Vintage GIA 9.50 carat no heat star ruby 18k yellow gold bezel stud earrings
Located in Beverly Hills, CA
Each earring features a GIA-certified oval cabochon star ruby, together totaling an impressive 9.50 carats.
Ruby, Gold, 18k Gold, Yellow Gold
GIA Certified 2.85 Carat Natural Star Ruby and Diamond Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring made in Platinum featuring a GIA Certified 2.85 Carat Natural Unheated, Burmese Star Ruby and 1.27 Carat Diamonds. Rubies are referred to as "Ratnaraj" in Sanskrit m...
Diamond, Star Ruby, Platinum
Antique French 18k Gold Opal with GIA Ruby & Sapphire VERY Long Bar Pin Brooch
Located in Montclair, NJ
Excellent condition! Comes w/ GIA certification for the ruby & sapphire! Stock Number: MK-100101056-24020520-EY --Sapphire Certification Details:-- Laboratory: GIA Report Number: 52...
Opal, Ruby, Sapphire, 18k Gold
GIA Certified 3.51 Carat Burmese Star Ruby and Diamond Ring Made in Platinum
Located in Tokyo, JP
A beautiful Ring made in Platinum featuring a GIA certified 3.512 Carat Natural Burmese Star Ruby and 0.66 Carat Diamonds. Rubies are referred to as "Ratnaraj" in Sanskrit meaning th...
Diamond, Star Ruby, Platinum
Rare GIA Certified 7.91 No Heat Afghanistan Ruby 18K Pave Diamond Ring
Located in Los Angeles, CA
GIA Report Number 2231362473 Art Deco 18K Yellow Gold Cabochon Cushion Extremely Rare Afghani No Heat Ruby Diamond Engagement Ring.
Diamond, Ruby, 18k Gold, Yellow Gold
New 18k Yellow Gold 3.53ctw GIA Rare Cat's Eye Ruby w/ Diamond Sides Ring
Located in Montclair, NJ
Ring Width: 10.7mm (0.42") (top of the ring - north to south), 19.5mm (0.77")(east to west, diamond to diamond) - 2.1mm (bottom of the shank) Ring Height: 5.9mm rise off the finger C...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
GIA Certified Star Ruby, Pink Sapphire, Purple Sapphire Ring in 18K Rose Gold
Located in Bangkok, TH
Star Ruby 11.24 carats, Pink Sapphire 1.74 carats, Purple Sapphire 2.29 carats and Diamond 0.92 carat Ring set in 18 Karat Rose Gold Settings (GIA Certified) Width: 2.0 cm Length:...
Ruby, Pink Sapphire, Purple Sapphire, Star Ruby, 18k Gold, Rose Gold
GIA-Certified 15ct No Heat Ruby Diamond Ring in 18k White Gold
Located in Beverly Hills, CA
This captivating piece features a 15.00-carat double cabochon ruby from Afghanistan, certified by the Gemological Institute of America (GIA), GIA #6234290460.
Diamond, White Diamond, Ruby, Gold, 18k Gold, White Gold
GIA Cert. 7.40 Carat Purplish Red Star Ruby & Diamond Art Deco Ballerina Ring
Located in Miami, FL
This vintage Art Deco Ballerina design ring sets a GIA certified 7.40 carat purplish red star ruby and is framed with 1.75 carat of baguette and round cut diamonds.
Diamond, Star Ruby, Gold, 18k Gold, White Gold
GIA Certified Red Ruby, Yellow Gold, Blue Sapphires & Diamond Clip On Earrings.
Located in Hong Kong, HK
Please check out the HD video! These vintage earrings are very lively! GIA certified pair of bright red Ruby, blue sapphire and diamond stud earrings. Set in 18k yellow gold, the ce...
Diamond, White Diamond, Ruby, Blue Sapphire, Gold, 18k Gold, Yellow Gold
GIA Certified 14.32 Carat Oval Red Ruby Diamond Platinum Dangle Earrings
Located in Stamford, CT
The upper dangle is adorned with single, baguette and full cut diamonds. Certified by the GIA as natural no heat. These earrings are epitome of 1940's Art Deco eara. 2 natural no h...
Diamond, Ruby, Platinum
GIA Certified Russian Emerald & Burma Sapphire White & Yellow Diamond Joker Pin
Located in New York, NY
GIA Certified Russian Emerald & Burma Sapphire White & Yellow Diamond Joker Pin GIA report # for Emerald is 5222519629 Natural beryl , Emerald Origin Russia GIA report # for Sapph...
Diamond, Ruby, Yellow Diamond, Emerald, Sapphire, 18k Gold
GIA Certified 14 Carat Natural Diamond and Blue Sapphire Cab Necklace Circa 1950
Located in Los Angeles, CA
Retro Gold 14 Carat Natural Diamond, Sapphire, Ruby Cabochon Necklace Circa 1950 A magnificent 18k yellow gold necklace. Set in 17" inch pearl strands is the pendant. Set with appro...
Diamond, Ruby, Sapphire, Blue Sapphire, Gold
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.