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Emilio Jewelry Certified 5 Carat No Heat Vivid Red Ruby Ring
Emilio Jewelry Certified 5 Carat No Heat Vivid Red Ruby Ring

Emilio Jewelry Certified 5 Carat No Heat Vivid Red Ruby Ring

By Emilio!

Located in New York, NY

heat mozambique origin, over 5.00 carat Vivid to Deep Red (PIGEON BLOOD) CUSHION Setting: 4 white

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Emilio Jewelry Certified 110.00 Carat Burma No Heat Vivid Red Ruby Necklace
Emilio Jewelry Certified 110.00 Carat Burma No Heat Vivid Red Ruby Necklace

Emilio Jewelry Certified 110.00 Carat Burma No Heat Vivid Red Ruby Necklace

By Emilio!

Located in New York, NY

! Center Stone: No heat burma pigeon blood just over 7.00 carat RED OVAL Setting: 59 rubies totaling about

Category

21st Century and Contemporary Choker Necklaces

Materials

Ruby

Antique Gold & Platinum AGL Burma No Heat Vivid Red Ruby Diamond Halo Ring
Antique Gold & Platinum AGL Burma No Heat Vivid Red Ruby Diamond Halo Ring

Antique Gold & Platinum AGL Burma No Heat Vivid Red Ruby Diamond Halo Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Ruby - Oval Cut - Prong Set - Rare Vivid Red Color - No Heat

Category

Antique 19th Century Cocktail Rings

Materials

Diamond, Ruby, Gold, Yellow Gold, Platinum

Exceptional GRS Certified 2.60ct No-Heat Vivid Red Ruby and High-Jewelry Ring
Exceptional GRS Certified 2.60ct No-Heat Vivid Red Ruby and High-Jewelry Ring

Exceptional GRS Certified 2.60ct No-Heat Vivid Red Ruby and High-Jewelry Ring

By Antinori Fine Jewels

Located in Chicago, IL

rubies. Most significantly, the ruby boasts an "Intense to Vivid Red" color grading—a deeply saturated

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Ruby, Platinum

GIA Certified 5.32 Carat Burma No Heat Vivid Red Ruby Diamond Gold Earrings
GIA Certified 5.32 Carat Burma No Heat Vivid Red Ruby Diamond Gold Earrings

GIA Certified 5.32 Carat Burma No Heat Vivid Red Ruby Diamond Gold Earrings

Located in Kowloon, Hong Kong

5.32 ct Burma No Heat Ruby & Diamond Chandelier Earrings (GIA Certified) Indulge in commanding

Category

2010s Chandelier Earrings

Materials

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

18k Yellow Gold GIA 1.26ctw High Quality No Heat Vivid Red Ruby Diamond Ring
18k Yellow Gold GIA 1.26ctw High Quality No Heat Vivid Red Ruby Diamond Ring

18k Yellow Gold GIA 1.26ctw High Quality No Heat Vivid Red Ruby Diamond Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Ruby - Cushion Cut - Prong Set - Vivid Red Color - Clean - High

Category

21st Century and Contemporary Engagement Rings

Materials

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

AIGS Certified 1.12 Carat Natural No Heat, Vivid Red Ruby Ring made in Platinum
AIGS Certified 1.12 Carat Natural No Heat, Vivid Red Ruby Ring made in Platinum

AIGS Certified 1.12 Carat Natural No Heat, Vivid Red Ruby Ring made in Platinum

Located in Tokyo, JP

Gems. Early cultures treasured rubies for their similarity to the redness of the blood that flowed

Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 2.02 Carat Burma No Heat Vivid Red Ruby Diamond 18K Gold Ring
GIA Certified 2.02 Carat Burma No Heat Vivid Red Ruby Diamond 18K Gold Ring

GIA Certified 2.02 Carat Burma No Heat Vivid Red Ruby Diamond 18K Gold Ring

Located in Kowloon, Hong Kong

Institute of America (GIA), this unheated, natural ruby boasts an intense red hue, great clarity, and a

Category

2010s Modern Solitaire Rings

Materials

Ruby, Diamond, 18k Gold

18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate
18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate

18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate

Located in Antwerp, BE

Magnificent 18kt White Gold 4.02ct No Heat Vivid Red Ruby Ring, With 1.52ct Diamonds With CGL

Category

21st Century and Contemporary Artisan Engagement Rings

Materials

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

GIA Certified 1.55 Carat Burma No Heat Natural Oval Cut Ruby
GIA Certified 1.55 Carat Burma No Heat Natural Oval Cut Ruby

GIA Certified 1.55 Carat Burma No Heat Natural Oval Cut Ruby

Located in Kowloon, Hong Kong

This beautiful 1.55 carat Burma no-heat vivid red ruby is a rare and valuable gemstone

Category

2010s Loose Gemstones

Materials

Ruby

GIA Certified 1.99 Carat Burma No Heat Natural Oval Cut Ruby
GIA Certified 1.99 Carat Burma No Heat Natural Oval Cut Ruby

GIA Certified 1.99 Carat Burma No Heat Natural Oval Cut Ruby

Located in Kowloon, Hong Kong

This beautiful 1.99 carat Burma no-heat vivid red ruby is a rare and valuable gemstone

Category

2010s Loose Gemstones

Materials

Ruby

GIA Certified 1.54 Carat Burma No Heat Ruby White Diamond Platinum Ring
GIA Certified 1.54 Carat Burma No Heat Ruby White Diamond Platinum Ring

GIA Certified 1.54 Carat Burma No Heat Ruby White Diamond Platinum Ring

Located in Kowloon, Hong Kong

vivid Burmese no heat vivid red ruby, a gem that pulses with the fiery heartbeat of passion and rare

Category

2010s Modern Engagement Rings

Materials

White Diamond, Ruby, Platinum

SSEF Certified 2.59 Carat Burma Mogok No Heat Ruby White Diamond Platinum Ring
SSEF Certified 2.59 Carat Burma Mogok No Heat Ruby White Diamond Platinum Ring

SSEF Certified 2.59 Carat Burma Mogok No Heat Ruby White Diamond Platinum Ring

Located in Kowloon, Hong Kong

oval-cut vivid Burmese no heat vivid red ruby originating from the Mogok mining region, a gem that

Category

2010s Modern Engagement Rings

Materials

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

Gubelin Certified 2.22 Carat Burma Mogok No Heat Ruby White Diamond Gold Ring
Gubelin Certified 2.22 Carat Burma Mogok No Heat Ruby White Diamond Gold Ring

Gubelin Certified 2.22 Carat Burma Mogok No Heat Ruby White Diamond Gold Ring

Located in Kowloon, Hong Kong

carat oval-cut vivid Burmese no heat vivid red ruby originating from the Mogok mining region, a gem that

Category

2010s Modern Engagement Rings

Materials

White Diamond, Ruby, Gold, 18k Gold

GRS Certified 4 Carat Vivid Red NO HEAT Ruby Ring
GRS Certified 4 Carat Vivid Red NO HEAT Ruby Ring

GRS Certified 4 Carat Vivid Red NO HEAT Ruby Ring

By Antinori Fine Jewels

Located in Chicago, IL

4.00-Carat Vivid Red NO HEAT Ruby Unheated – Mozambique – GIA Certified Experience the pinnacle of

Category

2010s American Modern Three-Stone Rings

Materials

Diamond, Ruby

GRS Certified 3.01 Carat Vivid Red No-Heat Ruby Ring
GRS Certified 3.01 Carat Vivid Red No-Heat Ruby Ring

GRS Certified 3.01 Carat Vivid Red No-Heat Ruby Ring

By Antinori Fine Jewels

Located in Chicago, IL

GRS Certified 3.01 Carat Vivid Red No-Heat Ruby Ring with Pear Cut Diamonds in Platinum An

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry Certified No Heat Untreated Vivid Red Ruby Ring
Emilio Jewelry Certified No Heat Untreated Vivid Red Ruby Ring

Emilio Jewelry Certified No Heat Untreated Vivid Red Ruby Ring

By Emilio!

Located in New York, NY

. Certified by Grs as No Oil untreated, and Vivid Green color along with a very special appendix written on

Category

21st Century and Contemporary Three-Stone Rings

Materials

Emerald, Ruby

Valentine's GRS Certified Heart VIVID RED NO HEAT Ruby Diamond Necklace
Valentine's GRS Certified Heart VIVID RED NO HEAT Ruby Diamond Necklace

Valentine's GRS Certified Heart VIVID RED NO HEAT Ruby Diamond Necklace

By Antinori Fine Jewels

Located in Chicago, IL

carats, cut in a heart shape and displaying a vivid red color. Gemmological testing confirms the ruby to

Category

2010s American Pendant Necklaces

Materials

Diamond, White Diamond, Ruby, Platinum

GRS Certified 5.94 Carat No Heat Vivid Orangy-Red Loose Ruby
GRS Certified 5.94 Carat No Heat Vivid Orangy-Red Loose Ruby

GRS Certified 5.94 Carat No Heat Vivid Orangy-Red Loose Ruby

Located in Miami, FL

rich, vivid-red color hues that captivate the eye. A true gem. - GRS Report Number: GRS2017-128961

Category

2010s Mozambican Loose Gemstones

Materials

Ruby

Platinum GIA 1.45ct Vivid Red Ruby Pear No Heat & Diamond Sides Ring
Platinum GIA 1.45ct Vivid Red Ruby Pear No Heat & Diamond Sides Ring

Platinum GIA 1.45ct Vivid Red Ruby Pear No Heat & Diamond Sides Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Ruby - Well Cut - Pear Cut - Prong Set - Vivid Clean Pure Red

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry Grs Certified 8.00 Carat Vivid Red No Heat Ruby Ring
Emilio Jewelry Grs Certified 8.00 Carat Vivid Red No Heat Ruby Ring

Emilio Jewelry Grs Certified 8.00 Carat Vivid Red No Heat Ruby Ring

By Emilio!

Located in New York, NY

specializes in only the most valuable, rare one of kind pieces. Center Stone: 8.00ct + Vivid to Deep Red OVAL

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

GRS Certified 4 VIVID TO DEEP RED NO HEAT Ruby Diamond Ring
GRS Certified 4 VIVID TO DEEP RED NO HEAT Ruby Diamond Ring

GRS Certified 4 VIVID TO DEEP RED NO HEAT Ruby Diamond Ring

Located in Chicago, IL

🔥 Exquisite Rarity: 4 Carat GRS-Certified Vivid to Deep Red Unheated Ruby & Diamond Ring 🔥

Category

2010s American Band Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 4 Carat Vivid Red Ruby No Heat Diamond Cocktail Ring
GIA Certified 4 Carat Vivid Red Ruby No Heat Diamond Cocktail Ring

GIA Certified 4 Carat Vivid Red Ruby No Heat Diamond Cocktail Ring

By Antinori Fine Jewels

Located in Chicago, IL

: Faceted Shape: Square Cushion Color: Vivid to Deep Pink-Red Transparency: Transparent Clarity Grade: Eye

Category

2010s Italian Modern Cocktail Rings

Materials

Diamond, White Diamond, Ruby, Platinum

Platinum High Quality GIA 2.04ct No Heat Oval Vivid Red Ruby & Diamond Ring
Platinum High Quality GIA 2.04ct No Heat Oval Vivid Red Ruby & Diamond Ring

Platinum High Quality GIA 2.04ct No Heat Oval Vivid Red Ruby & Diamond Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Ruby - Oval Cut - Prong Set - Vivid Clean Red Color - Well Cut

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

GRS-Certified 4.20 Carat Vivid Red Heart-Shaped Ruby Stud Earrings NO HEAT
GRS-Certified 4.20 Carat Vivid Red Heart-Shaped Ruby Stud Earrings NO HEAT

GRS-Certified 4.20 Carat Vivid Red Heart-Shaped Ruby Stud Earrings NO HEAT

Located in Chicago, IL

GRS-Certified 4.20 Carat Vivid Red Heart-Shaped Ruby Stud Earrings Set in Platinum An

Category

2010s American Contemporary Stud Earrings

Materials

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

3.29 Carat Burma No Heat Vivid Red Pigeon's Blood GRS Certified Ruby Ring
3.29 Carat Burma No Heat Vivid Red Pigeon's Blood GRS Certified Ruby Ring

3.29 Carat Burma No Heat Vivid Red Pigeon's Blood GRS Certified Ruby Ring

By Antinori Fine Jewels

Located in Chicago, IL

Introducing our exquisite 3.29-carat Burma No Heat Vivid Red Pigeon's Blood GRS Certified Ruby Ring

Category

2010s Unknown Contemporary Engagement Rings

Materials

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

3.63-carat Natural Burma Mogok No Heat Vivid Red GRS Cushion Ruby Ring
3.63-carat Natural Burma Mogok No Heat Vivid Red GRS Cushion Ruby Ring

3.63-carat Natural Burma Mogok No Heat Vivid Red GRS Cushion Ruby Ring

By Antinori Fine Jewels

Located in Chicago, IL

the 3.63-carat Natural Burma Mogok No Heat Vivid Red GRS Cushion Ruby Ring, a true testament to

Category

2010s Italian Modern Engagement Rings

Materials

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

GRS Certified 5.00 Carat Vivid to Deep Red Ruby and Diamond Ring  NO HEAT
GRS Certified 5.00 Carat Vivid to Deep Red Ruby and Diamond Ring  NO HEAT

GRS Certified 5.00 Carat Vivid to Deep Red Ruby and Diamond Ring NO HEAT

Located in Chicago, IL

GRS Certified 5.00 Carat Vivid to Deep Red Ruby and Diamond Ring An extraordinary treasure of

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Ruby, Platinum

GIA GRS Certified 6.61 Carat  Vivid Red Oval Ruby Diamond Ring BURMA NO HEAT
GIA GRS Certified 6.61 Carat  Vivid Red Oval Ruby Diamond Ring BURMA NO HEAT

GIA GRS Certified 6.61 Carat Vivid Red Oval Ruby Diamond Ring BURMA NO HEAT

By Antinori Fine Jewels

Located in Chicago, IL

Centering on a vivid red ruby heart shaped ruby framed by two rows of diamonds this stone is

Category

2010s Italian Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Ruby

14k White Gold C. Dunaigre 1.33ct No Heat Vivid Red Round Ruby Diamond Halo Ring
14k White Gold C. Dunaigre 1.33ct No Heat Vivid Red Round Ruby Diamond Halo Ring

14k White Gold C. Dunaigre 1.33ct No Heat Vivid Red Round Ruby Diamond Halo Ring

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Ruby - Round Brilliant Cut - Prong Set - Vivid Red Color - Really

Category

21st Century and Contemporary Cocktail Rings

Materials

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

Emilio Jewelry Grs Certified Vivid Red Burma No Heat 38.00 Carat Bracelet
Emilio Jewelry Grs Certified Vivid Red Burma No Heat 38.00 Carat Bracelet

Emilio Jewelry Grs Certified Vivid Red Burma No Heat 38.00 Carat Bracelet

By Emilio!

Located in New York, NY

! Each and every ruby is Grs Certified as Burma No Heat Vivid Red/Pigeons Blood Investment Quality

Category

21st Century and Contemporary Link Bracelets

Materials

Ruby

Pigeon's Blood No Heat Ruby Diamond White Gold Ring
Pigeon's Blood No Heat Ruby Diamond White Gold Ring

Pigeon's Blood No Heat Ruby Diamond White Gold Ring

Located in San Francisco, CA

features a vivid-intense color no heat pear-shaped ruby weighing 1.02 carats, framed by round brilliant and

Category

21st Century and Contemporary Unknown Cocktail Rings

Materials

Ruby, 18k Gold, White Gold

GIA Certified 2.01 Carat Ruby No Heat Scintillating Red Classical Solitaire Ring
GIA Certified 2.01 Carat Ruby No Heat Scintillating Red Classical Solitaire Ring

GIA Certified 2.01 Carat Ruby No Heat Scintillating Red Classical Solitaire Ring

By Malpani Jewels

Located in Hung Hom, HK

scintillating red hue, a hallmark of Mozambique's finest rubies. Certified as "No Heat," this ruby retains its

Category

2010s Japanese Art Nouveau Engagement Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry Certified Burma No Heat Ruby Earrings
Emilio Jewelry Certified Burma No Heat Ruby Earrings

Emilio Jewelry Certified Burma No Heat Ruby Earrings

By Emilio!

Located in New York, NY

: 1.40 carat Vivid Red (PIGEON BLOOD) OVAL, 1.36 carat Vivid Red (PIGEON BLOOD) OVAL Matching: 8 white

Category

21st Century and Contemporary Stud Earrings

Materials

Ruby

Emilio Jewelry Certified Burma No Heat Ruby Ring
Emilio Jewelry Certified Burma No Heat Ruby Ring

Emilio Jewelry Certified Burma No Heat Ruby Ring

By Emilio!

Located in New York, NY

carat + Certified as Vivid Red Pigeon Blood" Matching: 16 white diamonds totaling about 2.59 carats

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

3.01 Carat Burma (No-Heat) Ruby Cocktail Ring in PT 900
3.01 Carat Burma (No-Heat) Ruby Cocktail Ring in PT 900

3.01 Carat Burma (No-Heat) Ruby Cocktail Ring in PT 900

Located in Bangkok, TH

most natural and unaltered beauty. The ruby’s vivid red hue radiates passion and depth, enhanced by

Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Ruby, Platinum

Burma No Heat Vivid Red Spinel Beads Blue Zircon Diamond 18K White Gold Earrings
Burma No Heat Vivid Red Spinel Beads Blue Zircon Diamond 18K White Gold Earrings

Burma No Heat Vivid Red Spinel Beads Blue Zircon Diamond 18K White Gold Earrings

Located in Kowloon, Hong Kong

-Heat Vivid Red Spinel Beads: Renowned for their unparalleled intensity and fire, these spinel beads

Category

2010s Hoop Earrings

Materials

Diamond, Spinel, Zircon, Blue Zircon, 18k Gold, White Gold

5.94 Carat Natural Red No Heat Ruby Diamond Dangle Earrings 14 Karat Unheated
5.94 Carat Natural Red No Heat Ruby Diamond Dangle Earrings 14 Karat Unheated

5.94 Carat Natural Red No Heat Ruby Diamond Dangle Earrings 14 Karat Unheated

Located in New York, NY

Diamond Custer Dangles & No heat Rubies (6) 3.14ct. Natural Vivid Red Rubies 6.3 X 4.5mm (average

Category

2010s American Dangle Earrings

Materials

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

Emilio Jewelry Certified No Heat 6.00 Carat Ruby Ring
Emilio Jewelry Certified No Heat 6.00 Carat Ruby Ring

Emilio Jewelry Certified No Heat 6.00 Carat Ruby Ring

Located in New York, NY

untouched beauty, featuring an alluring deep Vivid Red color that captivates the eye. Unlike treated rubies

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby, 18k Gold

AGL Certified 1.76 Carat Pigeon's Blood Red No Heat Classic Burma Ruby Ring
AGL Certified 1.76 Carat Pigeon's Blood Red No Heat Classic Burma Ruby Ring

AGL Certified 1.76 Carat Pigeon's Blood Red No Heat Classic Burma Ruby Ring

By Gad & Co.

Located in Miami, FL

AGL Certified 1.76 Carat Cushion Cut Pigeon's Blood Red No Heat Burma Ruby & Diamond Ring in 18k

Category

20th Century Burmese Art Deco Three-Stone Rings

Materials

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

Bora & Co 2.36ct Burma No Heat Ruby with Rose Cut Natural Diamonds
Bora & Co 2.36ct Burma No Heat Ruby with Rose Cut Natural Diamonds

Bora & Co 2.36ct Burma No Heat Ruby with Rose Cut Natural Diamonds

Located in New York, NY

, celebrated for its vivid purple red hue and natural purity. Surrounding the ruby are 1.66 carats of VS white

Category

2010s Burmese Fashion Rings

Materials

Diamond, Ruby, 18k Gold

No-Heat Burmese Ruby & Diamond Ring, AGL & Gübelin Certified
No-Heat Burmese Ruby & Diamond Ring, AGL & Gübelin Certified

No-Heat Burmese Ruby & Diamond Ring, AGL & Gübelin Certified

Located in New York, NY

exceptional quality — oval-shaped, no-heat, and certified by both the Gübelin Gem Lab and AGL. The ruby

Category

2010s American Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

1.81 Carat No-Heat Burmese Ruby Diamond Platinum Ring, GIA Certified
1.81 Carat No-Heat Burmese Ruby Diamond Platinum Ring, GIA Certified

1.81 Carat No-Heat Burmese Ruby Diamond Platinum Ring, GIA Certified

Located in Beverly Hills, CA

bright vivid pinkish-red color with excellent clarity as the stone is eye clean. Adding to that, it is

Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Ruby

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No Heat Vivid Red Ruby For Sale on 1stDibs

Find the exact no heat vivid red ruby you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, Platinum and White Gold, this item was constructed with great care. Our collection of these items for sale includes 1 vintage editions and 11 modern creations to choose from as well. Finding the perfect no heat vivid red ruby may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. For this particular piece, 2.5 Carat and 3 Carat are consistently popular carat weights. Creating a no heat vivid red ruby has been a part of the legacy of many jewelers, but those produced by Antinori Fine Jewels, Harbor Diamonds and Emilio! are consistently popular. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes cushion cut and octagon cut alternatives. Finding a no heat vivid red ruby for sale for women should be easy, but there are 11 pieces available to browse for unisex as well as men, too.

How Much is a No Heat Vivid Red Ruby?

Prices for a no heat vivid red ruby can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $9,000 and can go as high as $141,875, while this accessory, on average, fetches $26,000.

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.