and ...
Category

2010s Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Important Antique 18 Carats Ruby and Diamond Bracelet
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP All Gemstones are Natural Rubies = 13.38 Carats Cut: Cabochon Diamonds = 4.65 Carats Color: H-M, Clarity: VS-SI Metal: 14K Gold ...
Category

Mid-20th Century Art Deco Ruby Jewelry

Materials

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

3.50 Ct Ruby Emerald Cut Studs
Located in New York, NY
Ruby Weight: 3.50 CTS, Measurements: 8 x 5.5 mm, Shape: Emerald-Cut, Color: Pinkish-Red, Diamond Weight: 0.26 CT, Metal: 18K White Gold, Gold Weight: 3.72 gm, Hardness: 9, Birthstone...
Category

21st Century and Contemporary African Ruby Jewelry

Materials

Ruby, 18k Gold

1.30 Carats Ruby Baguette Half Eternity Ring with Diamonds
Located in New York, NY
Presenting our exquisite 1.30 Carats Mozambique Ruby Baguette Half Eternity Ring, adorned with captivating baguette diamonds, a fusion of e...
Category

2010s American Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

18.70 Carat Ruby Necklace
Located in New York, NY
Ruby Weight: 18.70 ct, Diamond Weight: 0.50 ct, Metal: 18K Rose Gold, Gold Weight: 18.13 gm, Length: 16", Birthstone: July, Hardness: 9
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

26.07 Carat Ruby Flower Necklace
Located in New York, NY
Ruby Weight: 26.07 ct, Diamond Weight: 4.24 ct, Metal: 18K Rose Gold, Gold Weight: 24.40 gm, Length: 23", Birthstone: July, Hardness: 9
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

13.26 Carat Ruby Oval Bracelet
Located in New York, NY
Ruby Weight: 13.26 ct, Measurements: 8x5 mm (10 pcs), Diamond Weight: 10.94 ct, Measurements: 1.8-2.8 mm (190 pcs), Metal: 18K White Gold, Gold Weight: 39.34 gm, Length: 7", Birthsto...
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

4.48 Carat Ruby Bangle
Located in New York, NY
Ruby Weight: 4.48 CT, Ruby Measurements: 6x4 mm, Diamond Weight: 0.79 CT, Metal: 18K White Gold/11.72 gm, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

GIA and GRS Certified 3.10 Carat Unheated Ruby Diamond Platinum Ring for Women
Located in Los Angeles, CA
The best things in life are everlasting. And our gemstones will never fade, just like your love for each other. Live, love and laugh with this stunning dainty ruby ring...
Category

21st Century and Contemporary American Contemporary Ruby Jewelry

Materials

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

43.89 Carat Mozambique Ruby EC Bracelet
Located in New York, NY
Ruby Weight: 43.89 ct, Diamond Weight: 4.66 ct, Metal: Platinum/18k Yellow Gold, Metal Weight: 19.18 gm, Birthstone: July, CD Certified
Category

21st Century and Contemporary Mozambican Ruby Jewelry

Materials

Ruby, Platinum

Sugarloaf Burma Cabochon Ruby 0.55 Carat Yellow Gold 0.15 Inch Stud Earrings
Located in New York, NY
These Sugarloaf Burma Cabochon Ruby stud earrings are a stunning addition to any jewelry collection. Each earring features a vibrant 0.27.5 carat Ruby set in 14 Karat Yellow Gold. Th...
Category

2010s American Contemporary Ruby Jewelry

Materials

Ruby, Gold, 14k Gold, Yellow Gold

Vintage Ruby Diamond 18k White Gold Cluster Ring
Located in Beverly Hills, CA
One Vintage Ruby Diamond 18k White Gold Cluster Ring. Featuring one marquise cut ruby weighing approximately 0.55 carat. Accented by six round brilliant and four marquise cut diamond...
Category

1990s Ruby Jewelry

Materials

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

3.59 Ct Ruby Oval Earrings
Located in New York, NY
Ruby Weight: 3.59 CT, Measurements: 9x7 mm, Diamond Weight: 1.76 CT, Metal: 18K White Gold, Gold Weight: 5.99 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

18.22 Carat ruby Necklace
Located in New York, NY
Ruby Weight: 18.22 ct, Metal: 18K Rose Gold, Gold Weight: 20.26 gm, Length: 16", Birthstone: July, Hardness: 9
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.69 Ct Ruby Pear Studs
Located in New York, NY
Ruby Weight: 1.69 CT, Measurements: 7x5 mm, Diamond Weight: 0.08 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 2.21 gm, Shape: Pear, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.69 Ct Ruby Pear Studs
Located in New York, NY
Ruby Weight: 1.69 CT, Measurements: 7x5 mm, Diamond Weight: 0.08 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 2.21 gm, Shape: Pear, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

2.02 Carat Ruby Oval Studs 7x5
Located in New York, NY
Ruby Weight: 2.02 CT, Measurements: 7x5 mm, Diamond Weight: 0.06 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.84 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

2.02 Carat Ruby Oval Studs 7x5
Located in New York, NY
Ruby Weight: 2.02 CT, Measurements: 7x5 mm, Diamond Weight: 0.06 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.84 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

2.02 Carat Ruby Oval Studs 7x5
Located in New York, NY
Ruby Weight: 2.02 CT, Measurements: 7x5 mm, Diamond Weight: 0.06 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.84 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.69 Ct Ruby Pear Studs
Located in New York, NY
Ruby Weight: 1.69 CT, Measurements: 7x5 mm, Diamond Weight: 0.08 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 2.21 gm, Shape: Pear, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.69 Ct Ruby Pear Studs
Located in New York, NY
Ruby Weight: 1.69 CT, Measurements: 7x5 mm, Diamond Weight: 0.08 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 2.21 gm, Shape: Pear, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.69 Ct Ruby Pear Studs
Located in New York, NY
Ruby Weight: 1.69 CT, Measurements: 7x5 mm, Diamond Weight: 0.08 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 2.21 gm, Shape: Pear, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.22 Carat Ruby Oval Studs 6x4
Located in New York, NY
Ruby Weight: 1.22 CT, Measurements: 6x4 mm, Diamond Weight: 0.05 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.71 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.22 Carat Ruby Oval Studs 6x4
Located in New York, NY
Ruby Weight: 1.22 CT, Measurements: 6x4 mm, Diamond Weight: 0.05 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.71 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.22 Carat Ruby Oval Studs 6x4
Located in New York, NY
Ruby Weight: 1.22 CT, Measurements: 6x4 mm, Diamond Weight: 0.05 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.71 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

1.22 Carat Ruby Oval Studs 6x4
Located in New York, NY
Ruby Weight: 1.22 CT, Measurements: 6x4 mm, Diamond Weight: 0.05 CT 1.2 mm, Metal: 18K White Gold, Gold Weight: 1.71 gm, Shape: Oval, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k Gold

2.25 Ct Ruby EC Studs
Located in New York, NY
Ruby Weight: 2.25 CTS, Measurements: 7x5 mm, Diamond Weight: 0.07 CT 1.3 mm, Metal: 18K White Gold, Gold Weight: 1.92 gm, Shape: Emerald-Cut, Color: Red, Hardness: 9, Birthstone: July
Category

21st Century and Contemporary Ruby Jewelry

Materials

Ruby, 18k 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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