3.89 Carat Thai Oval Ruby with GIA Certificate
Located in New York, NY
3.89 Carat Thai Oval Ruby, GIA Report 6173102771. 10.97 x 8.75 x 4.19mm. Natural, heated, red.
2010s Thai Loose Gemstones
Ruby
3.89 Carat Thai Oval Ruby with GIA Certificate
Located in New York, NY
3.89 Carat Thai Oval Ruby, GIA Report 6173102771. 10.97 x 8.75 x 4.19mm. Natural, heated, red.
Ruby
$6,626Sale Price|60% Off
Exceptional Untreated 1.53 carats Vibrant Red Ruby (Swiss Certified)
Located in London, GB
Certified by Gem Research Swisslab (GRS), this beautiful ruby displays a Vibrant Red colour — a lustrous red that is considered the pinnacle of color grading for rubies.
Ruby
Exceptional Untreated 2.15 carat 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...
Ruby
$10,354Sale Price|50% Off
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...
Ruby
0.63Ct GUILD Certificate Ruby Burma Pigeon blood Color Eye Clean quality
Located in bangkok, TH
RMA75 0.63 Cts Guild Certified Unheated Ruby Burma Pigeon Blood Color Eye clean quality GEM ESCRIPTION: Species: Natural Corumdum Variety: Natural Ruby Weight: 0.63ct Color...
Ruby
$3,880Sale Price|20% Off
GIA Certified No Heat Natural Star Ruby Loose Stone Weighing 4.84 Carats
By OGI Ltd
Located in New York, NY
A rare, investment quality GIA star ruby weighing 4.84 carats, no indication of heating GIA REPORT 6224671008 Natural star rubies are relatively rare and highly sought after by gem e...
Ruby, Star Ruby
39.75 Carat No Heat Vivid Red Ruby Sugarloaf Pair
Located in Hong Kong, HK
39.75 Carat No Heat Vivid Red Ruby Sugarloaf Pair: A gorgeous and rare gem, it is a pair of natural unheated sugarloaf-cut vivid red rubies weighing 39.75 carat. Hailing from Tanzan...
Ruby
1.27 Carat Heart-Shaped Mozambique No Heat Ruby
Located in Hong Kong, HK
A rare gem, it is a natural heart-shaped intense red ruby weighing 1.27 carat. Hailing from Mozambique, the ruby is unheated, has excellent cutting proportions, and possesses an int...
Ruby
$2,400Sale Price|20% Off
Unheated Certified Natural Loose Ruby Mozambique Mine 4.61 Carats
Located in Peshawar, PK
Faceted Ruby Weight: 4.61 Carat Dimension: 8.86 x 7.70 x 6.54 Mm Colour: Purplish Red Origin: Mozambique Treatment: Non Certificate: AGA Certificate Available Mozambique rubie...
Ruby
ALGT Certified 1.72 Carat Natural Tanzania Deep Red Ruby
Located in AMSTERDAM, NL
On average, high-quality Tanzanian rubies can range from $800 to $3,000 per carat, making them a valuable addition to any gemstone collection
Ruby
$2,320Sale Price|20% Off
Matching oval rubies untreated matching pair 100% natural certified 6.5mm
Located in Jupiter, FL
Rare matching pair of rubies, untreated and certified. NATURAL GEMSTONE(S): NATURAL RUBY Clarity/Color: Slightly Included/Pinkish Red Cut: Rectangular 6.5x5mm Treatment: none MTP ...
Ruby
$1,040Sale Price|20% Off
2.31 Ct ICA Certificate Unheated Star Ruby Burma transparent Pinkish red No heat
Located in bangkok, TH
RMA115~ 2.31 Ct ICA Certificate Natural Star Ruby unheated Burma transparent Pinkish red Gemstone GEM DESCRIPTION: Species: Natural Corundum Variety: Natural Star Ruby unheated Weig...
Ruby, Star Ruby
Natural Heated Loose Madagascar Red Ruby 2.26ct GIA Pear Shape
Located in Carmel By The Sea, CA
Natural Heated Madagascar Ruby 2.26ct GIA Pear Shape Loose Gemstone This item is offered on consignment on behalf of a client; all serious and reasonable offers are presented for co...
Ruby
6.69 Ct No heat GRS Certificate Natural Burma Ruby MOGOK Unheated Color Red
Located in bangkok, TH
RMA110 6.69ct GRS Certificate Natural No heat Burma Ruby Mogok Color Red Eye clean Clarity Oval Gemstone GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Burma Ruby N...
Ruby
GIA Certified 1.55 Carat Burma No Heat Natural Oval Cut Ruby
Located in Kowloon, Hong Kong
This beautiful 1.55 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
GIA Certified 1.12 Carat Burma No Heat Natural Cushion Cut Ruby
Located in Kowloon, Hong Kong
This beautiful 1.12 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
1.49 Carat GIA Certified No Heat Pear Shape Ruby
Located in Great Neck, NY
GIA Certified Pear Shape Ruby 1.49 Carats (8.67x5.42x3.65) mm NO HEAT
Ruby
1.36 Carat GIA Certified No Heat Pear Shape Ruby
Located in Great Neck, NY
GIA Certified Pear Shape Ruby 1.36 Carats (8.41x5.95x3.12) mm NO HEAT
Ruby
GIA Certified 1.66 Carat Burma No Heat Natural Cushion Cut Ruby
Located in Kowloon, Hong Kong
This stunning 1.66 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
GIA Certified 1.99 Carat Burma No Heat Natural Oval Cut Ruby
Located in Kowloon, Hong Kong
This beautiful 1.99 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
GIA And GUILD 4.07 Ct Natural Unheated Mozambique Oval Red Ruby Pigeons Blood
Located in Roma, IT
Offered as a loose gemstone, this extraordinary ruby also presents a unique opportunity to create a truly bespoke jewel.
Ruby
1.43Ct No heat GRS Certificate Natural Burma Ruby Unheated Red color Oval shape
Located in bangkok, TH
RMA130 1.43ct GRS Certificate Natural Burma Ruby Unheated red color oval shape gemstone GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby Unheated Weight: 1.43ct ...
Ruby
No Heat 2 Indian Pear-Shaped Buff Rubies Cts 20.22
Located in Hong Kong, HK
No synthetic or lab-grown gemstones are used in our products, and the gold content is accurate.
Ruby
$16,000Sale Price|20% Off
2.26ct AIGS Certificate Unheated Burma Ruby Pigeon Blood color no heat
Located in bangkok, TH
RMA123 2.26ct AIGS Certificate Natural Ruby No heated Burma Burmese Pigeon Blood color eye clean Gemstone GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby No heated ...
Ruby
$1,520Sale Price|20% Off
AIGS certificated 2.12ct Unheated ruby pink eye cleanest clarity Mozambique
Located in bangkok, TH
2.12ct Unheated ruby very clean clarity Mozambique Rare size and clarity ruby with AIGS certification RA-22 Name: Ruby Unheated Weight: 2.12ct Origin: Mozambique Color: pink Clar...
Ruby
1.13 Ct No heat GIA Certificate Natural Burma Ruby Unheated Pigeon blood Color
Located in bangkok, TH
RMA133 1.13 Ct GIA Certificate Natural Ruby Burma Unheated pigeon blood Gemstone GEM DESCRIPTION Species: Natural Ruby Variety: Natural Ruby unheated Weight: 1.13ct Color: Pigeon b...
Ruby
$35,200Sale Price|20% Off
Unheated 6.10 Ct Burma Ruby Pair, Mogok Mine, Eye Clean Clarity, Cushion Cut
Located in bangkok, TH
GG17: 6.10ct Pair Unheated Burma ruby Mogok mine * commercial quality fine clarity nearly eye clean Low budget GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby ...
Ruby
1.25 Carat Natural Loose Spinel Gemstone For Jewellery
Located in Peshawar, PK
Found in a spectrum of hues, including red, pink, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire throughout history.
Spinel, Other
$2,700Sale Price|55% Off
AIGS Certified 2.05ct Pinkish-Red Oval Ruby, 9.55x6.78x3.39 mm
Located in เกาะสมุย, TH
Popular top color and good clarity oval pinkish red ruby. Highly saturated red with medium tone and akin to pigeon's blood.
Ruby
Contemporary 37.30 Carats Round Ruby Cabochons, No Heat, Mozambique Origin
Located in Hong Kong, HK
No heat Burma Ruby Cabochones Sourced from Mozambique, these rubies showcase a rich, deep red hue with a smooth, polished finish that radiates elegance and timeless beauty.
Ruby
Green Granat Heart Necklace with Star Ruby Cabochon and Citrine Original Design
By Nicofilimon the Jewelry Designer
Located in Athens, GR
Green Heart - Nicofilimon 2021 in this One-Of-a-kind creation by Nicofilimon you have the privilege to choose one of the four variations of the design and it will by handcrafted espe...
Citrine, Ruby, Star Ruby
$384Sale Price|20% Off
1.35 Carat Natural Loose Greenish Blue Spinel Gemstone
Located in Peshawar, PK
Found in a spectrum of hues, including red, pink, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire throughout history.
Spinel, Other
AIGS Certified 5.06 Carat Mozambique No Heat Vivid Purplish Red Oval Cut Ruby
Located in Kowloon, Hong Kong
Discover the unparalleled beauty of this 5.06-carat vivid purplish red ruby, a rare gemstone originating from the legendary mines of Mozambique.
Ruby
$280Sale Price|20% Off
1.25 Carat Natural Loose Teal Blue Spinel Gemstone
Located in Peshawar, PK
Found in a spectrum of hues, including red, pink, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire throughout history.
Spinel, Other
$384Sale Price|20% Off
1.50 Carat Natural Loose Lavender Blue Spinel Gemstone
Located in Peshawar, PK
Found in a spectrum of hues, including red, pink, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire throughout history.
Spinel, Other
Rare Natural Burma Myanmar Pinkish Red Ruby 1.94CT GRS Certified Emerald Cut
Located in New York, NY
GEMSTONE INFORMATION Retail Price - $15,000 Item Stock Number - RU87476356599 Certificate Number - GRS2012-101920 Shape - Emerald Carat Weight - 1.94ct Measurements - 8.33 x 6.70 x ...
Ruby
$5,600Sale Price|20% Off
Guild Certified 2.91ct Unheated Burmese Ruby, Cushion Cut, Vivid Red
Located in Peshawar, PK
They are renowned for their rich, fiery red colour and unparalleled quality, making them some of the most coveted gemstones in the world Burma ruby benefits include enhancing financ...
Ruby, Other
2.04Ct GRS Certificate Natural No heated Ruby Burma Pigeon Blood Color
Located in bangkok, TH
GG45 GRS Certificate Natural Unheated Burma Ruby Pigeon Blood Color Fine Quality GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby Unheated Weight: 2.04ct Color...
Ruby
1.00 Ct GRS Certificate Natural Burma Ruby No heated Pigeon Blood Color
Located in bangkok, TH
RMA126 GRS Certificate Natural Burma Ruby Unheated pigeon blood color gemstone GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby Unheated Weight: 1.00ct Color: p...
Ruby
GIA Certified 0.52 Carat Burma No Heat Natural Vivid Red Ruby
Located in Kowloon, Hong Kong
This exquisite 0.52 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
2.25 Carat GRS Certified Octagon Cut Vivid Purple-Red Ruby
Located in Hong Kong, HK
A very rare gemstone, it is a GRS certified natural octagon cut vivid purple-red ruby weighing 2.25 carat.
Ruby
2 Burmese Pigeon’s Blood Rubies Cts 2.22 With GRS Certificate
Located in Hong Kong, HK
These GRS-certified Burmese Pigeon’s Blood Rubies are a mesmerizing duo totaling 2.22 carats.
Ruby
Gubelin Certified 1.13 Carat Burma No Heat Natural Vivid Red Ruby
Located in Kowloon, Hong Kong
This exquisite 1.13 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
Gubelin Certified 0.893 Carat Burma No Heat Natural Vivid Red Ruby
Located in Kowloon, Hong Kong
This exquisite 0.893 carat Burma no-heat vivid red ruby is a rare and valuable gemstone, distinguished by its exceptional color and provenance.
Ruby
Loose Ruby, Oval Cut .95 Carat Pinkish Red Solitaire
Located in Greensboro, NC
Weight: .95ct Treatment: Heating Cut: Oval Color: Pinkish Red Dimensions (mm): 7.02 x 5.06 x 3.55 Condition: New Please check out the enlarged pictures. Thank you for takin...
Ruby
Loose Ruby, Oval Cut .99 Carat Pinkish Red Solitaire
Located in Greensboro, NC
Weight: .99ct Treatment: Heating Cut: Oval Color: Pinkish Red Dimensions (mm): 7.12 x 4.99 x 2.94 Condition: New Please check out the enlarged pictures. Thank you for takin...
Ruby
23.48 Carat Natural Oval Cabochon Star Ruby GIA Certified No Heat With Ring Mold
Located in Carmel By The Sea, CA
This item is offered on consignment on behalf of a client; all serious and reasonable offers are presented for consideration, and we work diligently to achieve a mutually agreeable o...
Ruby, Star Ruby
$2,737Sale Price|25% Off
GIA Certified Natural Burma Ruby 3.59 Carats No Heat Carved Double Cabochon Gem
By OGI Ltd
Located in New York, NY
Perfect For Custom engagement rings Luxury pendant necklaces Collector gemstone portfolios Heirloom jewelry creations July birthstone gifts Anniversary and milestone cele...
Ruby
$1,200Sale Price|20% Off
1.00 Ct AIGS Certificate Unheated Ruby Pigeon blood color eye clean No heat
Located in bangkok, TH
RA102 1.00 Ct AIG Certificate Natural Ruby Unheated Pigeon blood eye clean quality Mozambique Gemstone GEM DESCRIPTION Species: Natural Corumdum Variety: Natural Ruby Unheated Weigh...
Ruby
Rare No Heat Natural Mozambique Oval Vivid Red Ruby 3.00CT GRS Pigeon Blood
Located in New York, NY
Retail Price - $50,000 Item Stock Number - RR874633232666 Certificate Number - GRS2023-035915 Shape - Oval Carat Weight - 3.00ct Measurements - 9.47 x 7.27 x 4.94 Color - Vivid Red, ...
Ruby
Untreated Ruby Andilamena Madagascar 1.89 ct GRA certificate 9x5x4 mm Cushion
Located in Viena, Viena
Untreated ruby from Andilamena / Madagascar 1.89 ct with GRA certificate 9x5x4 mm" GRA certified untreated ruby (Andilamena / Madagascar) in fine ruby color red/violet with sma...
Ruby
$2,000Sale Price|37% Off
Pair 1.04 Ct GIA Certificate Unheated Burma ruby pigeon blood color No heat
Located in bangkok, TH
RMC36 Pair 1.04 Ct GIA Certificate Natural Burma ruby unheated pigeon blood color eye clean quality Gemstone GEM DESCRIPTION Species : Natural Corumdum Variety: Natural Ruby unheated...
Ruby
GIA Certified 1.37ct Unheated Burmese Ruby, Cushion Cut, Art Deco
Located in Singapore, SG
Kindly note that the stated price for this item is fixed and non-negotiable. We appreciate your understanding and respect for our pricing decision. Myanmar (Burma) rubies are univer...
Ruby
3.10 Carat Natural Loose Spinel Lot Gemstone For Jewellery
Located in Peshawar, PK
Found in a spectrum of hues, including red, pink, blue, violet, and orange, spinel has often been mistaken for other gemstones like ruby and sapphire throughout history.
Spinel, Other
Rare No Heat Natural Thailand Purplish Red Ruby 1.22ct GIA Pigeon Blood Oval
Located in New York, NY
GEMSTONE INFORMATION Retail Price - $6,900 Item Stock Number - RU316537248577 Certificate Number - GIA 2231474014 Shape - Oval Carat Weight - 1.22ct Measurements - 7.15 x 5.46 x 3.6...
Ruby
Rare No Heat Natural Mozambique Emerald Cut Red Ruby 3.27CT GRS Certified
Located in New York, NY
Retail Price - $20,000 Item Stock Number - RR874633232665 Certificate Number - GRS2023-048257 Shape - Emerald Carat Weight - 3.27ct Measurements - 8.95 x 7.05 5.24 Color - Red Origin...
Ruby
$2,160Sale Price|20% Off
36.27 Ct ICA Certificate Unheated Ruby Mozambique Pinkish Red color No heat
Located in bangkok, TH
RA85 ICA certified Natural Ruby Unheated huge size collection Name : Natural Ruby Weight :36.27 Carats Size:19.18*15.12*12.57mm Color: Pinkish Red Clarity: Clean Origin: Mozambique ...
Ruby
GRS Certified 5.94 Carat No Heat Vivid Orangy-Red Loose Ruby
Located in Miami, FL
- GRS Report Number: GRS2017-128961 - Date 21 December 2017 - Object Description: One faceted gemstone - Identification: Natural Ruby - Weight: 5.94 ct - Dimensions: 12.74 x 10.36...
Ruby
Natural Unheated Red Mozambique Ruby 1.31 carats with GIA Report / JupiterGem
Located in Los Angeles, CA
With its modest carat weight, round shape, and untreated nature, this Unheated Mozambique Ruby stands as an appealing and valuable gemstone, suitable for various jewelry designs or a...
Ruby
$3,200Sale Price|20% Off
Guild Certified 1.22 Carat Natural Loose Pigeon Blood Ruby From Burma
Located in Peshawar, PK
They are renowned for their rich, fiery red colour and unparalleled quality, making them some of the most coveted gemstones in the world Burma ruby benefits include enhancing financ...
Ruby, Other
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.