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Diamonds Rubies 18 karat White Gold Drop Earrings
Diamonds Rubies 18 karat White Gold Drop Earrings

Diamonds Rubies 18 karat White Gold Drop Earrings

By SCALA GIOIELLI

Located in Marcianise, IT

a delicate row of square-cut rubies that adds a vibrant touch of color. The diamonds are

Category

Vintage 1930s Italian Art Nouveau Drop Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Art Deco Ruby and Diamond Star Ring
Art Deco Ruby and Diamond Star Ring

Art Deco Ruby and Diamond Star Ring

Located in London, GB

rose cut diamonds in platinum and square calibrated rubies in 18ct yellow gold. A single round faceted

Category

Vintage 1930s Art Deco Cluster Rings

Materials

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

Art Deco GIA 1.03 carat rose cut diamond ruby platinum engagement ring
Art Deco GIA 1.03 carat rose cut diamond ruby platinum engagement ring

Art Deco GIA 1.03 carat rose cut diamond ruby platinum engagement ring

Located in Beverly Hills, CA

diamonds that add depth and sparkle. Vivid calibre cut rubies introduce a striking contrast of rich red

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Retro Diamond Ruby Gold Ear Clip Earrings
Retro Diamond Ruby Gold Ear Clip Earrings

Retro Diamond Ruby Gold Ear Clip Earrings

Located in Beverly Hills, CA

An original retro piece from the 1930’s featuring European-cut diamonds and vivid red pigeon blood

Category

Vintage 1930s American Clip-on Earrings

Materials

Diamond, Ruby, Gold, White Gold, Yellow Gold

Art Deco Diamond Sapphire Ruby Platinum Butterfly Brooch
Art Deco Diamond Sapphire Ruby Platinum Butterfly Brooch

Art Deco Diamond Sapphire Ruby Platinum Butterfly Brooch

Located in Beverly Hills, CA

A stunning Art Deco pin brooch from the 1930’s that is impressively made with extreme quality, as

Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Ruby, Blue Sapphire, Platinum

Large Pennino Retro Ruby Spray
Large Pennino Retro Ruby Spray

Large Pennino Retro Ruby Spray

By Pennino Jewelry

Located in New York, NY

Large Pennino Retro Ruby Spray from the late 1930's. High style design, with leaves and sprays of

Category

Vintage 1930s American Retro Brooches

Materials

Vermeil, Rhodium

Art Deco No Heat Burma Ruby and Diamond Brooch
Art Deco No Heat Burma Ruby and Diamond Brooch

Art Deco No Heat Burma Ruby and Diamond Brooch

Located in Miami, FL

This exquisite Art Deco brooch features an AGL-certified natural no-heat ruby center stone

Category

Vintage 1930s Art Deco Brooches

Materials

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

Antique 1930s Diamond and Ruby White Gold Regimental Brooch
Antique 1930s Diamond and Ruby White Gold Regimental Brooch

Antique 1930s Diamond and Ruby White Gold Regimental Brooch

Located in Jesmond, Newcastle Upon Tyne

A fine and impressive antique 0.15 carat diamond and 0.02 carat ruby, 9 karat white gold RAF Staff

Category

Vintage 1930s Unknown Brooches

Materials

Diamond, Ruby, 9k Gold, White Gold

Art Deco Platinum Charm Bracelet with Multi-Gemstones, Circa 1930
Art Deco Platinum Charm Bracelet with Multi-Gemstones, Circa 1930

Art Deco Platinum Charm Bracelet with Multi-Gemstones, Circa 1930

Located in North Hollywood, CA

bracelet. The bracelet is large to fit a 7 to 8" wrist but can be cut down. There are Rubies, Sapphires

Category

Vintage 1930s Unknown Art Deco Charm Bracelets

Materials

Chalcedony, White Diamond, Moonstone, Multi-gemstone, Onyx, Ruby, Blue S...

Art Deco Diamond Ruby and Emerald Dress Ring
Art Deco Diamond Ruby and Emerald Dress Ring

Art Deco Diamond Ruby and Emerald Dress Ring

Located in London, GB

vibrant green emeralds and striking red rubies form a geometric pattern around the outer edge; all of

Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Ruby, Platinum

Early Marcel Boucher Ruby Lily
Early Marcel Boucher Ruby Lily

Early Marcel Boucher Ruby Lily

By Marcel Boucher

Located in New York, NY

Early Marcel Boucher Ruby Lily from the 1930's. Large striking floral spray with pave accents and

Category

Vintage 1930s American Art Deco Brooches

Materials

Rhodium, Gilt Metal

Art Deco Burmese Ruby and Diamond Ring In Platinum, GIA Certified.
Art Deco Burmese Ruby and Diamond Ring In Platinum, GIA Certified.

Art Deco Burmese Ruby and Diamond Ring In Platinum, GIA Certified.

Located in New York, NY

: Circa : 1930 Origin : Burmese ( Myanmar ) Ruby : 1.50 carats ( unheated ) Ruby baguettes : 0.30 carat

Category

Vintage 1930s European Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Art Deco Walter Lampl Ruby Sapphire Diamond Platinum Vintage Church House Charm
Art Deco Walter Lampl Ruby Sapphire Diamond Platinum Vintage Church House Charm

Art Deco Walter Lampl Ruby Sapphire Diamond Platinum Vintage Church House Charm

Located in Philadelphia, PA

blue Accented by a round cut ruby bezel set as rose window Weighing approximately 0.12 carat total

Category

Vintage 1930s Art Deco Charm Bracelets

Materials

Diamond, Ruby, Sapphire, Platinum

GIA 4.06 Ct Burma Ruby Diamond Platinum Antique Cocktail Ring
GIA 4.06 Ct Burma Ruby Diamond Platinum Antique Cocktail Ring

GIA 4.06 Ct Burma Ruby Diamond Platinum Antique Cocktail Ring

Located in Miami, FL

This Vintage ring is Geometrically filigree designed with a bottomless red Burmese Ruby; this can

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Art Deco Rock Crystal Ruby Diamond Platinum Brooch
Art Deco Rock Crystal Ruby Diamond Platinum Brooch

Art Deco Rock Crystal Ruby Diamond Platinum Brooch

Located in New York, NY

Unique Art Deco brooch from ca. 1930 in the form of a flower bouquet within a crystal vase

Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Rock Crystal, Ruby, Platinum

CARTIER 1930 Art Deco Charms Bracelet Platinum With 6.04 Ctw In Diamonds & Gems
CARTIER 1930 Art Deco Charms Bracelet Platinum With 6.04 Ctw In Diamonds & Gems

CARTIER 1930 Art Deco Charms Bracelet Platinum With 6.04 Ctw In Diamonds & Gems

By Cartier

Located in Miami, FL

charm's bracelet, created in Paris France by the jewelry house of Cartier, back in the 1930. The charm's

Category

Vintage 1930s French Art Deco Charm Bracelets

Materials

Diamond, Emerald, Ruby, Sapphire, White Diamond, Blue Sapphire, Platinum

Ruby Diamond and Gold Pendant 1930s From Ferdinand I, Tsar of Bulgaria
Ruby Diamond and Gold Pendant 1930s From Ferdinand I, Tsar of Bulgaria

Ruby Diamond and Gold Pendant 1930s From Ferdinand I, Tsar of Bulgaria

Located in Rugby, England

From the Collection of Ferdinand I, Tsar of Bulgaria (1861-1948) - Ruby, diamond and gold pendant

Category

Vintage 1930s Bulgarian Pendant Necklaces

Materials

Diamond, Ruby, Gold

Diamonds Rubies Yellow Gold 14 Karat Silver Pendant Necklace
Diamonds Rubies Yellow Gold 14 Karat Silver Pendant Necklace

Diamonds Rubies Yellow Gold 14 Karat Silver Pendant Necklace

Located in Marcianise, IT

Neapolitan master goldsmiths. Set in 14 Karat yellow gold and silver with rose-cut diamonds and rubies set

Category

Vintage 1930s Italian Artist Pendant Necklaces

Materials

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

Art Deco Certified Unheated Burmese Ruby Diamond Gold Ring
Art Deco Certified Unheated Burmese Ruby Diamond Gold Ring

Art Deco Certified Unheated Burmese Ruby Diamond Gold Ring

Located in Napoli, NA

Art Deco three stone 18k Gold ring set with a round cut unheated ruby, weighing 1.14 carats and 2

Category

Vintage 1930s European Art Deco Three-Stone Rings

Materials

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

Art Deco 3.16 CTW Diamond Ruby Platinum Vintage Arrow Engagement Ring GIA
Art Deco 3.16 CTW Diamond Ruby Platinum Vintage Arrow Engagement Ring GIA

Art Deco 3.16 CTW Diamond Ruby Platinum Vintage Arrow Engagement Ring GIA

Located in Philadelphia, PA

synthetic rubies Transparent medium pinkish red in color - calibré cut Accented by a pierced profile and an

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Art-Deco Platinum Burmese Ruby, Sapphire Diamond Reversible Swivel Eternity Band
Art-Deco Platinum Burmese Ruby, Sapphire Diamond Reversible Swivel Eternity Band

Art-Deco Platinum Burmese Ruby, Sapphire Diamond Reversible Swivel Eternity Band

Located in MELBOURNE, AU

sapphires to rubies, or a different colour combination. The design offers at least 7 distinct styles in

Category

Vintage 1930s Australian Art Deco Cluster Rings

Materials

Diamond, Ruby, Sapphire, Platinum

Art Deco Diamond Ruby Enamel Platinum Vintage Bird On A Swing Charm
Art Deco Diamond Ruby Enamel Platinum Vintage Bird On A Swing Charm

Art Deco Diamond Ruby Enamel Platinum Vintage Bird On A Swing Charm

Located in Philadelphia, PA

by a single baguette cut ruby bezel set on swing Weighing approximately 0.03 carat - transparent

Category

Vintage 1930s Art Deco Charm Bracelets

Materials

Diamond, Ruby, Platinum, Enamel

Art Deco Ruby and Diamond Cluster Ring
Art Deco Ruby and Diamond Cluster Ring

Art Deco Ruby and Diamond Cluster Ring

Located in London, GB

Here we have an elegant 18ct gold ring featuring a striking oval shaped ruby at the centre of the

Category

Vintage 1930s Art Deco Cluster Rings

Materials

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

Antique 1930s Ruby and Diamond Yellow Gold Unisex Ring
Antique 1930s Ruby and Diamond Yellow Gold Unisex Ring

Antique 1930s Ruby and Diamond Yellow Gold Unisex Ring

Located in Jesmond, Newcastle Upon Tyne

A stunning, fine and impressive antique 0.83 carat ruby and 0.40 carat diamond, 18 karat yellow

Category

Vintage 1930s Cocktail Rings

Materials

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

Art Deco Ruby and Diamond Target Drop Earrings
Art Deco Ruby and Diamond Target Drop Earrings

Art Deco Ruby and Diamond Target Drop Earrings

Located in London, GB

Here we have a stunning pair of Art Deco ruby and diamond earrings. Each piece showcases a single

Category

Vintage 1930s Art Deco Drop Earrings

Materials

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

Art Deco Flip over Ruby Sapphire Diamond Eternity Ring
Art Deco Flip over Ruby Sapphire Diamond Eternity Ring

Art Deco Flip over Ruby Sapphire Diamond Eternity Ring

Located in Napoli, NA

Beautiful Art Deco flip over eternity Ring, handmade in 18k white gold around 1930. It is set with

Category

Vintage 1930s European Art Deco Band Rings

Materials

Diamond, Ruby, Sapphire, Gold, 18k Gold

Antique Art Deco 1930s 8.50 Carat Ruby and 10.00 Carat Diamond Bracelet
Antique Art Deco 1930s 8.50 Carat Ruby and 10.00 Carat Diamond Bracelet

Antique Art Deco 1930s 8.50 Carat Ruby and 10.00 Carat Diamond Bracelet

Located in New York, NY

Rubies weighing a total of approximately 8.50 carats, GIA #2231191051. The bracelet also features Old

Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Ruby, Platinum

Deco period ruby and diamond earrings
Deco period ruby and diamond earrings

Deco period ruby and diamond earrings

Located in Milano, MI

and rubies. Lever back fastening. Highlights: - Deco period 1930s c.a. - Gold and platinum - Old cut

Category

Vintage 1930s Art Deco Lever-Back Earrings

Materials

Diamond, Ruby

Art Deco Platinum Ladies Ring with 1.50 Carat Diamond and Rubies, 1930s
Art Deco Platinum Ladies Ring with 1.50 Carat Diamond and Rubies, 1930s

Art Deco Platinum Ladies Ring with 1.50 Carat Diamond and Rubies, 1930s

Located in Braintree, GB

Art Deco platinum ladies ring with 1.50 ct diamond and rubies Circa 1930's Tested positive for

Category

Vintage 1930s Art Deco Cluster Rings

Materials

Diamond, Ruby, Platinum

Trifari Ruby Baguette Spray, Alfred Phillipe
Trifari Ruby Baguette Spray, Alfred Phillipe

Trifari Ruby Baguette Spray, Alfred Phillipe

By Alfred Philippe for Trifari

Located in New York, NY

Lovely Trifari Ruby Baguette Spray from the 1930's by Alfred Phillipe. Ruby pear shaped pastes form

Category

Vintage 1930s American Art Deco Brooches

Materials

Rhodium

American Antique Art Deco 14k Tricolor Gold Burmese Ruby Band, 1930s
American Antique Art Deco 14k Tricolor Gold Burmese Ruby Band, 1930s

American Antique Art Deco 14k Tricolor Gold Burmese Ruby Band, 1930s

Located in Santa Monica, CA

American Antique Art Deco 14k Tricolor Gold Burmese Ruby Band 30s Finger size: 6.5 Width: 8mm

Category

Vintage 1930s American Art Deco Band Rings

Materials

Ruby, Gold

Lacloche Ruby and Diamond Ring
Lacloche Ruby and Diamond Ring

Lacloche Ruby and Diamond Ring

By LaCloche

Located in New York, NY

Lacloche Ruby and Diamond Ring This exceptional ring by Lacloche Frères is a brilliant example of

Category

Vintage 1930s French Retro Retro Bracelets

Materials

Diamond, Ruby, 18k Gold

Art Deco Platinum Diamond Ruby Bracelet
Art Deco Platinum Diamond Ruby Bracelet

Art Deco Platinum Diamond Ruby Bracelet

Located in New York, NY

vibrant red square rubies and bright white round and baguette diamonds are set in platinum flexible links

Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Ruby, Platinum

Circa 1930s Art Deco Ruby and Rose Cut Diamond Earrings
Circa 1930s Art Deco Ruby and Rose Cut Diamond Earrings

Circa 1930s Art Deco Ruby and Rose Cut Diamond Earrings

Located in Hicksville, NY

Diamond Details: Weight: .30cttw Cut: Rose Cut Color: J/K Clarity: SI/I Ruby Details: Natural Ruby Weight

Category

Vintage 1930s Art Deco Drop Earrings

Materials

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

Art Deco 6.43 CTW Old European Diamond Ruby Platinum X Engagement Ring GIA
Art Deco 6.43 CTW Old European Diamond Ruby Platinum X Engagement Ring GIA

Art Deco 6.43 CTW Old European Diamond Ruby Platinum X Engagement Ring GIA

Located in Philadelphia, PA

prongs and flanked by rows of calibré cut ruby shoulders and 'X' motif profile Weighing approximately

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Ruby, Platinum

Art Deco diamond and ruby earrings
Art Deco diamond and ruby earrings

Art Deco diamond and ruby earrings

Located in Milano, MI

Art Deco period earrings set in gold and platinum with old mine cut diamonds and drop cut rubies of

Category

Vintage 1930s European Lever-Back Earrings

Materials

Diamond, Ruby, 18k Gold

Retro Moonstone Ruby Diamond Gold Choker Necklace
Retro Moonstone Ruby Diamond Gold Choker Necklace

Retro Moonstone Ruby Diamond Gold Choker Necklace

Located in Beverly Hills, CA

A spectacular original retro piece from the late 1930’s. It features a suite of 15 fine moonstones

Category

Vintage 1930s American Choker Necklaces

Materials

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

Art deco natural Burmese ruby and diamond ring, circa 1935.
Art deco natural Burmese ruby and diamond ring, circa 1935.

Art deco natural Burmese ruby and diamond ring, circa 1935.

Located in London, GB

Art deco natural Burmese ruby and diamond ring. Set with an octagonal double brilliant cut natural

Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, Ruby, Platinum

1930s Art Deco Platinum Untreated Burmese Ruby and Diamond Ring
1930s Art Deco Platinum Untreated Burmese Ruby and Diamond Ring

1930s Art Deco Platinum Untreated Burmese Ruby and Diamond Ring

Located in Houston, TX

An Art Deco platinum and ruby and bead-set diamond ring with calibré-cut rubies, circa 1930. Ring

Category

Vintage 1930s Unknown Art Deco Cocktail Rings

Materials

Diamond, Ruby, Platinum

Circa 1930s Art Deco Platinum and Palladium Natural Ruby and Diamond Bracelet
Circa 1930s Art Deco Platinum and Palladium Natural Ruby and Diamond Bracelet

Circa 1930s Art Deco Platinum and Palladium Natural Ruby and Diamond Bracelet

Located in Hicksville, NY

Details: Type: Ruby, Natural, Intense Reddish Pink Info: 4.00ct total weight, Bracelet Length Measurement

Category

Vintage 1930s Art Deco Link Bracelets

Materials

Diamond, Ruby, Palladium, Platinum

1930s Oval Cut Ruby and Diamond Yellow Gold Cocktail Ring
1930s Oval Cut Ruby and Diamond Yellow Gold Cocktail Ring

1930s Oval Cut Ruby and Diamond Yellow Gold Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

A fine and impressive antique 0.60 carat natural ruby and 0.59 carat diamond, 14 karat yellow gold

Category

Vintage 1930s Unknown Cocktail Rings

Materials

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

Burmese ruby and diamond earrings, circa 1935
Burmese ruby and diamond earrings, circa 1935

Burmese ruby and diamond earrings, circa 1935

Located in London, GB

Burmese ruby and diamond earrings. A matching pair of earrings, each set with a cushion shape old

Category

Vintage 1930s Dangle Earrings

Materials

Diamond, Ruby, Platinum

Art Deco 1930 Eleven Charms Bracelet in Platinum Enamel with 3.48ctw in Diamond
Art Deco 1930 Eleven Charms Bracelet in Platinum Enamel with 3.48ctw in Diamond

Art Deco 1930 Eleven Charms Bracelet in Platinum Enamel with 3.48ctw in Diamond

Located in Miami, FL

deco period, back in the 1930. It was crafted with beautiful craftsmanship in solid .900/.999 platinum

Category

Vintage 1930s American Art Deco Charm Bracelets

Materials

Diamond, White Diamond, Emerald, Ruby, Sapphire, Blue Sapphire, Platinum...

Early Boucher Pave and Ruby Cab Spray
Early Boucher Pave and Ruby Cab Spray

Early Boucher Pave and Ruby Cab Spray

By Marcel Boucher

Located in New York, NY

Early Boucher Pave and Ruby Cab Floral Spray from the 1930's. Delicate pave blooms in elaborate

Category

Vintage 1930s American Art Deco Brooches

Materials

Rhodium

Art Deco Diamond Ruby Enamel 18 Karat White Gold Vintage Torch Charm
Art Deco Diamond Ruby Enamel 18 Karat White Gold Vintage Torch Charm

Art Deco Diamond Ruby Enamel 18 Karat White Gold Vintage Torch Charm

Located in Philadelphia, PA

rubies - channel set With additional round ruby cabochons bezel set at corners Weighing approximately

Category

Vintage 1930s Art Deco Charm Bracelets

Materials

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

Antique Ruby and Old-Cut ring
Antique Ruby and Old-Cut ring

Antique Ruby and Old-Cut ring

Located in Firenze, FI

An old Unique ring in the shape of a flower, made of Gold and Silver , covered on top by Ruby

Category

Vintage 1930s Artisan Cocktail Rings

Materials

Ruby, 10k Gold, Silver

Platinum, Ruby and Diamond Bombé Ring
Platinum, Ruby and Diamond Bombé Ring

Platinum, Ruby and Diamond Bombé Ring

Located in New York, NY

38 round & single-cut diamonds ap. .75 cts., 38 square-cut rubies, ap. 1.80 cts c. 1930, ap. 3.1

Category

Vintage 1930s Art Deco More Rings

Materials

Diamond, Ruby, Platinum

Marcel Boucher Sterling Faux Ruby Earrings
Marcel Boucher Sterling Faux Ruby Earrings

Marcel Boucher Sterling Faux Ruby Earrings

By Marcel Boucher

Located in New York, NY

Early Boucher Faux Ruby Earrings in sterling with rhodium plate finish. Faux rubies are channel set

Category

Vintage 1930s American Art Deco Clip-on Earrings

Materials

Rhodium, Sterling Silver

Boucheron Natural Burma Ruby Diamond Ring
Boucheron Natural Burma Ruby Diamond Ring

Boucheron Natural Burma Ruby Diamond Ring

By Boucheron

Located in London, GB

Boucheron Burmese ruby and diamond ring. Set to centre with a cushion shape old cut natural

Category

Vintage 1930s French Engagement Rings

Materials

Diamond, Ruby, Platinum

Art Deco Pennino Peridot and Ruby Paste Spray
Art Deco Pennino Peridot and Ruby Paste Spray

Art Deco Pennino Peridot and Ruby Paste Spray

By Pennino Jewelry

Located in New York, NY

Lovely Art Deco Pennino Peridot and Ruby Paste Spray from the 1930's. Floral spray of bezel set

Category

Vintage 1930s American Art Deco Brooches

Materials

Rhodium

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Ruby 1930 For Sale on 1stDibs

Surely you’ll find the exact ruby 1930 you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using Platinum, Gold and 18k Gold. You can easily find a 817 antique edition and 2 modern creations to choose from as well. If you’re looking for a ruby 1930 from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but 1 Carat and 1.5 Carat versions are of considerable interest. There have been many well-made iterations of the classic ruby 1930 over the years, but those made by Cartier, Tiffany & Co. and Van Cleef & Arpels are often thought to be among the most beautiful. A round cut version of this piece has appeal, but there are also oval cut and old european cut versions for sale. Most of our ruby 1930 for sale are for women, but there are 168 pieces available to browse for men.

How Much is a Ruby 1930?

Prices for a ruby 1930 can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $200 and can go as high as $362,016, while this accessory, on average, fetches $6,487.

The Legacy of Ruby in Jewelry Design

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.