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1960s Burmese Ruby and Diamond Earrings
1960s Burmese Ruby and Diamond Earrings

1960s Burmese Ruby and Diamond Earrings

Located in New York, NY

A Garland Around Red Fire Platinum gathers into a bright, floral movement around two vivid Burmese rubies.

Category

Vintage 1960s Drop Earrings

Materials

Diamond, Ruby, Platinum

12ct Natural Ruby Diamonds Bracelet 14kt*
12ct Natural Ruby Diamonds Bracelet 14kt*

12ct Natural Ruby Diamonds Bracelet 14kt*

Located in New York, NY

Rounds, full cuts Clean clarity Transparent & Vivid Reds. Average 4.6mm each Ranging Purple-Pink-Red Ranging No Heat- Heat Enhancement. 2ct Natural Diamonds Rounds & ...

Category

2010s American Tennis Bracelets

Materials

Diamond, Ruby, 14k Gold, White Gold

18K Gold 0.29ct Squared Ruby & 0.20ct Diamond Contemporary Band Ring
18K Gold 0.29ct Squared Ruby & 0.20ct Diamond Contemporary Band Ring

18K Gold 0.29ct Squared Ruby & 0.20ct Diamond Contemporary Band Ring

Located in เกาะสมุย, TH

Dainty and easy to wear with other rings- decorated with a petite yet precious ruby from Thailand of vivid red color. PRICE NOT INCLUDING CUSTOMS DUTIES AND IMPORT TAX We welcome re...

Category

20th Century Asian Band Rings

Materials

Ruby, Diamond, 18k Gold

18K White Gold 1.07ct Oval Ruby & 0.24ct Baguette Diamond Band Ring
18K White Gold 1.07ct Oval Ruby & 0.24ct Baguette Diamond Band Ring

18K White Gold 1.07ct Oval Ruby & 0.24ct Baguette Diamond Band Ring

Located in เกาะสมุย, TH

A striking 18k white gold fine band ring showcasing a vivid 1.07‑carat oval orangish‑red ruby, accented by six baguette‑cut diamonds totaling 0.24 carats.

Category

20th Century Thai Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Vintage 1.34ct Squared Ruby 3 Channel Row Sterling Silver Wide Split Shank Ring
Vintage 1.34ct Squared Ruby 3 Channel Row Sterling Silver Wide Split Shank Ring

Vintage 1.34ct Squared Ruby 3 Channel Row Sterling Silver Wide Split Shank Ring

Located in เกาะสมุย, TH

Vintage sterling silver wide‑band ring set with 1.34 carats of square‑cut rubies in a bold three‑row channel design. The sculptural split‑shank silhouette gives the piece lift and mo...

Category

21st Century and Contemporary Thai Cocktail Rings

Materials

Quartz, Ruby, Sterling Silver

Exceptional 1.10 carats Unheated Ruby - Swiss Certified
Exceptional 1.10 carats Unheated Ruby - Swiss Certified

Exceptional 1.10 carats Unheated Ruby - Swiss Certified

Located in London, GB

Certified by Gem Research Swisslab (GRS), this beautiful ruby displays a deep and vivid red, with saturation and tone perfectly balanced, offering a rich brilliance.

Category

21st Century and Contemporary British Loose Gemstones

Materials

Ruby

11 Carat Oval Cut Burma Pink Ruby & Diamond Cluster Dome Ring
11 Carat Oval Cut Burma Pink Ruby & Diamond Cluster Dome Ring

11 Carat Oval Cut Burma Pink Ruby & Diamond Cluster Dome Ring

Located in Miami, FL

Ring size 7. The Ruby has a charming vivid saturation of red with pink undertones.

Category

21st Century and Contemporary Modern Dome Rings

Materials

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

AIGS 18k White Gold 1.26ct Oval Thai Ruby & 0.74ct Diamond Cocktail Band Ring
AIGS 18k White Gold 1.26ct Oval Thai Ruby & 0.74ct Diamond Cocktail Band Ring

AIGS 18k White Gold 1.26ct Oval Thai Ruby & 0.74ct Diamond Cocktail Band Ring

Located in เกาะสมุย, TH

The ruby displays a vivid pinkish‑red hue—an unmistakable signature of Thailand’s historic corundum mines—and is professionally heat‑enhanced, as is customary for fine rubies.

Category

20th Century Thai Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Ceylon Sapphire and Ruby Bypass Ring
Ceylon Sapphire and Ruby Bypass Ring

Ceylon Sapphire and Ruby Bypass Ring

Located in New Orleans, LA

This stunning bypass ring features a Ceylon blue sapphire totaling 1.45 carats and a Vietnamese red ruby totaling 1.35 carats. Both these magnificent gems are certified by C.

Category

21st Century and Contemporary Modern Cocktail Rings

Materials

White Diamond, Ruby, Sapphire, Blue Sapphire, Platinum

Estate 18K White Gold Sugarloaf Ruby Diamond Clover Cocktail Ring 6.91cttw Sz 7
Estate 18K White Gold Sugarloaf Ruby Diamond Clover Cocktail Ring 6.91cttw Sz 7

Estate 18K White Gold Sugarloaf Ruby Diamond Clover Cocktail Ring 6.91cttw Sz 7

Located in Winter Springs, FL

A contemporary gemstone cocktail ring crafted in 18K white gold centered by a 4.65ct natural cabochon sugarloaf cut vividly red ruby (heat only) surrounded by another 1.03ctw in natu...

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

7.15 Carats Burmese Ruby & Old European Diamond Drop Earrings
7.15 Carats Burmese Ruby & Old European Diamond Drop Earrings

7.15 Carats Burmese Ruby & Old European Diamond Drop Earrings

By Unbranded

Located in Tysons, VA

Certified by AGL as natural and no-heat, the rubies display rich red color complemented by approximately 3.00 carats of antique-cut diamonds.

Category

21st Century and Contemporary Drop Earrings

Materials

Ruby, Diamond, Platinum

Exceptional Untreated 2.03ct Mozambique Pigeon's Blood Ruby, Swiss Certified
Exceptional Untreated 2.03ct Mozambique Pigeon's Blood Ruby, Swiss Certified

Exceptional Untreated 2.03ct Mozambique Pigeon's Blood Ruby, Swiss Certified

Located in London, GB

This exceptional untreated 2.03 carat ruby displays the highly sought-after "pigeon's blood" colour — the deep, vivid red regarded as the pinnacle of ruby grading.

Category

21st Century and Contemporary British Loose Gemstones

Materials

Ruby

Art Deco Platinum Burmese Ruby and Diamond Drop Earrings
Art Deco Platinum Burmese Ruby and Diamond Drop Earrings

Art Deco Platinum Burmese Ruby and Diamond Drop Earrings

Located in Braintree, GB

The rubies are described as natural Burmese origin with no heat treatment, displaying a strong, vibrant pinkish-red colour.

Category

Vintage 1920s European Art Deco Drop Earrings

Materials

Diamond, Ruby, Platinum

Highly Exceptional Untreated 1.10carats Pigeon's Blood Ruby, Swiss Certified
Highly Exceptional Untreated 1.10carats Pigeon's Blood Ruby, Swiss Certified

Highly Exceptional Untreated 1.10carats Pigeon's Blood Ruby, Swiss Certified

Located in London, GB

Certified by Gem Research Swisslab (GRS), this beautiful ruby displays the highly sought-after Pigeon's Blood colour — a deep and vivid red that is considered the pinnacle of color g...

Category

21st Century and Contemporary British Loose Gemstones

Materials

Ruby

GIA Certified Handmade Burma Ruby and Diamond Yellow Gold Ring
GIA Certified Handmade Burma Ruby and Diamond Yellow Gold Ring

GIA Certified Handmade Burma Ruby and Diamond Yellow Gold Ring

Located in Miami, FL

This GIA certified handmade 18K yellow gold ring is a striking expression of rarity and refined craftsmanship. At its center is a vivid no-heat Burma ruby (GIA certified), celebrated...

Category

2010s American Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

Emilio Jewelry Certified 7.89 Carat Untreated Burma Ruby Ring
Emilio Jewelry Certified 7.89 Carat Untreated Burma Ruby Ring

Emilio Jewelry Certified 7.89 Carat Untreated Burma Ruby Ring

By Emilio!

Located in New York, NY

From Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, GRS certified as vivid red pigeons blood. No Heat and untreated. Burma M...

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Bulgari Exquisite Burma Ruby Diamond Estate Bracelet in Platinum
Bulgari Exquisite Burma Ruby Diamond Estate Bracelet in Platinum

Bulgari Exquisite Burma Ruby Diamond Estate Bracelet in Platinum

By Bulgari

Located in Dallas, TX

Further details: - Featuring approximately 10 carats of fine white (approximately F to H color, VVS to VS clarity) diamonds and 20 carats of vivid red rubies. The rubies are certifie...

Category

Late 20th Century Italian More Bracelets

Materials

Diamond, Ruby, White Diamond, Platinum

Ruby Earrings Cluster Diamond 18k Gold Mozambique Certified
Ruby Earrings Cluster Diamond 18k Gold Mozambique Certified

Ruby Earrings Cluster Diamond 18k Gold Mozambique Certified

Located in Beverly Hills, CA

A truly gorgeous and refined modern creation, these diamond earrings feature two vivid red Mozambique rubies. Each gemstone is certified as natural Mozambique ruby with no indication...

Category

21st Century and Contemporary Unknown More Earrings

Materials

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

Burmese Cushion Ruby & Pear Diamond 18k Gold Ring, AGL & Gübelin Certified
Burmese Cushion Ruby & Pear Diamond 18k Gold Ring, AGL & Gübelin Certified

Burmese Cushion Ruby & Pear Diamond 18k Gold Ring, AGL & Gübelin Certified

Located in New York, NY

The ruby’s vivid, evenly saturated red and fine crystal are framed by pear-shaped diamonds totaling 6.22 ct, adding crisp brilliance and a graceful taper around the centerpiece.

Category

2010s American Art Nouveau Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

ICA Certified 15.28 Carat Burmese Unheated Ruby and Diamond Earring in 18K Gold
ICA Certified 15.28 Carat Burmese Unheated Ruby and Diamond Earring in 18K Gold

ICA Certified 15.28 Carat Burmese Unheated Ruby and Diamond Earring in 18K Gold

By Rewa Jewellery

Located in Bangkok, TH

A brand new pair of ruby and diamond earrings. The forty two rubies weigh 15.28 carat certified by International Colored Gemstone Association (ICA) unheated and 'Pinkish red to Vivi...

Category

2010s Chandelier Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

GIA Certified Oval 17.90 Carat Natural Ruby Diamond Platinum Cocktail Ring
GIA Certified Oval 17.90 Carat Natural Ruby Diamond Platinum Cocktail Ring

GIA Certified Oval 17.90 Carat Natural Ruby Diamond Platinum Cocktail Ring

Located in Stamford, CT

A masterpiece of timeless beauty. blending the rich, vivid allure of a natural ruby with the scintillating sparkle of diamonds, all gracefully set in luxurious platinum. 17.90ct nat...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

Certified 1.43 Carat Mozambique Ruby and Emerald Cocktail Engagement Ring
Certified 1.43 Carat Mozambique Ruby and Emerald Cocktail Engagement Ring

Certified 1.43 Carat Mozambique Ruby and Emerald Cocktail Engagement Ring

By Royaal Stones Ltd

Located in Bangkok, Thailand

The beautiful pink/red hue of the Ruby complements the vivid green of the Emeralds, making it a very unique ring to own!

Category

21st Century and Contemporary Modern Engagement Rings

Materials

Emerald, Ruby, 18k Gold, White Gold

GRS Certified 5 Carat Pigeon Blood Ruby and Diamond Ring
GRS Certified 5 Carat Pigeon Blood Ruby and Diamond Ring

GRS Certified 5 Carat Pigeon Blood Ruby and Diamond Ring

Located in Chicago, IL

Center Stone: 5 carat natural ruby Certification: GRS, no indication of heat treatment Color: Vivid Red — “Pigeon Blood Red” Origin: Mozambique Cut: Rectangular Cushion Side Sto...

Category

2010s American Contemporary Three-Stone Rings

Materials

Diamond, Ruby, Yellow Gold, Platinum

Mid Century Ruby Ring with Diamonds in 18K White Gold, England circa 1950
Mid Century Ruby Ring with Diamonds in 18K White Gold, England circa 1950

Mid Century Ruby Ring with Diamonds in 18K White Gold, England circa 1950

Located in Berlin, BE

The design features a vivid natural ruby of approximately 1.36 carats, showing a beautiful rich red color and unheated (no heat) origin.

Category

20th Century English Aesthetic Movement Solitaire Rings

Materials

Diamond, Ruby, White Gold

GIA Certified 2.3 Carat Oval Ruby & Round Diamond Halo 18K Stud Earrings
GIA Certified 2.3 Carat Oval Ruby & Round Diamond Halo 18K Stud Earrings

GIA Certified 2.3 Carat Oval Ruby & Round Diamond Halo 18K Stud Earrings

Located in Miami, FL

About the Stones: Both rubies carry GIA certification confirming their Burma origin — the most prestigious geographic source for natural rubies in the world, historically producing s...

Category

21st Century and Contemporary Modern Stud Earrings

Materials

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

New Platinum 4.22ctw GIA Oval Ruby & Pear Brilliant Diamond Drop Dangle Earrings
New Platinum 4.22ctw GIA Oval Ruby & Pear Brilliant Diamond Drop Dangle Earrings

New Platinum 4.22ctw GIA Oval Ruby & Pear Brilliant Diamond Drop Dangle Earrings

Located in Montclair, NJ

These super elegant and fancy pair of earrings is crafted in solid platinum and feature a matching pair of GIA certified oval brilliant cut rubies and pear brilliant diamonds. The ru...

Category

2010s American Dangle Earrings

Materials

Diamond, Ruby, Platinum

Toi et Moi Ring 1.02ct Mozambique Ruby & 1.31ct Diamonds Baguettes in 18K Gold
Toi et Moi Ring 1.02ct Mozambique Ruby & 1.31ct Diamonds Baguettes in 18K Gold

Toi et Moi Ring 1.02ct Mozambique Ruby & 1.31ct Diamonds Baguettes in 18K Gold

Located in Great Neck, NY

At the heart of the ring rests a 1.02 carat natural ruby, no heat, displaying a vivid red hue with outstanding luster and clarity.

Category

21st Century and Contemporary Modern Fashion Rings

Materials

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

Platinum Engagement Ring GIA Certified 1.01 Carat Oval Ruby and Side Diamonds
Platinum Engagement Ring GIA Certified 1.01 Carat Oval Ruby and Side Diamonds

Platinum Engagement Ring GIA Certified 1.01 Carat Oval Ruby and Side Diamonds

Located in New York, NY

Features 1.01 Carat Oval Ruby Certification: GIA Report 223127132 Carat Weight: 1.01 carat Shape: Oval Color: Rich, vivid red Clarity: Eye-clean Treatment: No indication of heating S...

Category

Early 2000s American Contemporary Engagement Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 1.18 Carat Pigeon Blood Ruby Diamond Cocktail Ring  Crafted in 18K
GIA Certified 1.18 Carat Pigeon Blood Ruby Diamond Cocktail Ring  Crafted in 18K

GIA Certified 1.18 Carat Pigeon Blood Ruby Diamond Cocktail Ring Crafted in 18K

By Antinori Fine Jewels

Located in Chicago, IL

GIA Certified 1.18 Carat Pigeon Blood Ruby Diamond Cocktail Ring Crafted in 18K yellow gold, this striking cocktail ring centers a vivid oval Pigeon Blood ruby, certified by GIA (Re...

Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

GIA Certified 10.31 Carat Ruby and Diamond Earrings in 18 Karat White Gold
GIA Certified 10.31 Carat Ruby and Diamond Earrings in 18 Karat White Gold

GIA Certified 10.31 Carat Ruby and Diamond Earrings in 18 Karat White Gold

By Rewa Jewellery

Located in Bangkok, TH

The rubies in these pair of earrings have been certified by the Gemological Institute of America (GIA), as Burmese no heat.

Category

2010s Thai Modern Drop Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Antique 18k Gold Gia Emerald Ruby Diamond & Pearl Large Fly Insect Pin Brooch
Antique 18k Gold Gia Emerald Ruby Diamond & Pearl Large Fly Insect Pin Brooch

Antique 18k Gold Gia Emerald Ruby Diamond & Pearl Large Fly Insect Pin Brooch

Located in Montclair, NJ

--Stone(s):-- (1) Natural Genuine Emerald - Pear Cabochon Cut - Bezel Set - Vivid Green Color w/ Natural Inclusions- 4-6ct (approx. based on GIA measurements)** See Certification Det...

Category

21st Century and Contemporary Brooches

Materials

Diamond, Emerald, Pearl, Ruby, 18k Gold

GRS Certified 11.88 Karat Burma Ruby And Diamond Earrings In 18 Karat White Gold
GRS Certified 11.88 Karat Burma Ruby And Diamond Earrings In 18 Karat White Gold

GRS Certified 11.88 Karat Burma Ruby And Diamond Earrings In 18 Karat White Gold

By Rewa Jewellery

Located in Bangkok, TH

All centre piece rubies have been certified by GRS as natural Burma ruby no heat, having colour from vivid to deep red.

Category

2010s Thai Aesthetic Movement Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

Lacloche Frères Important Art Deco Burma Ruby Diamond Earrings and Clip Brooches
Lacloche Frères Important Art Deco Burma Ruby Diamond Earrings and Clip Brooches

Lacloche Frères Important Art Deco Burma Ruby Diamond Earrings and Clip Brooches

By Lacloche Freres

Located in Dallas, TX

For an elegant conclusion, the brooches-earrings suspend a triple-row tassel of circular-cut saturated-red rubies wich are GIA certified as Burma geographic origin and no heat treatm...

Category

Vintage 1930s French Art Deco Dangle Earrings

Materials

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

New Platinum AGL & GIA Cushion Pink Sapphire Burma Ruby & Half Moon Diamond Ring
New Platinum AGL & GIA Cushion Pink Sapphire Burma Ruby & Half Moon Diamond Ring

New Platinum AGL & GIA Cushion Pink Sapphire Burma Ruby & Half Moon Diamond Ring

Located in Montclair, NJ

Two major US labs agree that this is a natural no heat gemstone! One sees it as a Ruby - Burma NO HEAT and one as a Pink Sapphire NO HEAT - The bottom line is this is a magnificent ...

Category

2010s American Engagement Rings

Materials

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

GIA Antique Pigeon Blood Burmese Burma Ruby Rose Cut Diamond Necklace French
GIA Antique Pigeon Blood Burmese Burma Ruby Rose Cut Diamond Necklace French

GIA Antique Pigeon Blood Burmese Burma Ruby Rose Cut Diamond Necklace French

Located in New York, NY

Colors range from pink red ruby to a vivid pigeon blood red that is regarded as the finest color for ruby.

Category

Antique 19th Century French Belle Époque Pendant Necklaces

Materials

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

Antique Arts & Crafts 12k Gold GIA Sapphire Ruby & Emerald Swirl Leaf Brooch Pin
Antique Arts & Crafts 12k Gold GIA Sapphire Ruby & Emerald Swirl Leaf Brooch Pin

Antique Arts & Crafts 12k Gold GIA Sapphire Ruby & Emerald Swirl Leaf Brooch Pin

Located in Montclair, NJ

-- Stone(s) -- (3) Natural Genuine Sapphires - Cushion Old Mine Cut - Prong Set - Rich Royal Blue Color - 1.20ctw (approx.) ** See Certification Details Below for Complete Info ** (3...

Category

Vintage 1910s Arts and Crafts Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, Gold

18K Gold 0.60ct Squared Muti- Stones & 0.02ct Diamond Fine Vintage Band Ring
18K Gold 0.60ct Squared Muti- Stones & 0.02ct Diamond Fine Vintage Band Ring

18K Gold 0.60ct Squared Muti- Stones & 0.02ct Diamond Fine Vintage Band Ring

Located in เกาะสมุย, TH

This ring has beautiful highly saturated colors of 2 squared green emerald, 2 squared blue sapphires and 3 squared vivid red rubies, plus 2 diamonds are channeled nicely into the ban...

Category

20th Century Cluster Rings

Materials

Emerald, Ruby, Sapphire, Diamond, 18k Gold

Art Deco Ruby and Diamond Bar Brooch
Art Deco Ruby and Diamond Bar Brooch

Art Deco Ruby and Diamond Bar Brooch

Located in London, GB

The elegant geometric design is composed of sparkling diamonds interspersed with vivid red rubies Should you choose to make this purchase we would be delighted to send it to you in ...

Category

Vintage 1930s French Art Deco Brooches

Materials

Diamond, Ruby, 18k Gold, Platinum

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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.