GIA Certified .3 Carat Natural Red Ruby Diamond Gold Victorian Engagement Ring
Located in Stamford, CT
Rare and beautiful late 1800’s 18k yellow gold engagement ring with top gem natural rubies- GIA certified natural and no heat.
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
1.02 Carat Oval Cut Natural Burma Ruby with 1.32ctw in Pave Set Diamonds
Located in Houston, TX
This gorgeous ring features a 1.02 carat oval cut natural Burma ruby, no heat, set in 18 karat white gold surrounded by 1.32 carat total weight in pave set diamonds that go about hal...
Diamond, Ruby, 18k Gold, White Gold
$2,320Sale Price|20% Off
Set in 18k Rose Gold, 4 Carats, Natural Mozambique Ruby & Diamonds Stud Earrings
By JEWEL HUB
Located in Hong Kong, HK
Features: ✦ Handmade / Handcrafted Fine Jewelry ✦ Gemstone: natural, no heat, Mozambique Ruby ✦ Gemstone Cut: Pear ✦ Gemstone Weight: 4.02 ct.
Diamond, Ruby, 18k Gold, Rose Gold
$22,400Sale Price|20% Off
18k Large Cabachon Natural Ruby, 4.54 CTS, and Pave Diamond Dome Ring, GIA Cert
Located in Fairfield, CT
18k Natural No Heat Ruby Cabachon And Large Pave Diamond Dome Ring.
Diamond, Ruby, White Diamond, 18k Gold
Platinum Ruby & Diamond Ring - 900 Emerald Cut 4.39ctw AGL
Located in Greensboro, NC
Metal Content: 900 Platinum Stone Information Natural Ruby Treatment: No Heat, Untreated Carat(s): 3.91ct Cut: Emerald Color: Pinkish Red Origin: Burma Certified by: AGL Report Numb...
Diamond, Ruby, Platinum
12.66ct Ruby & Diamond Ring – Dual Certified AGL & GIA, Fine Jewelry
By Unbranded
Located in Tysons, VA
Centering a 12.66 carat natural no-heat ruby of East African origin, this elegant cocktail ring features an oval double cabochon displaying rich red saturation and a luminous glow.
Diamond, Ruby, 18k Gold, White Gold
Platinum Burmese Cabochon Ruby and Diamond Ring, 19.15ct
Located in Braintree, GB
Dimensions Ring size: UK N · US 6¾ · EU 54 Weight: 14.71 grams Specifications - Metal: Platinum (stamped 950) Ruby: Oval cabochon natural ruby, 19.15 ct, Burma (Myanmar), no heat R...
Platinum
Red Ruby Arrow Gold Heart Earrings
Located in Stamford, CT
With gem natural no heat Rubies. Original 3-D 1940 2 triangle and four square gem bright red step cut Rubies.
Ruby, 14k Gold, White Gold, Yellow Gold
7.15 Carats Burmese Ruby & Old European Diamond Drop Earrings
By Unbranded
Located in Tysons, VA
Crafted in platinum, the articulated design offers graceful movement and balanced presence. Certified by AGL as natural and no-heat, the rubies display rich red color complemented by...
Ruby, Diamond, Platinum
Early Victorian Burmese Ruby and Diamond Floral Spray Brooch
Located in London, GB
Accompanying certification confirms the rubies to be natural Burmese rubies with no indications of heat treatment, a highly desirable and increasingly scarce combination in antique j...
Diamond, Ruby, Gold, Silver
Cabochon 6.31 Carat Untreated Burma Ruby Ring
Located in New Orleans, LA
The exceptional jewel weighs 6.31 carats and its sugarloaf cut perfectly showcases the intense red hue for which Burma rubies are so coveted. Certified by C. Dunaigre Switzerland as ...
Diamond, Ruby, 18k Gold, Yellow Gold, Platinum
17.71 Carat Certified Untreated Ruby Diamond Platinum Ring
By Emeralds Maravellous
Located in Brunswick, ME
Showcasing one oval shape red ruby cabochon gemstone weighing 17.61 carats 100% natural no heat - untreated Ruby cabochon purplish red color 19.05 x 11.85 x 7.33 mm.
Diamond, Ruby, Platinum
3.50 Carat Ruby Yellow Gold Brick Flexible Bracelet
Located in Stamford, CT
1950's mid-century vintage 1.5 inch wide brick mesh buckle bracelet set with 23 round red natural certified no heat Rubies. Buckle opens and closes to securely adjust the length. 8.5...
Ruby, 14k Gold, Yellow Gold, Gold
Gold Toi et Moi Ring - 1ct Unheated Ruby & 0.70ct Old Mine Cut Diamond
Located in Berlin, BE
Classic Toi et Moi ring in solid 18k white gold featuring an unheated ruby and an old cut diamond side-by-side. Gemstone: Natural Ruby (Unheated / No Heat) Ruby Weight: Approx. 1.0...
Diamond, Ruby, Gold
Art Deco Carved Burmese Ruby and Diamond Platinum Convertible Pendant, Circa 192
Located in Beverly Hills, CA
Four carved leaf-motif cabochon rubies, natural, Burmese origin, no heat, approximately 4 total carats (GIA Report 6214920945). 160 round brilliant and single-cut diamonds, approxima...
Diamond, Ruby, Platinum
Retro Oscar Heyman 18K Yellow & White Gold Ruby Diamonds Bracelet
By Oscar Heyman
Located in Flushing, NY
Accompanied by an Identification Report from: Society of Gemmological Research Identification Report - Quality Control Card No. 29235 The Identification Report Card states that th...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
GIA Certified 5.10 Carat Star Cabochon Ruby Yellow Gold Men's Ring
Located in Stamford, CT
The GIA has certified the ruby as natural, no heat. Classic mid-century 1960's men's ring. 1 oval cabochon purplish red display asterism star ruby, approx. 5.1cts GIA Certificate #...
Ruby, Star Ruby, Gold, 14k Gold, Yellow Gold
GIA Certified 1.17 Carat Ruby Diamond Halo Gold Engagement Ring
Located in Stamford, CT
Natural no heat Ruby engagement ring. GIA certified center oval ruby with a halo of 8 old mine cut diamonds in a 18k yellow gold setting.
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
Oval shape Unheated Mozambique Ruby 2.98 ct Contemporary Cocktail Ring 18K Gold
By HYT
Located in Hong Kong, HK
A refined Natural Mozambique Ruby (No Heat) and White Diamond Band Ring in 18K Gold, centered with a vivid oval-shaped untreated ruby prized for its rich natural red hue and exceptio...
Ruby, White Diamond, White Gold, 18k Gold
Oval shape Unheated Mozambique Ruby 2.37 ct Contemporary Cocktail Ring 18K Gold
By HYT
Located in Hong Kong, HK
Set in polished gold, the design is minimal, elegant, and focused entirely on the beauty of natural gemstones in harmony. Mozambique Ruby (No Heat) - 2.37 ct Natural White diamonds-...
White Diamond, Ruby, 18k Gold, White Gold
Pear shape Unheated Mozambique Ruby 2.38 ct Contemporary Cocktail Ring 18K Gold
By HYT
Located in Hong Kong, HK
A refined Natural Mozambique Ruby (No Heat) and White Diamond Band Ring in 18K Gold, featuring vivid pear-shaped untreated rubies, celebrated for their rich natural red color and exc...
White Diamond, Ruby, 18k Gold, White Gold
$216,000Sale Price|20% Off
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...
Diamond, Ruby, Yellow Gold, Platinum
Tiffany & Co., AGL 2.00 Ct Burma Ruby and Diamond Ring, Platinum and 18K
By Tiffany & Co.
Located in Chicago, IL
PT950 750 Gross weight: 5.50 grams AGL COPY, 2026, Report No. 8093534, 2.00 carats, Natural Ruby, Burma (Myanmar), No Heat GIA COPY, 2021, Report No. 2211868762, 2.00 carats, Natur...
Diamond, Ruby, 18k Gold, Yellow Gold, Platinum
Antique Edwardian Platinum Old Mine Diamond Burma Ruby Three Stone Ring - GIA
Located in Great Neck, NY
This beautiful ring features a natural Burma no heat ruby with two old mine cut diamonds that weigh 1 ct each and all have GIA reports.
Diamond, Ruby, Platinum
GIA Certified 1.07 Carat Untreated Ruby & Diamond Cocktail Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring set in Platinum featuring a GIA Certified 1.07 Carat Natural, Untreated (No Heat) Ruby and 0.29 Carat Diamonds.
Diamond, Ruby, Platinum
GIA Certified 3.58 Carat Untreated Ruby & Diamond Cocktail Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring set in Platinum featuring a GIA Certified 3.58 Carat Natural, Untreated (No Heat), Mozambican Ruby and 1.07 Carat Diamonds.
Diamond, Ruby, Platinum
GIA Certified 1.04 Carat Oval Ruby Diamond Art Deco Platinum Engagement Ring
Located in Stamford, CT
The GIA has certified this ruby as natural, no heat. 1 top gem oval pure gem blood red Ruby, approx. total weight 1.04cts, SI1, 5.82 x 4.63 x 4.35mm, natural color, no heat and no ...
Diamond, White Diamond, Ruby, Platinum
Peter Suchy GAL Certified .93 Carat Ruby Diamond Gold Engagement Ring
By Peter Suchy
Located in Stamford, CT
Simple and elegant ruby and diamond engagement ring. GAL certified oval natural no heat ruby center stone mounted in a three-stone 18k white gold setting.
Diamond, Ruby, Gold, 18k Gold, White Gold
GIA 1.45 Carat Pear Shaped Ruby Sapphire Diamond Gold Crown Engagement Ring
Located in Stamford, CT
Victorian sapphire, ruby and diamond crown ring. circa 1870. GIA certified pear shaped Burman natural no heat ruby and cornflower sapphire set an 18k yellow gold crown setting with a...
Sapphire, Ruby, Diamond, Blue Sapphire, 18k Gold, Gold, Yellow 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.
Diamond, Ruby, 18k Gold, White Gold
Peter Suchy GIA Certified .55 Carat Round Ruby Diamond Gold Three-Stone Ring
By Peter Suchy
Located in Stamford, CT
The GIA graded this ruby as natural, no heat and the origin as being Thailand.
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
Certified GIA Star Sapphire Ruby Emerald Diamond Platinum Bracelet
Located in Miami, FL
GIA* Certified, it features 5 cabochon genuine natural blue star sapphires no heat approx. 31.45cts, 5 genuine natural cabochon star rubies no heat approx. 35.63cts, and 5 genuine na...
Star Sapphire, Platinum
1.42 Carat Pear Shape Ruby and Diamond Platinum Ring
By David Gross Group
Located in New York, NY
This Ruby ring is a work of art. Its center stone is a pear shape natural "no heat" Mozambique ruby weighing 1.42 carats.
Diamond, Ruby, Platinum
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.