CERTIFIED RUBY No Heat Oval Shape Intense Vivid Red 1.358 Carats Cert-B34763
Located in Miami, FL
Its size over a carat, vivid red color, and romantic oval cut make it perfectly suited for a custom high-jewelry creation, where its extraordinary beauty and rarity can be fully show...
Ruby
Platinum 2.41ctw GIA Oval Rich Vivid Red Ruby w/ Diamond Cluster Cocktail Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-710112569 --Certification Details:-- Laboratory: GIA Report Number: 2235880813 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Platinum
14k Gold GIA Elongated Oval Burma Ruby Marquise & Round Diamond Frame Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-170101060 --Certification Details:-- Laboratory: GIA Report Number: 1236910952 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Gold, 14k Gold, Yellow Gold
Vintage 14k Yellow Gold GIA .55ctw No Heat Ruby & Pearl Circle Wreath Pin Brooch
Located in Montclair, NJ
Comes with original GIA certification for 1 randomly picked ruby. Stock Number: MK-19029917 --Certification Details For Ruby:-- Laboratory: GIA Report Type: Ruby Origin Report Repor...
Pearl, Ruby, Gold, 14k Gold, Yellow Gold
GIA Certified No Heat Star Ruby in Vintage Platinum Ring Signed Dreicer & Co.
By Dreicer & Co.
Located in Miami, FL
A gorgeous display of the delicate balance of natural events that creates such a stunning gemstone. Ruby Details: - Species: Natural Corundum - Natural Star Ruby - Geographic Origin...
Diamond, Star Ruby, Ruby, Platinum
New Platinum 1.68ctw GIA Rectangular Cut Ruby & Baguette Diamond Engagement Ring
Located in Montclair, NJ
Comes with the original GIA certification for the ruby. Stock Number: MK-910216056-23121610-EY --Certification Details:-- Laboratory: GIA Report Type: Ruby Origin Report Report Num...
Diamond, Ruby, Platinum
Antique Art Deco Platinum Gia Burma Ruby & Diamond Oval Platter Statement Ring
Located in Montclair, NJ
Comes w/ the original GIA certification for the ruby. Stock Number: MK-190667019-24041914 --Certification Details:-- Laboratory: GIA Report Number: 2235232106 Shape: Oval Mixed Cut ...
Diamond, Ruby, Platinum
Vintage Mid Century Platinum GIA No Heat Burma Star Ruby w/ Diamond Bracelet
Located in Montclair, NJ
Comes with original GIA certification for one randomly picked ruby. Stock Number: MK-460301013 --Certification Details :-- Laboratory: GIA Report Number: 2235937479 Shape: Ova Cutti...
Diamond, Ruby, Gold, White Gold, Platinum
New Platinum 4.22ctw GIA Oval Ruby & Pear Brilliant Diamond Drop Dangle Earrings
Located in Montclair, NJ
Stock Number: EK-8901324569-PAR-EY --Diamond #1 Certification Details:-- Laboratory: GIA Report Number: 2225507010 Shape: Pear Modified Brilliant Measurements: 9.44 x 6.05 x 3.10 mm...
Diamond, Ruby, Platinum
Platinum 3.52ctw GIA Bright Red Burma Ruby Diamond Halo Sapphire Shoulders Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-630176091 --Certification Details:-- Laboratory: GIA Report Number: 2235694673 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Sapphire, Platinum
Gold & Platinum GIA Sapphire Ruby Emerald Pearl & Diamond Tutti Frutti Bracelet
Located in Montclair, NJ
Comes with original (3) GIA certifications for 1 each randomly selected sapphire, ruby & emerald. Stock Number: MK-710346013 --Certification Details for Sapphire:-- Laboratory: ...
Diamond, Emerald, Pearl, Ruby, Sapphire, Gold, White Gold, Yellow Gold, ...
Antique Edwardian 18k Gold GIA NO HEAT Oval Ruby & Diamond Pendant Necklace
Located in Montclair, NJ
Comes with the original GIA certification for the ruby. Stock Number: STE-81040394-21102501 --Certification Details:-- Laboratory: GIA Report Number: 2221056320 Stone Type: Natural ...
White Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Platinum
Platinum High Quality GIA 2.04ct No Heat Oval Vivid Red Ruby & Diamond Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-36090010 --Certification Details:-- Laboratory: GIA Report Number: 2235663359 Stone Shape: Oval Cutting Style: C...
Diamond, Ruby, Platinum
Antique Victorian Gold GIA Buttercup Ruby Solitaire w/ Enamel Detailed Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-46053517 --Certification Details:-- Laboratory: GIA Report Number: 5232663315 Stone Shape: Cushion Cutting Style...
Ruby, Gold, 18k Gold, Yellow Gold, Enamel
Platinum High Quality GIA 1.81ct Vivid Fiery Red Ruby Baguette Diamond Wrap Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-190122590 --Certification Details:-- Laboratory: GIA Report Number: 5231601922 Stone Shape: Near-Round Cutting S...
Diamond, Ruby, Platinum
Platinum High Quality GIA 2.22ct No Heat Oval Ruby Diamond Halo Ballerina Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-510170344 --Certification Details:-- Laboratory: GIA Report Number: 2235514484 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Platinum
Platinum GIA 1.1ctw Marquise Burma Vivid Red Ruby w/ Diamond Swirl Halo Ring
Located in Montclair, NJ
Comes with original GIA certification for the center ruby. Stock Number: MK-73085399 --Certification Details:-- Laboratory: GIA Report Number: 2233623648 Stone Shape: Marquise Cutti...
Diamond, Ruby, Platinum
Vintage Platinum GIA 11.18ctw Burma No Heat Star Ruby w/ Diamond Statement Ring
Located in Montclair, NJ
Stock Number: MK-170130599 --Certification Details:-- Laboratory: GIA Report Number: 2235616327 Stone Type: Natural Corundum - Natural Star Ruby Shape: Round Cutting Style: Double C...
Diamond, Ruby, Platinum
Large Vintage Retro Gold Palladium GIA Burma Ruby Diamond Shell Fur Clip Brooch
Located in Montclair, NJ
Comes with original GIA certification for 1 randomly picked ruby. Stock Number: MK-170194313 --Certification Details For Ruby:-- Laboratory: GIA Report Type: Ruby Origin Report Repo...
Diamond, Ruby, Gold, 14k Gold, Yellow Gold, Palladium
Vintage 18k Gold GIA Burma No Heat Ruby Emerald & Diamond Strawberry Pin Brooch
Located in Montclair, NJ
Stock Number: EK-280267231-23062421-PAR-EY --Certification Details:-- Laboratory: GIA Report Number: 5221945838 Shape: Oval Cutting Style: Cabochon Cut Transparency: Transparent Col...
Diamond, Emerald, Ruby, 18k Gold
Vintage 14k Gold 5.25ctw GIA Burma No Heat Ruby Emerald Eye Jumping Fish Brooch
Located in Montclair, NJ
Comes with original GIA certification for 1 randomly picked ruby. Stock Number: MK-170220363 --Certification Details For Ruby:-- Laboratory: GIA Report Type: Ruby Origin Report Repo...
Emerald, Ruby, Gold, 14k Gold, Yellow Gold
Vintage 18K Gold Old Diamond Ruby Green Enamel Snake Serpent Bangle Bracelet
Located in Houston, TX
Prong Set in 18 Karat Yellow Gold with: One (1) natural, round-shaped, brilliant cut ruby: Species: Natural Corundum Variety: Natural Ruby Measurements: 6.00mm - 6.10mm in diameter...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
Antique Victorian 18K Yellow Gold Sapphire Ruby Diamond Royal Crown Pin
Located in Houston, TX
Color: G - H Clarity: VS1 - VS2 Polish: Good Symmetry: Good Prong Set in 18 Karat Yellow Gold with: One (1) natural, square-shaped, brilliant cut ruby: Species: Natural Corundum V...
Diamond, Ruby, Sapphire, Gold, 18k Gold, Yellow Gold
Vintage Palladium Gold GIA 7.60ct Burma Ruby Diamond Enamel Floral Pin Brooch
Located in Montclair, NJ
Comes with original GIA certifications for the ruby. Excellent condition! Stock Number: MK-420433521-23120618-PAR-EY --Certification Details:-- Laboratory: GIA Report Type: Ruby Or...
Diamond, Ruby, Gold, Palladium, Enamel
Platinum & Gold 16.47ctw GIA Vivid Burma Ruby Diamond Chandelier Dangle Earrings
Located in Montclair, NJ
The earrings come with the original GIA certification for the 2 rubies. Stock Number: MK- 170403850 --Certification Details:-- Laboratory: GIA Report Number: 1232427825 Shape: Pear ...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Platinum
Victorian Gold & Silver GIA Old Mine Burma Ruby & Diamond Target Platter Ring
Located in Montclair, NJ
Stock Number: MK-730188130 --Certification Details:-- Laboratory: GIA Report Number: 2235955760 Stone Shape: Cushion Cutting Style: Crown: Modified Brilliant Cut Cutting Style: Pav...
Diamond, Ruby, Gold, Yellow Gold, Silver
Vintage Platinum GIA 1.47ctw Oval No Heat Burma Ruby & Square Step Diamond Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-460201016 --Certification Details:-- Laboratory: GIA Report Number: 2516274171 Stone Type: Natural Corundum -Nat...
Diamond, Ruby, Platinum
18k Gold Platinum GIA 6.44ctw Cabochon Burma Red Ruby & Diamond Spray Ring
Located in Montclair, NJ
Comes with original GIA certification for the 2 randomly picked rubies. Stock Number: MK-920601130 --Certification Details:-- Laboratory: GIA Report Number: 2235422998 Stone Shape: ...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Platinum
Vintage Men's Platinum 1.65ctw GIA Burma Round Ruby Diamond 3 Stone Band Ring
Located in Montclair, NJ
Comes with original GIA certification for the 2 rubies. Stock Number: MK-390115533 --Certification Details:-- Laboratory: GIA Report Number: 2235731964 Stone Shape: Round Cutting St...
Diamond, Ruby, Platinum
Vintage French GIA Pearl 5 Strand Bracelet 18k Yellow Gold Burma Ruby Clasp
Located in Montclair, NJ
Comes w/ Original GIA certification for 1 randomly picked pearl & 1 ruby. Stock Number: MK-140142890 --Pearl GIA Certification:-- Laboratory: GIA GIA Report Number: 5232937423 Shape...
Pearl, Ruby, Gold, 18k Gold, Yellow Gold
Platinum 1.36ctw Oval GIA Burma No Heat Ruby Diamond Milgrain Modern Design Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-410177596 --Certification Details:-- Laboratory: GIA Report Number: 2537228191 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Platinum
Solid Platinum Large GIA 6.37ctw Oval Ruby w/ Rose Cut Diamond Halo Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-910854133 --Certification Details:-- Laboratory: GIA Report Number: 6237646021 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Platinum
MAGNIFICENT 18k Yellow Gold GIA 12.5mm Pearl 42.5ctw Ruby & Diamond Necklace
Located in Montclair, NJ
Comes w/ Original GIA certification for the pearls & the rubies. Stock Number: MK-4901722519 --Pearl Certification Details:-- Laboratory: GIA Report Number: 6237373437 Shape: Butto...
Diamond, Pearl, Ruby, Gold, 18k Gold, Yellow Gold
Vintage Italian 18k Gold Gia Graduated Rondelle No Heat Ruby 32" Long Necklace
Located in Montclair, NJ
Comes with the original GIA certification for 2 randomly selected rubies. Excellent overall condition! Stock Number: MK-130175511-PAR --Certification Details:-- Laboratory: GIA Repo...
Ruby, 18k Gold
18k Gold High Quality 17.48ctw GIA Tourmaline Ruby Garnet Diamond Cocktail Ring
Located in Montclair, NJ
Comes with original GIA certification for the tourmaline, 1 randomly picked Ruby & 1 randomly picked Garnet. Stock Number: MK-170286713 --Tourmaline Certification Details:-- Laborat...
White Diamond, Garnet, Ruby, Tourmaline, Gold, 18k Gold, White Gold, Rho...
Platinum GIA 1.86ctw Clean Cushion No Heat Ruby w/ Baguette & Round Diamond Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-46089090 --Certification Details:-- Laboratory: GIA Report Number: 2235667865 Stone Shape: Cushion Cutting Style...
Diamond, Ruby, Platinum
RCM 18K White Gold GIA Baguette Ruby & Bezel Diamond Cluster 8.35ctw Earrings
By RCM
Located in Montclair, NJ
The earrings come with the original GIA certification for the rubies. Stock Number: MK-460219463-24012522-EY --Certification Details-- Laboratory: GIA Report Type: Ruby Origin Repor...
Diamond, Ruby, 18k Gold, White Gold
English 18k White Gold 5.12ctw Gia Square Burma Ruby Tennis Line Bracelet
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-160342896-24042610 --Certification Details :-- Laboratory: GIA Report Number: 6237243377 Shape: Square Cutting S...
Ruby, White Gold
GIA Certified Georgian Ruby Cabochon and Diamond Earrings 18th/19th Century
Located in OVIEDO, AS
GIA Certified Georgian Ruby Cabochon (Untreated, Unheated) & Diamond Earrings 18th/19th Century Set with two purplish red cabochon pear shape Rubies (Natural Corundum), No indica...
Diamond, Ruby, 18k Gold, Silver
White Gold GIA 0.92ctw Round Ruby Diamond Flower Cluster Pendant Necklace
Located in Montclair, NJ
Comes w/ the original GIA certification for the ruby. Stock Number: MK-19087513 --Certification Details:-- Laboratory: GIA Report Number: 7235387787 Shape: Round Cutting Style: Crow...
Diamond, Ruby, Gold, 14k Gold, 18k Gold, White Gold
New Platinum GIA 1.66ct No Heat Cushion Ruby Solitaire Brushed Matte Finish Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-190176019 --Certification Details:-- Laboratory: GIA Report Number: 1232672152 Stone Shape: Cushion Cutting Styl...
Ruby, Platinum
Vintage GIA 14K Yellow Gold 1.12 ct Unheated Burmese Ruby Diamond 3 Stone Sz 5.5
Located in Addison, TX
Details: GIA Ruby Origin Report Included GIA Report Number: 5232958767 Report Date: May 26 2026 Metal: 14K Yellow Gold Main Stone: Natural Ruby Species: Natural Corundum Geographic O...
Diamond, Ruby, 14k Gold, Yellow Gold
Antique Art Deco Platinum GIA Burma No Heat Square Ruby Stack Eternity Band Ring
Located in Montclair, NJ
Come w/ GIA certification for 1 randomly picked ruby. Stock Number: MK-45059130 --Certification Details :-- Laboratory: GIA Report Number: 2235886210 Shape: Square Cutting Style: St...
Ruby, Platinum
1.72 Carat GIA Certified Burmese Ruby Diamond Ring, Vivid Red, 18K White Gold
Located in Plantation, FL
Accompanied by a gemological report stating: Species: Natural Corundum Variety: Ruby Origin: Burma (Myanmar) Treatment: Heated Metal: 18K White Gold Weight: 4.1 grams Center S...
Diamond, Ruby, 18k Gold, White Gold
Vintage 18K Yellow Gold Brown Enamel Ruby Eyes Diamond Leg Giraffe PIN Brooch
Located in Houston, TX
Color: G - H Clarity: VS2 Cut: Very Good Polish: Very Good Symmetry: Very Good Bezel Set in 18 Karat Yellow Gold with: Two (2) natural, round-shaped, brilliant cut rubies: Species...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Enamel
GIA Certified 11.07 Carat No Heat Burmese Ruby and Diamond Bracelet in Platinum
Located in Southport, CT
This bracelet is 7 1/2" long and 1/2" wide. Gem Detail Rubies Weighing Approximately 5.97 Carats - Individual Ruby Details - 5.7 x 5.2 x 4.0 mm 1.18 Carats, 6.3 x 5.3 x 3.7 mm 1.24 ...
Diamond, Ruby, Platinum
Antique Art Deco Platinum 5.05ctw GIA Pear Ruby & Old Cut Diamond Fan Earrings
Located in Montclair, NJ
Comes with original GIA certification for 2 picked rubies. Stock Number: MK-160366515 --Certification Details:-- Laboratory: GIA Report Number: 6233839466 Shape: Pear Cutting Style...
Diamond, Ruby, Gold, Yellow Gold, Platinum
Platinum GIA 2.98ct Burma No Heat Star Ruby w/ Diamond Swirl Mini Ballerina Ring
Located in Montclair, NJ
Comes w/ the original GIA certification for the Ruby. Stock Number: MK-41086599 --Certification Details:-- Laboratory: GIA Report Number: 5232686836 Shape: Oval Cutting Style: Doub...
Diamond, Ruby, Platinum
Antique Victorian Gold 3.5ctw GIA Old Mine Cut Diamond Cushion Ruby Navette Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-610383815 --Certification Details:-- Laboratory: GIA Report Number: 2235900479 Stone Shape: Cushion Cutting Styl...
Diamond, Ruby, Gold, Yellow Gold
18k Yellow Gold GIA 1.85ctw High Quality Oval Ruby & Diamond Cluster Sides Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-610120394 --Certification Details:-- Laboratory: GIA Report Number: 5232845138 Stone Shape: Oval Cutting Style: ...
Diamond, Ruby, Gold, 18k Gold, Yellow Gold
$113,737Sale Price|20% Off
18 Kt Gold No Heat 6.15 Ct Burmese Ruby Cabochon & Intense Fancy Diamonds Ring
Located in Antwerp, BE
Magnificant 18 Kt. Gold No Heat Burmese Ruby Cabochon & Intense Fancy Diamonds Ring Ruby: Red, Cabochon cut, natural corundum, No heat Burmese Ruby 6.15 ct , Looks like Pigeon Blood !
Diamond, Ruby, Gold
Vintage 14k Gold GIA .93ct Burma No Heat Pear Ruby Tear Drop Pendant Necklace
Located in Montclair, NJ
Comes w/ the original GIA certification for the ruby. Stock Number: MK-190160856 --Certification Details:-- Laboratory: GIA Report Number: 2235788228 Shape: Pear Cutting Style: Crow...
Ruby, Gold, 14k Gold, Yellow Gold
White Gold GIA 1.16ct Oval No Heat Ruby w/ Diamond Petite Halo Illusion Ring
Located in Montclair, NJ
Comes with original GIA certification for the ruby. Stock Number: MK-50062731 --Certification Details:-- Laboratory: GIA Report Number: 5231828340 Stone Shape: Oval Cutting Style: C...
Diamond, Ruby, Gold, White Gold
Vintage 14k White Gold GIA 26.4ctw Ruby Emerald Diamond Handmade Bombe Ring
Located in Montclair, NJ
Comes w/ original GIA certification for the ruby. Stock Number: MK-970385646 --Certification Details:-- Laboratory: GIA Report Number: 2235400709 Shape: Oval Cutting Style: Double C...
Diamond, Emerald, Ruby, Gold, White Gold
18k Gold 2.85ctw GIA and AGL Burma Marquise Ruby & Diamond Halo Cocktail Ring
Located in Montclair, NJ
Comes w/ the original GIA & AGL certifications for the ruby. Excellent overall condition. Stock Number: EK-190679418 -- GIA Report Details -- Report Number: 2225798649 Shape: Marqu...
Diamond, Ruby, 18k Gold
Antique Jeweled Solid 18K Gold 21.6ct Diamond Sapphire Ruby Emerald Filigree Box
Located in Houston, TX
Cut Style: Crown Brilliant Cut Cut Style: Pavilion Brilliant Cut Color(s): Strongly Blue Clarity: Eye Clean (Type II) Prong Set in 18 Karat Yellow Gold with: Six (6) natural, oval-...
Diamond, Emerald, Ruby, Sapphire, Gold, 18k Gold, Yellow Gold
18k Gold Gia 7.78ctw Pear Ruby & Diamond Moi Et Toi Bypass Interlocking Ring
Located in Montclair, NJ
Comes w/ the original GIA certification for the ruby. Stock Number: MK-7801016531-24051810-PAR --Certification Details:-- Laboratory: GIA Report Number: 5234271279 Shape: Pear Cutti...
Diamond, Ruby, 18k Gold
Aenea 64.6ct. Enhanced Ruby Black Diamonds White Gold Sterling Silver Earrings
By AENEA Jewellery
Located in Salzburg, Salzburg
Center Stones: Rubies (Natural enhanced Corundum) 64.75ct. Paving: Black Diamonds 3.21ct.
Black Diamond, Ruby, 18k Gold, White Gold, Rhodium, Sterling Silver
Vintage 18K White Gold Gia 3.93ctw Burma Ruby Halo Diamond Floral Cocktail Ring
Located in Houston, TX
Signs of wear are consistent with age. 8-Prong Set in 18 Karat White Gold in the center with: One (1) natural, square cushion-shaped, brilliant cut ruby: Species: Natural Corundum...
Diamond, Ruby, Gold, 18k Gold, White Gold
GRS Certified 1.03 Carat No Heat Ruby Diamond Art Deco Platinum Ring Vintage Era
Located in Miami, FL
Rubies showing no indications of heating are especially desirable in fine jewelry, as heat treatment is commonly used to improve the color and clarity of natural corundum.
White Diamond, Ruby, Gold, Yellow Gold, 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.