Skip to main content
Video Loading
Want more images or videos?
Request additional images or videos from the seller
1 of 11

5.81 Carat Oval Cut Vivid Red Thai Siam Ruby & Diamond Halo 18K Ring

$375,000
£281,710.49
€324,858.02
CA$520,361.42
A$578,236.34
CHF 303,001.97
MX$7,091,037.83
NOK 3,864,613.61
SEK 3,635,686.60
DKK 2,424,602.09
Shipping
Retrieving quote...
The 1stDibs Promise:
Authenticity Guarantee,
Money-Back Guarantee,
24-Hour Cancellation

About the Item

GRS certified 5.81 carat vivid red oval cut natural ruby from Siam (Thailand). This ruby exemplifies the level of rarity and beauty we reserve for our most discerning clients. This ruby is an investment-grade gemstone, exhibiting an ideal balance of color, clarity, transparency, luster, and brilliance. It meets the highest standards in both quality and value. In rubies, the key factor is color—specifically, how red and how intense that red is. This stone is exceptionally red, with the vivid color being its most striking feature. Typically, rubies with such intense color tend to lose some transparency or become slightly cloudy. However, this gem maintains outstanding brilliance and clarity. It is loupe-clean and precisely cut in an oval brilliant shape. At 5.81 carats, the combination of these characteristics makes it an extremely rare and distinguished gemstone. Details: Item Type: Natural Ruby & Diamond Halo Ring Metal: 18K White Gold Weight: 7.05 Grams Ring Size: 6 Center Stone Details: Type: Natural Ruby Carat: 5.81 Color: Vivid Red Cut: Oval Origin: Siam (Thailand) Treatment: Heated Certification: GRS #GRS2023-095775 Side Stones Details: Type: Natural Diamond Cut: Round Brilliant Color: D-F (White) Clarity: VVS1 – VS1 (Eye-clean) Carat: 3.30 ctw (Halo), 0.12 ctw (Accent Diamonds) This unmistakably natural and noticeably valuable ring is a rare find—its vivid red ruby and white, eye-clean diamonds create a piece unlike any other.

More From This Seller

View All
6.45 Carat No-Heat Burma Ruby Oval Cut & Round Diamond Halo Ring
Located in Miami, FL
GRS Certified 6.45 carat unheated oval cut Ruby from Burma. Adorned with a diamond halo of 12 round cut white diamonds totaling 2.96 carats (0.25ct each). All set in a luxurious 18K ...
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Ruby, Diamond, White Gold, 18k Gold, Gold

AGL Certified 2.19 Carat No Heat Burma Ruby & Trapezoid Diamond 3 Stone Ring
Located in Miami, FL
AGL Certified 2.19 carat no heat Burma ruby ring. Adorned with 2 trapezoid cut diamonds totaling 0.97 cttw. The gemstones are set in prong setting; ruby is set in 18k yellow gold and...
Category

21st Century and Contemporary Burmese Contemporary Three-Stone Rings

Materials

Diamond, Ruby, Gold, 18k Gold, White Gold, Yellow Gold

AGL Certified 3.8 Carat Oval No Heat Burma Ruby Ring & Diamond Halo in Platinum
By Gad & Co.
Located in Miami, FL
AGL Certified 3.80 carat Purplish Red oval cut no heat Burma Ruby. This ruby is radiating a rich, vivid red color. Truly spectacular considering no heat treatment. Mined from the Mog...
Category

2010s Burmese Modern Cocktail Rings

Materials

Ruby, Diamond, Platinum, Yellow Gold, 18k Gold

GRS Certified 5.09 Carat Oval Burma Ruby & Diamond Halo Cluster Ring
Located in Miami, FL
GRS Certified 5.09 carat oval cut Burmese origin ruby and diamond halo ring. Adorned with 2.10 carats of 24 round cut white diamonds. The ruby is prong set in 18k yellow gold and the...
Category

21st Century and Contemporary Burmese Art Deco Cocktail Rings

Materials

Ruby, Diamond, White Gold, 18k Gold

Gubelin Certified 4.47 Carat Ruby & Trillion Cut Diamond Sides in 18K White Gold
By Gad & Co.
Located in Miami, FL
Indulge in sophistication with this ruby and diamond three stone ring ring. Gubelin certified, this natural 4.47 carat oval cut red ruby is accompanied by two triangular shaped diamo...
Category

2010s North American Modern Three-Stone Rings

Materials

Ruby, Diamond, White Gold, 18k Gold

2.58 Carat Oval Thai Ruby & Diamond Halo Retro Wide Frame Ring
By Gad & Co.
Located in Miami, FL
GRS Certified 2.58 Carat Oval Cut Thai Ruby with Diamond Three Rings Of Round Cut Diamond Halo in Two Tone 18k Gold. Retro inspired design vintage ring setting. 16 round-cut natura...
Category

21st Century and Contemporary Thai Contemporary Cocktail Rings

Materials

Ruby, Diamond, Yellow Gold, White Gold, 18k Gold

You May Also Like

3.11 Carat Oval Cut Natural Thai Ruby Ring with 0.50 Carat Total of Diamonds
Located in Houston, TX
Platinum three-stone ring set with one 3.11 carat oval cut natural Thai ruby, comes with its very own certification from the AGL laboratory, and approximately 0.50 carats total weigh...
Category

2010s Engagement Rings

Materials

Diamond, Ruby, Platinum

Vintage 2.79 Carats No Heat Burmese Ruby & Diamond Halo Engagement Ring
Located in New York, NY
A gorgeous engagement ring, featuring a vibrant 2.79 carats oval cut ruby certified by AGL as having a Burmese origin with no indications of heat treatment and SI clarity, set with a...
Category

Mid-20th Century American Contemporary Engagement Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

GIA Certified 1.54 Carat Oval Cut Red Ruby .88 Carat Diamonds Ring 18 Karat
Located in New York, NY
GIA Certified 1.54Ct Natural Ruby Ring Report: 2175098047 Oval cut Clean Clarity 6.67 X 6.19 X 4.61mm GIA: Red Heat Only. .88ct. side round diamonds. G-color vs-2 clarity....
Category

2010s American Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

GIA Certified Thailand Ruby 1.71ct Halo Diamond Ring 18kt Vivid Red Prime
Located in New York, NY
GIA Certified Ruby Diamonds Ballerina Cocktail Ring. 1.71ct. GIA Oval Bright Red Ruby Report: 2175034926 (VS) Clean Clarity & T...
Category

2010s American Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

3.58 Carat Oval Cut Ruby and Diamond Halo Ring in 18K White Gold
Located in NEW YORK, NY
A stunning ring showcasing a rich Red Oval Cut Ruby weighing 3.58 carats surrounded by a row of diamonds. Flanking the center stone are brilliant cut 2 pe...
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

GIA Certified 1.95 Carat Natural Ruby Diamond Ring 18 Karat Vivid Red and Origin
Located in New York, NY
Red Prime Ruby Ring 1.63ct. Natural GIA Certified Ruby Ring GIA Certified Report ID: 6173627333 7.31 X 5.22 X 4.59mm Full cut oval...
Category

2010s American Solitaire Rings

Materials

Diamond, Ruby, 18k Gold, White Gold