ALGT Certified 1.72 Carat Natural Tanzania Deep Red Ruby
Located in AMSTERDAM, NL
heating present and moderate residue in healed fissures Origin: Tanzania A "ruby Tanzania stone" refers to
Ruby
AIG Certified 3.00 Tanzania Ruby Diamonds 18K Gold Ring
Located in New Delhi, Delhi
lustrous Natural Tanzania Ruby of 3,00 carat, in perfect pear cut , spectacular vivid red, common heated
Diamond, Ruby, 18k Gold
GIA Certified 3 Carat Pear Shaped Tanzanian Ruby Freeform Ring
Located in Houston, TX
This unique ring showcases a vibrant 3.00 carat pear-shaped untreated Tanzanian ruby in a polished
Ruby, 18k Gold, Yellow Gold
AIG Certified 3.30 Ct Tanzania Ruby 1.80 Ct Diamonds 18K Gold Ring
Located in New Delhi, Delhi
with a Natural Tanzania Ruby of 3,30 carat, amazing vivd color, common heated, and 36 pieces of natural
Diamond, Ruby, 18k Gold
Bangle Carved Ruby in Zoisite Inner Diameter
Located in Northampton, MA
rubies mashed-up with the green so it can't be jade. And it's not: it is "ruby in zoisite" fropm Tanzania
Ruby
1.51ct Cushion Red Ruby Unheated
Located in Toronto, Ontario
Description: Gem Type: Ruby Number of Stones: 1 Weight: 1.51 cts Measurements: 7.90x5.20x3.40 mm
Ruby
Spinel and Ruby natural gemstone ring, 14K White Gold, GFCO, Certified, size 7US
By GRALJEWELRY
Located in Dublin, D
: Tanzania Secondary Stone: Ruby GRAL Jewelry Only Authentic Gemstone Hand-Made I guarantee fast sending
Ruby, Spinel, 14k Gold
Unheated Red Ruby Stone 3.10 cts in 18K Two Tone Ring with Diamonds / GIA Report
Located in Los Angeles, CA
Discover the timeless elegance of the Natural Unheated Tanzanian Ruby, masterfully set in an 18K
Ruby, Diamond, Yellow Gold, White Gold, 18k Gold
Vintage Sterling Amethyst & Ruby Zoisite Necklace Pendant
Located in Montreal, QC
Vintage sterling silver amethyst 10mm beads and silver pendant with ruby-zoisite. Genuine stone
Amethyst, Ruby, Sterling Silver
GIA certified Unheated Ruby Necklace in 22k solid gold chain
Located in Singapore, SG
piece features one Tanzania Ruby at the center with two natural Burmese unheated rubies that float
Ruby, Yellow Gold, 22k Gold
$9,998
H 0.76 in W 0.54 in
B Kieselstein Cord Platinum GIA Ruby & Diamond Cuff Clip on Statement Earrings
By KIESELSTEIN-CORD
Located in Montclair, NJ
Corundum Variety: Two (2) Natural Rubies Geographic Origin: Tanzania Treatment: No Indications of Heating
Diamond, Ruby, Platinum
MOISEIKIN 18 Karat White Gold 3.54ct No Heat Ruby Cocktail Ring
By MOISEIKIN
Located in Hong Kong, HK
No Heat Ruby from Tanzania is adorned with a perfect gradation of diamonds, rubies and pink sapphires
Pink Sapphire, Sapphire, Ruby, Diamond, White Gold, 18k Gold
GIA 4.97 ct UnHeated Cabochon Ruby Necklace Halo Diamonds in 18k Yellow Gold
Located in La Jolla, CA
photo gallery). The ruby originates from Tanzania and has not been heat treated. Total diamond weight is
Diamond, Ruby, 18k Gold, Yellow Gold
$11,721
H 1.97 in W 0.24 in D 0.2 in L 0.24 in
Long Moonstone Ruby Gold Earrings Natural Gemstones White Lotus gift wedding art
Located in Berlin, DE
14K gold earrings with natural Moonstones and Rubies moonstones origin - Tanzania and Sri-Lanka
Moonstone, Ruby, Gold, 14k Gold, White Gold
Unavailable
18K Rose Gold Ruby Diamond Pendant Earrings
Located in New York, NY
/8in. Accompanied by four GRS certificates stating that all rubies are of Tanzanian origin with no
Diamond, Ruby, Rose Gold
A.Jeschel Spectacular Ruby Zoisite Collar necklace.
By A.Jeschel One-of-a-kind
Located in Miami, FL
sophistication. Originating from Tanzania, Ruby Zoisite is an exceptionally rare gemstone, with its largest
Ruby, Sterling Silver
Rare: 2.38 ct Neon Hot Pink Mahenge Spinel, Designer Cut
Located in Sheridan, WY
: Tanzania CARAT SIZE: 2.383 DIMENSIONS: Length 8.17 x Width 7.67 x Height 4.24 mm SHAPE/CUT: premium
Ruby, Spinel, Padparadscha Sapphire
RARE: 1.58 ct Neon orangish-Red Mahenge Spinel, design cut
Located in Sheridan, WY
: Tanzania CARAT SIZE: 1.581 DIMENSIONS: Length 7.54 x Width 6.41 x Height 4.03 mm SHAPE/CUT: premium
Padparadscha Sapphire , Ruby, Spinel
Mahenge Spinel, Solitaire Ring, Spinel Engagement Ring, August Birthstone Ring
Located in Sheridan, WY
available, please specify during checkout. ORIGIN: Tanzania CARAT SIZE: 1.2 DIMENSIONS: Length 6.60 x Width
Pink Diamond, Ruby, Pink Sapphire, Spinel, Padparadscha Sapphire
Fabergé Colours of Love Rose Gold Spessartite Fluted Ring with Diamond Shoulders
By Fabergé
Located in London, GB
: Tanzania) 22 round white diamonds total weight 0.20ct, 1 round ruby total weight 0.02ct Origin Tanzania
White Diamond, Rose Gold
Fabergé 18K Rose Gold Oval Spessartite Ring w/ Diamond Set Shoulder, US Clients
By Fabergé
Located in London, GB
diamonds total weight 0.20ct, 1 round ruby total weight 0.02ct Origin Tanzania Complimentary: - Gift
White Diamond, Rose Gold
1.96 Carat Vivid Red Ruby & 1.10 Carat Tanzanian Tsavorite 18K Designer Ring
By Malpani Jewels
Located in Hung Hom, HK
An elaborate and intricate design containing 1.96 carat of vivid red ruby and 1.10 carat of
Diamond, White Diamond, Ruby, Tsavorite, 18k Gold
Antique Platinum GIA 1.34ctw No Heat Oval Deep Red Ruby Baguette Diamonds Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Ruby - Oval Cut - Prong Set - Deep Red Color - No Heat - 1.08ct
Diamond, Ruby, Platinum
12.12 Carat GRS No Heat Oval Vivid Red Ruby Diamond Cluster Earrings Winza
Located in New York, NY
GRS Certified No Heat Tanzania Matching Ruby Cluster earrings. 3.69ct. & 3.63ct. 9.72 X 8..06
Diamond, Ruby, 14k Gold, White Gold
12.12 Carat GRS No Heat Oval Vivid Red Ruby Diamond Cluster Earrings Winza
Located in New York, NY
GRS Certified No Heat Tanzania Matching Ruby Cluster earrings. 3.69ct. & 3.63ct. 9.72 X 8..06
Diamond, Ruby, 14k Gold, White Gold
New 18k Gold Gia 1.86ctw No Heat Sugarloaf Cabochon Cut Ruby & Diamond Ring
Located in Montclair, NJ
: Natural Ruby Geographic Origin: Tanzania Treatment: No Indications of Heating Weight: 1.51 carats
Diamond, Ruby, 18k Gold
Art Deco GIA Certified 3.50 Carat Natural Ruby Cabochon, Onyx, and Diamond Ring
Located in Narberth, PA
frames a 3.50ct natural no-heat Tanzanian ruby at the center of a filigree mounting. The gorgeous ruby is
Diamond, Onyx, Ruby, Platinum
14k White Gold GIA Oval No Heat Ruby w/ Diamond Halo Concentric Ring
Located in Montclair, NJ
: Transparent Color: Red Species: Natural Corundum Variety: Natural Ruby Geographic Origin: Tanzania Treatment
Diamond, Ruby, Gold, 14k Gold, White Gold
877.81 Carats Natural Tanzania Ruby Ganesha Carving Statue
By Vaibhav Dhadda
Located in Jaipur, Rajasthan
Introducing a breathtaking masterpiece, the 877.81 Carats Natural Tanzania Ruby Ganesha Carving
Ruby
Fine Ruby and Diamond Ring 7.56 Carat in 18 Karat White Gold
Located in Miami, FL
to be Tanzania. ( fine quality ruby from Tanzania are rare ), traditional heat only. Top of the ring
Diamond, Ruby, 18k Gold, White Gold
14.84 Carat Natural Red Tanzania Cushion Ruby White Gold Certified Earrings
Located in London, GB
Natural, unheated Ruby Earrings. 18 Karat White Gold. STONE TYPE Ruby DISPLAY COLOR Red SHAPE
Diamond, White Diamond, Ruby, Gold, 18k Gold, White Gold
Certified 4.21 Carat Unheated Tanzanian Ruby Diamond 18 Karat White Gold Ring
By Les Pierres de Julie
Located in Paris, FR
Stunnig ring set with a 4.21 carat unheated Tanzanian cushion cut ruby (Carat Gem Lab Certificate
Diamond, Ruby, 18k Gold, White Gold
18 Carat Natural Tanzanian Neon Vibrant Pinkish Red Mahenge Spinel
By D and A Style
Located in Singapore, SG
Extremely rare Mahenge spinel from Tanzania with fascinating color. The stone with such size and
Ruby, Sapphire, Spinel
6, 08 Carat Natural Tanzanian Neon Vibrant Pinkish Red Mahenge Spinel
By D and A Style
Located in Singapore, SG
Extremely rare Mahenge spinel from Tanzania with fascinating color. The stone with such size and
Ruby, Sapphire, Spinel
11.30 Carat Natural Tanzanian Mahenge Spinel GRS Certificate
By D and A Style
Located in Singapore, SG
Amazing and unusual Mahenge spinel from Tanzania with unbelivable color. The stone with such size
Ruby, Spinel, Gold, 18k Gold, Rose Gold, White Gold, Yellow Gold, Platinum
7, 53 Carat Natural Tanzanian Neon Vibrant Orangy Pink Mahenge Spinel
By D and A Style
Located in Singapore, SG
Extremely rare Mahenge spinel from Tanzania with fascinating color. The stone with such size and
Ruby, Sapphire, Spinel
6, 03 Carat Natural Tanzanian Neon Vibrant Reddish Pink Mahenge Spinel
By D and A Style
Located in Singapore, SG
Extremely rare Mahenge spinel from Tanzania with fascinating color. The stone with such size and
Ruby, Sapphire, Spinel
10, 21 Carat Natural Tanzanian Neon Vibrant Reddish Pink Mahenge Spinel
By D and A Style
Located in Singapore, SG
Extremely rare Mahenge spinel from Tanzania with fascinating color. The stone with such size and
Sapphire, Spinel, Ruby, Gold, 18k Gold, Rose Gold, White Gold, Yellow Go...
Steven Battelle 11.5 Carats Rainbow Moonstone Cabochon 18K Gold Ring
By Steven Battelle
Located in Soquel, CA
A magical high dome 12 x 14 mm rainbow moonstone cabochon enchants surrounded by an organic line texture wide sculpted bezel in this classically simple 18K gold ring design. The mute...
Moonstone, Rainbow Moonstone, 18k Gold
Dainty Heart Cut Ruby Unisex Ring in 18k Solid Yellow Gold, Signet Ring for Her
By VR Jewels
Located in New York, NY
Dainty Heart Cut Ruby Unisex Ring, Signet Ring for Her in 18K Gold featuring natural ruby of 0.25 carats. The gorgeous handcrafted ring goes with every style, every occasion or any o...
Ruby, Gold, 18k Gold, Yellow Gold
Emilio Jewelry Gia Certified 12.00 Carat Pink Diamond Ring
By Emilio!
Located in New York, NY
From Emilio Jewelry, a well known and respected wholesaler/dealer located in the Iconic Gem Tower/Gia Building in New York's Diamond District. This item has been appraised by the exp...
Pink Diamond
GIA Certified 7.0 Carat Heart Shape Pink Diamond Cocktail Ring
By GEMME
Located in New York, NY
Heart Shape Diamond weighing 7.0 Carat with GIA certificate stating the Diamond is of Fancy Pink color and VS2 Clarity. Surrounded by reverse set White Diamonds weighing 5.02 Carats....
Pink Diamond, Platinum
$165,000
Turquoise and Diamond Necklace
By Diamond Scene New York
Located in New York, NY
An INCREDIBLE necklace with Fine Persian Turquoise. 102 carats of Persian Turquoise 59.95 carats of white pear, round and marquise cut diamonds. Set in platinum 18 inch leng...
Diamond, Turquoise, Platinum
$76,000Sale Price|20% Off
GRS Certified 7.30 Carat VIVID Green Emerald Half moon Diamond ring
By Antinori Fine Jewels
Located in Chicago, IL
An exquisite 7.30 oval green vivid green emerald certified by GRS zambian origin side diamonds are half moons and weight 1 carat e color vvs clarity set in solid platinum
Diamond, White Diamond, Emerald
Emilio Jewelry Grs Certified Burma No Heat Ruby
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, Featuring one of the rarest Natural Rubies in the world. This ruby has r...
Ruby, Platinum
Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood 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, Please inquire for more images, certificates, and details. Zoom meetings...
Ruby
GIA 6.80 Carat Natural Colombian Emerald Solitaire Ring 18K Gold
By Emeralds Maravellous
Located in US
GIA Certificate Colombian Emerald Solitaire Engagement Ring, set in yellow gold 18k The Center Stone in a Classic shape/cutting style: Emerald Cut full of brilliance and life! Featu...
Emerald, 18k Gold, Gold, Yellow Gold
Kashmir Sapphire No Heat Diamond Platinum 3-Stone Engagement Ring
By Dover Jewelry
Located in Miami, FL
Rare Sapphire! All Natural No Heat Sapphire from Kashmir region GIA certified. This very rare sapphire ring was inspired by a 3 stone motif and crafted in luxurious Platinum. Featur...
Diamond, Sapphire, Platinum
GIA 6.26 Carat Natural No Heat Burma Red Spinel Diamond Engagement Platinum Ring
By Emeralds Maravellous
Located in US
Fine unheated GIA-certified natural Burma red spinel and diamond engagement three-stone ring in platinum. The cushion-cut natural Burmese red spinel weighs a total of 5.16 carats and...
Spinel, Diamond, Platinum
GIA Certified 15.87 Carat Emerald-Cut Diamond Solitaire Engagement Ring
Located in Zurich, CH
Magnificent 15.87 carat emerald-cut diamond solitaire engagement ring. Classic solitaire ring centering upon a stunning emerald-cut diamond of 15.87 carats, I / VVS2. The ring mount ...
Diamond, Gold, 18k Gold, Platinum, Rose Gold
Emilio Jewelry GIA Certified 7.02 Carat Natural Blue Diamond Ring
By Emilio!
Located in New York, NY
From the museum vault at Emilio Jewelry New York, One of the rarest and only diamonds of its size and color. Please inquire for details.
Blue Diamond
$960,000Sale Price|20% Off
PLATINUM AWARD EYE CLEAN GRS Certified 6 Carat BURMA NO HEAT RUBY Ring
Located in Chicago, IL
🔥 EXCEPTIONAL GRS-CERTIFIED 6 CARAT BURMA NO HEAT RUBY RING 🔥 Presenting a rare and investment-grade 6.00-carat Burma Ruby, GRS-certified, NO HEAT, and awarded the PLATINUM AWARD f...
Diamond, Ruby, Platinum, 18k Gold, Yellow Gold
Pigeon's Blood Burmese Ruby and Diamond Necklace/Tiara, circa 1915
Located in London, GB
Pigeon's blood Burmese ruby and diamond necklace/tiara. Set to the centre with twenty six oval old cut natural unenhanced Pigeon's blood Burmese rubies in open back claw settings, ra...
Diamond, Ruby, Rose Gold, Platinum
10.00 Carat GIA Mozambique Ruby & Half Moon Diamond Ring 18K Yellow Gold
Located in Carmel-by-the-Sea, CA
An exceptional Ruby in size and beauty as well as value. In a market of rising ruby prices with no signs of slowing down, Ruby desirability and value are at an all time high. Here we...
Diamond, Ruby, 18k Gold, Yellow 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.