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Ruby Jewelry

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Period: 1990s
Gemstone: Ruby
1.25 Carat Emerald Cut Ruby and Diamond Side-Stone Engagement Ring
Located in New York, NY
A magnificent engagement ring showcasing a 1.25 carat emerald cut red ruby. Flanking the center gemstone are three graduating baguette diamonds ...
Category

1990s American Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18KT Gold, 1.78 Carat Ruby, 1.59 Carat Sapphire, and .81 Carat Diamond Earrings
Located in New York, NY
18 karat yellow gold earrings beautifully designed with marquis blue sapphires, trillion cut rubies and round brilliant diamonds. These earrings meas...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

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

Betony Vernon "O-Ring Earrings Ruby Pavée" Sterling Silver 925 Ruby in Stock
Located in Rome, IT
The "O-Ring Earrings Ruby Pavée" were designed by Betony Vernon in 1992 and this unique piece was manufactured in 1997. The "O-Ring Earrings" series are a timeless classic of BV Jewe...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Ruby, Sterling Silver

Art Deco Style Jade Blue Sapphires Rubies Emeralds Gold Enamel Diamonds Earrings
Located in Bangkok, TH
in the upper part we have 2 Blue Sapphire oval cabochons measuring 9 mm x 11 mm, the central part is composed of 2 elements in white gold ,diamonds ,rubies ,emeralds and blue enamel,...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Emerald, Jade, Ruby, Blue Sapphire, Gold, 14k Gold, Enamel

14 Karat White Gold Ring with Center Stone Ruby and Diamonds
Located in Tel Aviv, IL
14 Karat White Gold Ring with Center Stone Ruby and Diamonds Lovely gold ring with center oval cut Ruby and band filled with diamonds. Ruby is 2.5 ct. Quality diamonds G VS2 total of...
Category

1990s French Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold, White Gold

Art Deco Style Jade Bamboo Gold Diamonds Rubies Black Enamel Dangle Earrings
Located in Bangkok, TH
Round jade buttons tops,middle parts in white gold,2 small round ruby cabochons , 14 round full cut diamonds,black enamel,2 bamboo shape carved Burma jades Length 70 mm Width 10 mm W...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Ruby, Gold, 18k Gold, Enamel

Art Deco Style Jade Donuts Gold Diamonds Rubies and Black Enamel Dangle Earrings
Located in Bangkok, TH
2 round onix buttons with small rubies cabs in the center,middle parts with white gold , 12 small round full cut diamonds and black enamel,2 Burma Jade Donuts Length 46 mm Width 2...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Ruby, Gold, Enamel, 18k Gold

Art Deco Style Burma Jade Rubies Black Onix Black Enamel Gold Diamonds Earrings
Located in Bangkok, TH
Tops are 2 round black onix buttons with small round ruby cabochons in the center,middle parts in white gold,full cut round diamonds and black enamel,bottom parts are 2 triangular ca...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Onyx, Ruby, Gold, 18k Gold, Enamel

Michael Bondanza 18 Karat Yellow Gold Swan Pin
Located in Chicago, IL
Michael Bondanza 18K yellow gold swan pin with pear shape cabochon ruby eye. Last retail $3250
Category

1990s American Contemporary Ruby Jewelry

Materials

Ruby, Yellow Gold

Picchiotti 18 Karat Gold, 2.05 Carat Ruby and 1.14Ct. Diamond Gourmette Bracelet
Located in New York, NY
Designed by master craftsman Giuseppe Picchiotti, This Gourmette Ruby and Diamond Bracelet is a perfect example of a timeless piece that can be dressed up or down. 18Kt. Yellow and W...
Category

1990s Italian Art Deco Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold

Diamond Turtle Pendant, 18 Karat White Gold
Located in Atlanta, GA
Pendant Details: Metal type: 18 Karat White Gold Weight: 6.06 grams Measures: 1 inch length Features small diamond accents outlining the turtle shell Features ruby accents on the e...
Category

1990s Unknown Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Diamond, Ruby and Enamel Santa Claus Pin Brooch, 18 Karat Gold
Located in Atlanta, GA
Item Details: Metal Type: 18 Karat White Gold Weight: 15 grams Measurements: 2 inch height x 1 inch width Features: Belly of Santa Claus features .8 carat total of Ruby Eyes and Be...
Category

1990s Unknown Modern Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold, Enamel

18 Karat Gold Humming Bird Brooch with Invisibly Set Diamonds and Gem Stones
Located in New York, NY
Designed in 18 karat yellow gold , this humming bird brooch is beautifully depicted with gem stones of diamonds, rubies, emeralds and blue sapphires. ...
Category

1990s Italian Retro Ruby Jewelry

Materials

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

Oval Ruby 18 Carat Yellow Gold Geometric Ring
Located in London, GB
This unique ring features a beautiful ruby weighing approximately 2.50ct mounted in a rub over, open back setting. This vibrant ruby is set into a solid geometric designed 18 carat y...
Category

1990s Unknown Modern Ruby Jewelry

Materials

Ruby, Gold, 18k Gold, Yellow Gold

Cellini 18KT White Gold 5.54 Carat Burmese Ruby and 5.14 Carat Diamond Earrings
Located in New York, NY
Oval-shaped rubies surrounded by a squared entourage of baguette and pear-shaped diamonds. Set in 18-karat white gold. Burmese ruby weight: 5.54 carats total. Diamond weight: approxi...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold

Cellini Jewelers Platinum 21.35Ct. Burmese Ruby and 3.86 Carat Diamond Bracelet
Located in New York, NY
AN IMPORTANT RUBY AND DIAMOND BRACELET. The graduating bracelet is designed with two rows of oval Burmese Rubies with single Marquis Diamond connections. The magnificent stones are...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Platinum

Italian 1.75 Carat Ruby and Onyx Yellow Gold Cufflinks
Located in Jesmond, Newcastle Upon Tyne
An impressive pair of vintage Italian 1.75 carat ruby and black onyx, 18 karat yellow gold cufflinks; part of our diverse men's jewelry and estate jewelry collections. These fine an...
Category

1990s Italian Ruby Jewelry

Materials

Onyx, Ruby, 18k Gold, Yellow Gold

Art Deco Style Jade Gold Rubies Diamonds Black Onix Black Enamel Drop Earrings
Located in Bangkok, TH
2 round onix buttons with small rubies in the center,black enamel middle parts and white gold with 6 round full cut diamonds,2 Burma Jade round drops Length 51 mm Width 8 mm Weight 6...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Ruby, Jade, Gold, Enamel

Cellini 18KT Yellow Gold, 11.36 Carat Oval Ruby and 1.10 Carat Diamond Bracelet
Located in New York, NY
This 18 karat yellow gold bracelet is designed with 21 oval Rubies. Each ruby is set in a 4 prong setting. The Rubies alternate with 2 round brilliant Diamonds also set in 4 prongs. ...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

18 Karat Yellow Gold, 2.09 Carat Ruby Heart and 1.17 Carat Diamond Ring
Located in New York, NY
Cellini Jewelers NYC crafted this beautiful one of a kind ring which centers a 2.09 all natural Ruby heart, which is surrounded by .78 carats of baguette cut diamonds. The top of the...
Category

1990s American Contemporary Ruby Jewelry

Materials

Diamond, Ruby, Yellow Gold, 18k Gold

Diamonds and Rubies, White Gold Link 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). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1990s Italian Retro Ruby Jewelry

Materials

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

E. Wolfe & Co. 18 Karat Gold Hummingbird Brooch 4.37 Carat Cushion Pink Sapphire
Located in New York, NY
E. Wolfe & Co is a family-run fine jewellery manufacturing Workshop, established in 1850 and located in central London. They specialize in creating beautiful bespoke pieces - such as...
Category

1990s British Contemporary Ruby Jewelry

Materials

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

Sabbadini 18K Gold Ring with 4.90 Carat of Invisibly Set Rubies and Diamonds
Located in New York, NY
Created by the famed jewelers Sabbadini of Italy, this 18kt yellow gold ring is in their classic style. Vibrant invisibly set square cut Rubies are...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Vintage 1990s Ruby and Diamond Yellow Gold Insect Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.43 carat ruby and 0.04 carat diamond, 18 karat yellow gold 'insect' brooch; part of our diverse vintage jewelry and estate jewelry collections. This fine and impressive vintage insect brooch...
Category

1990s Unknown Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Oscar Heyman 18Kt Yellow Gold Diamond Ruby Elephant Brooch
Located in New York, NY
Since 1912, Oscar Heyman has been creating magnificent jewelry with the finest gemstones sourced from around the world at their atelier in New York City. The 18 karat yellow gold an...
Category

1990s American Retro Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Diamonds, Emeralds, Rubies, 18 Karat White Gold Bear 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). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1990s Italian Retro Ruby Jewelry

Materials

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

De Grisogono Boule Earrings with Ruby and Diamonds
Located in Miami, FL
A pair of ruby and diamond dangling earrings signed de GRISOGONO circa 1990. The iconic Boule earrings created by the famous house of jewelry are composed of a half ball of black diamonds pave...
Category

1990s Swiss Modern Ruby Jewelry

Materials

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

14 Karat Ruby Diamond Wire Bangle Bracelet
Located in Palm Desert, CA
14 Karat Ruby Diamond Wire Bangle Bracelet. A center gold bar of six pave-set Rubies and two curves of eight melee pave-set diamonds each for a total of s...
Category

1990s American Contemporary Ruby Jewelry

Materials

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

Giovane Italy 18 Karat Gold Mouse Brooch, 9.75 Carat Beaded Rubies and Diamonds
Located in New York, NY
The house of Giovane has forged its name with exquisite jewelry made in one of Italy’s oldest and most esteemed workshops. This adorable mouse brooch is the perfect example of their ...
Category

1990s Italian Retro Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Art Deco Style Burma Jade Rubies Black Onix Black Enamel Gold Diamonds Earrings
Located in Bangkok, TH
2 round black onix buttons with 2 round Ruby cabochons,middle parts in white gold ,full cut round diamonds,black enamel,bottom parts are 2 bamboo shape carved Burma Jades. In 1978 o...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Jade, Onyx, Ruby, Diamond, Gold, 18k Gold, Enamel

Art Deco Style Jade Ruby Black Onyx Gold Diamonds Red Enamel Dangle Earrings
Located in Bangkok, TH
We have 2 large ruby cabochons that make up the top, a central part with 2 small cylinders in black onyx, 2 elements in white gold,diamonds and red enamel , at the bottom there are 2...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Onyx, Ruby, Gold, 18k Gold, Enamel

Art Deco Style Phosphosiderite Ruby Gold Diamonds Green Enamel Dangle Earrings
Located in Bangkok, TH
A pair of art deco style earrings with the upper part where we find 2 buttons of Phosphosiderite diameter 10 mm below which we find 2 elements in white gold rubies diamonds and green...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Ruby, Gold, 18k Gold, Enamel

Ruby and Diamond 18 Karat White Gold Engagement Ring
Located in MIAMI, FL
Amazing design on this simple yet majestic beauty. This ring is hand crafted out of 18k white gold. This three stone design is highlighted with a center Ruby gemstone. The gemstone ...
Category

1990s Unknown Modern Ruby Jewelry

Materials

Diamond, Ruby, White Gold

GCS 3.5 Carat Ruby and Diamonds Yellow Gold Engagement Cluster Ring
Located in London, GB
This cluster ring is set with a deep red ruby weighing around 3.5ct. It has been tested by GCS lab as a Thailand with no indication of heating. It is surrounded with 7 marquise cut d...
Category

1990s Unknown Ruby Jewelry

Materials

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

Art Deco Style Burma Jade Rubies Gold Diamonds Red Enamel Black Onyx Earrings
Located in Bangkok, TH
Art Deco Earrings with 2 round black onix buttons on top with small round ruby cabochons in the center,middle part in white gold ,full cut round diamonds and red Enamels, bottom part...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Ruby, Gold, 18k Gold, Enamel

David Morris Diamond, Sapphire and Ruby Tri-Band Ring, circa 1996
Located in London, GB
Diamonds, sapphires and rubies are channel-set in three separate but interlocking eternity bands to comprise this single and distinctive couture ring from London-based jeweller David...
Category

1990s Unknown Ruby Jewelry

Materials

Diamond, Ruby, Sapphire, 18k Gold

Art Deco Style Gold Diamonds Rubies Black Enamel Rock Crystal Round Carved Drops
Located in Bangkok, TH
In these classic and totally handmade Art Deco Style Earrings the tops are 2 round black onix of 10 mm in diameter with small ruby round cabochons in the center,middle part in white ...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Crystal, Diamond, Rock Crystal, Ruby, Gold, 18k Gold, Enamel

R.C.M. 18 Karat Yellow Gold 5.75 Carat Ruby and Diamond Bracelet
By RCM
Located in New York, NY
This 18 karat yellow gold ring was designed by Nova. A unique domed setting highlights the tapered Baguette Cut Diamonds which are set with geometric puzzle affect. Ring size 6.25 ...
Category

1990s Italian Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

14 Karat Yellow Gold Ruby and Diamond Ring in an Art Deco Style Ring
Located in Los Angeles, CA
14k yellow gold ruby and diamond ring, containing 1 oval cut ruby of fine quality weighing .50pts. and 12 round full cut diamonds of very fine quality weighing .35pts. in an "Art Dec...
Category

1990s American Art Deco Ruby Jewelry

Materials

Diamond, Ruby, 14k Gold

Nino Verita 18 Karat Yellow Gold, Beaded Precious Gems and Diamond Earrings
Located in New York, NY
These 18 karat yellow gold earrings were designed by Nino Verita of Italy. A hi polished button earring with 5 stationary gold strands are accented with e...
Category

1990s Italian Retro Ruby Jewelry

Materials

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

Sabbadini Ruby Diamond Invisible Set Flower Earrings
Located in New York, NY
SABBADINI Ruby Diamond Invisible Set Flower Earrings in 18k White Gold. An impeccable pair of floral earrings by Sabbadini, featuring rub...
Category

1990s Ruby Jewelry

Materials

White Diamond, Ruby, 18k Gold

Picchiotti 18 Karat Yellow Gold Ring with Diamond, Ruby, and Black Onyx
Located in New York, NY
Crafted by the famed Italian designer Guiseppe Picchiotti, this ring is a perfect example of his meticulous work. Set in 18 karat yellow gold this ring features two rows of square cu...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

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

Ruby and Diamond Ear Clips
Located in New York, NY
18 karat yellow gold Earrings containing Round Brilliant cut Rubies and approximately 1.80 carats of Full cut Round diamonds.
Category

1990s Unknown Artist Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Cartier Ruby and Diamond “Three Band” Ring
Located in New York, NY
This glamorous ruby and diamond "Three Band" ring has unmistakable Cartier style and craftsmanship. Set among sparkling pavé-set diamonds, the triplet of cabochon rubies of superb co...
Category

1990s French Ruby Jewelry

Materials

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

Art Deco Style Jade Mother of Pearl Gold Diamonds Ruby Red Enamel Earrings
Located in Bangkok, TH
We have 2 oval carved Mother of Pearl cabochons on top , in the central part there are 2 gold elements , diamonds, red enamel and 2 small round Ruby cabochons, the bottom part is c...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Ruby, Gold, Enamel

Diamonds, Emeralds, Rubies, Blue Sapphires, Pearl 14 Karat White and Yellow Gold
Located in Marcianise, Marcianise (CE)
SHIPPING POLICY: No additional costs will be added to this order. Shipping costs will be totally covered by the seller (customs duties included). PS: THIS POLICY IS NOT APPLICABLE ...
Category

1990s Italian Retro Ruby Jewelry

Materials

Pearl, Ruby, Blue Sapphire, Sapphire, South Sea Pearl, Emerald, Diamond,...

George Gero 18 Karat Yellow Gold, 2.90 Carat Ruby Ring
Located in New York, NY
Designed by George Gero, this 18kt yellow gold gents ring is set with 12 square cut Rubies in a concave cloute (small gold beads) setting. The shank has 3 ribbed sections that go al...
Category

1990s Italian Contemporary Ruby Jewelry

Materials

Ruby, 10k Gold, 18k Gold, Yellow Gold

Art Deco Style Jade Donuts Black Onyx Rubies Gold Diamonds Red Enamel Earrings
Located in Bangkok, TH
Tops are 2 round black onix of 10 mm in diameter with small emerald round cabochons in the center,middle part in white gold,small full cut diamonds and red enamel,the bottom parts ar...
Category

1990s Thai Art Deco Ruby Jewelry

Materials

Diamond, Jade, Ruby, Gold, 18k Gold, Enamel

18 Karat Yellow Gold Ruby Sapphire and Diamond Earring and Stick Pin Set Estate
Located in New York, NY
18 Karat Yellow Gold Ruby Sapphire & Diamond Earring And Stick Pin Set Estate Each earring has one round Cabochon sapphire in the center and three rubies and three sapphires with brilliant cut diamonds to form a cross. Stick pin has same pattern on it. 18 K Yellow Gold 27 Gm Diamond approximately 1.8 ct...
Category

1990s Ruby Jewelry

Materials

Diamond, Ruby, Blue Sapphire, 18k Gold

Ruby and Diamond Cluster Ring Set in 18 Carat, Dated 1990, London Assay
Located in London, GB
Ruby and Diamond Cluster Ring set in 18ct, dated 1990, London Assay Never been worn, ex Hatton Garden manufacturers stock Ruby .85 Carat, diamonds .56 Carat.
Category

1990s British Modern Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

.50 Carat Tota Weight Ruby Yellow Gold Brooch
Located in Atlanta, GA
Item Details: Metal Type: 14 karat Yellow Gold [Tested] Weight: 2.4 grams Stone Details: Type: Ruby Weight: .50 carat, total weight Cut: Round Brilliant Color: Deep Red Clarity: V...
Category

1990s Unknown Retro Ruby Jewelry

Materials

Ruby, 14k Gold, Yellow Gold

Cartier Ruby Diamond Yellow Gold Ring and Earrings
Located in New York, NY
This elegant set of Cartier wrap earrings and band ring features faceted pear-cut rubies and sparkling square-cut diamonds set in 18k yellow gold. Simp...
Category

1990s French Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

Pair South Sea Pearl Diamond 18K Gold Bumble Bee Brooch Pins Fine Estate Jewelry
Located in Montreal, QC
Two Elegant & Finely detailed vintage Bumble Bee pins, each set with approximately 0.3747ctw in G/VS diamonds, enhancing the wings and body, a 1...
Category

1990s Modernist Ruby Jewelry

Materials

Diamond, South Sea Pearl, Ruby, 18k Gold

French Ruby Diamond Yellow Gold Ring
Located in Geneva, CH
Late 20th Century's design this lovely Oval Ruby centers a yellow gold 18k 750 ring surrounded by diamond. Red and Yellow colors are perfectly matching. French marks. Ring size: 6 US.
Category

1990s French Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Ruby and Diamond and Gold 37 Grams Cuff Bangle /Bracelet in 18 Karat White Gold
Located in New York, NY
Ruby & Diamond & Gold 37 Grams Cuff Bangle /Bracelet In 18 Karat White Gold It features a bangle style Bracelet crafted from an 18 Karat White gold and embedded with 7 Flowers out of...
Category

1990s Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

2.52 Oval Shaped Ruby and Diamond Ring
Located in New York, NY
Estate ring finely crafted in 18K white gold. It features a vibrant red 2.52 carat oval shaped ruby flanked by trillion cut diamonds, weighing a total of 1.05 carat. Circa 1990's.
Category

1990s Unknown Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold

14 Karat Yellow Gold Ruby 0.50 Carat Diamond Ring
Located in New York, NY
Diamonds and rubies together weighing .80 carat, join forces to create a fabulous flash in this retro era dazzler hand fabricated in rich 14K yellow gold - circa 1980. Currently ring...
Category

1990s Ruby Jewelry

Materials

Ruby, 14k Gold

Yellow Gold Natural Ruby Cabochon Diamond Ring, circa 1995
Located in Palm Desert, CA
18 Karat Yellow and White Gold Natural Ruby Cabochon Diamond Pavé Ring, Circa 1995. Gorgeous medium color natural Ruby cabochon with thirty-six round pavé set diamonds set in 14k whi...
Category

1990s American Retro Ruby Jewelry

Materials

Diamond, Ruby, 18k Gold, White Gold, 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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