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2.91 Carat Yellow Diamond Radiant Three Stone Ring 18K Yellow Gold *1 of a Kind*
Located in New York, NY
) at its center, accented by two rare 0.73 carat matching fancy yellow trilliant-cut diamonds on each
Category

21st Century and Contemporary Three-Stone Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold

GIA Certified Princess Cut Diamond Engagement Ring 1.20 Carat
Located in Mayfair, London, London
centre, weighing 1.20ct. The diamond is D colour and VS2 in clarity. Set to either side are trilliant cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Fancy Intense Yellow Diamond Ring, Platinum and Gold, 14.51 Carats
Located in London, GB
, in a four claw, yellow gold setting, flanked by two trilliant-cut diamonds, weighing 1.51ct, F colour
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

White Diamond, Yellow Diamond, Gold, Platinum

Blue Sapphire and Yellow Diamond Three-Stone Ring
Located in Webster, NY
Sapphire & Diamond Gemstone Carat Weight: Approximately 10.12mm x 8.25mm Oval Cut Diamond Cut: Trilliant
Category

20th Century Three-Stone Rings

Materials

Yellow Diamond, Blue Sapphire, 14k Gold

Scarselli 7 Carat Fancy Yellow Diamond Ring in Platinum
By SCARSELLI
Located in New York, NY
diamond is accompanied by two white G trilliant cuts diamonds, VS clarity 0.84 total carat weight. The
Category

2010s American Contemporary Three-Stone Rings

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

Custom GIA Certified 1.73CTW Three Stone Diamond Engagement Ring
Located in Webster, NY
Diamonds: Trilliant Cut; Average Color F-G, Average Clarity VS, approximately .40CTW Metal: 14k Yellow Gold
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold

Antique Diamond Emerald Platinum Fleur De Lis Brooch and Pendant
Located in Miami, FL
color VS1 clarity and Trilliant shaped diamond above and below with Round faceted and Baguette diamonds
Category

Vintage 1930s Art Deco Drop Necklaces

Materials

Diamond, Emerald, Platinum

Vintage Austrian Diamond Gemstone 18k Confetti Band Ring
Located in Beverly Hills, CA
carre, one baguette, one marquise, and one trilliant cut diamond with a total weight of approximately
Category

Vintage 1980s Band Rings

Materials

Diamond, White Diamond, Emerald, Ruby, Sapphire, Blue Sapphire, Gold, 18...

Emilio Jewelry 6.68 Carat Colombian Emerald Diamond Ring
By Emilio!
Located in New York, NY
true gem. Set with Trilliant and round White diamonds totaling .59ct E-F color vs clarity. Set in
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Platinum

Mid-Century 3.70 Carats Emerald Cut Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
flanked by cathedral shoulders set with trilliant cut diamonds Weighing in total approximately 0.75 carat
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Tiffany Co. Yellow Diamond Yellow Gold Three-Stone Engagement Ring
By Tiffany Co.
Located in Southampton, PA
center stone is flanked by two white trilliant cut diamonds, weighing a total of ~1.00ct. Included Items
Category

20th Century American Engagement Rings

Materials

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

Vintage Emerald and Diamond Dress Ring, circa 1980s
Located in London, GB
two trilliant cut diamonds, each weighing 0.75 carat. They are I in colour and VS1 in clarity and are
Category

Vintage 1980s Unknown Engagement Rings

Materials

Diamond, Emerald, 18k Gold

Oval Ruby, Diamond, Platinum and Yellow Gold Ring
Located in San Francisco, CA
The ring features one 1.55 carat oval-shaped ruby flanked by 2 trilliant-cut diamonds, with a total
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

Bright Cornflower Blue Sapphire and Diamond Platinum Engagement Ring
Located in Stamford, CT
x 8.63 x 5.08mm, GIA certificate #2171080274 2 trilliant cut extra sparkly diamonds, approx. total
Category

Vintage 1960s Engagement Rings

Materials

Blue Sapphire, Diamond, Platinum

1.95 Carat Colombian Emerald and Diamond 18 Karat Gold Engagement Ring
Located in Miami, FL
Centering a 1.95 carat Colombian Emerald, flanked by two 0.20ct Trilliant-Cut Diamonds, and set in
Category

Late 20th Century Retro Engagement Rings

Materials

Diamond, White Diamond, Emerald, Gold, 18k Gold, Yellow Gold

Contemporary 2.00 Carats Pink Sapphire Diamond Platinum Three Stone Ring
Located in Philadelphia, PA
pink in color - medium saturation. Basket set and flanked by trilliant cut diamonds. Weighing
Category

21st Century and Contemporary Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Sapphire, Pink Sapphire, Platinum

Contemporary 1.60 Carats Pink Sapphire Diamond Platinum Three Stone Ring
Located in Philadelphia, PA
pink in color - medium dark. Basket set and flanked by trilliant cut diamonds. Weighing collectively
Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Diamond, White Diamond, Sapphire, Pink Sapphire, Platinum

Peter Suchy Emerald Yellow Diamond Platinum Ring
By Peter Suchy
Located in Stamford, CT
enhancement 2 fancy yellow to fancy light yellow trilliant cut diamonds, approx. total weight .87cts, SI1
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Emerald, Yellow Diamond, 18k Gold, Platinum, Yellow Gold

Natural Alexandrite Diamond Gold Platinum Ring 4.14 Carat
Located in New Orleans, LA
surrounded by 1.08 total carats of trilliant cut white diamonds, and all are set into platinum and 18K yellow
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Alexandrite, Diamond, 18k Gold, Platinum

Emilio Jewelry GIA Certified 4.10 Carat Emerald Diamond Platinum Ring
By Emilio!
Located in New York, NY
. Excellent crystal and transparency. Gem of a ring! Diamonds: Flanked by 2 Trilliant cut emeralds and round
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Platinum

Contemporary 7.55 Carats Ceylon Sapphire Diamond Platinum Unisex Ring GIA
Located in Philadelphia, PA
color - medium in saturation and Sri Lankan in origin. Talon set and flanked trilliant cut diamonds
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Vintage Diamond, Sapphire and Emerald Cluster Ring, circa 1950s
Located in London, GB
Set to centre in this unique cluster ring is a round brilliant diamond weighing 0.45 carat. It is
Category

Vintage 1950s Unknown Cluster Rings

Materials

Diamond, Emerald, Sapphire, Platinum

AGL 7.68 Carats Burma No Heat Sapphire Diamond Platinum Ring
Located in Beverly Hills, CA
and has no indications of heat treatments. Accented by two trilliant cut diamonds with a total weight
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Emilio Jewelry 7.82 Carat Certified Emerald Diamond Ring
By Emilio!
Located in New York, NY
sparkle and excellent transparency rarely seen in such large sized emeralds. Set with trilliant cut and
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Platinum

Emilio Jewelry Certified Vivid Blue Ceylon Sapphire Diamond Ring
By Emilio!
Located in New York, NY
without any treatment (only heat) Set with colorless trilliant cut diamonds approx .59ct E-F color vs
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Blue Sapphire, Platinum

Certified Fancy Yellow Three-Stone Diamond Ring in Platinum and 18 Karat Gold
Located in Webster, NY
Diamond Color: Fancy Light Yellow Center Diamond Clarity: VS1 Accent Diamonds : 2 Trilliant Cut Diamonds
Category

2010s Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

Van Cleef Arpels Fancy Yellow Radiant Cut Diamond Engagement Ring
By Van Cleef Arpels
Located in Boca Raton, FL
5.14 mm Mounting Details 18K Yellow Gold Setting with 2 Trilliant Cut Diamonds weighing 1.20ctw
Category

21st Century and Contemporary French Contemporary Engagement Rings

Materials

Diamond, 18k Gold

GIA Certified 3.91 Carat Sapphire Diamond Three-Stone Engagement Ring
Located in Stamford, CT
plaitnum with two trilliant cut side diamonds. 1 oval very light purple natural Sapphire, approx. total
Category

Late 20th Century Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Vintage 2.65 Carats Burma Ruby Diamond Platinum Three Stone Ring GIA
Located in Philadelphia, PA
Blood red in color - Burmese in origin. Basket set and flanked by two trilliant cut diamonds. Weighing
Category

Late 20th Century Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Ruby, Platinum

Vintage 2.65 Carats Burma Ruby Diamond Platinum Three Stone Ring GIA
Located in Philadelphia, PA
Blood red in color - Burmese in origin. Basket set and flanked by two trilliant cut diamonds. Weighing
Category

Late 20th Century Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Ruby, Platinum

Peter Suchy EGL 3.19 Carat Three-Stone Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
stone and two trilliant cut side diamonds, from the Peter Suchy workshop 1 cushion cut diamond 2.24ct I
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Oval Cut Fancy Yellow Three-Stone Diamond Engagement Platinum Ring
Located in New York, NY
-cut Fancy Yellow diamond. Two trilliant-cut diamonds are set on the shoulders totalling 0.37ct total
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Platinum

JB Star 2.67 Carat GIA Certified Emerald and Diamond Ring
By JB Star
Located in Palm Desert, CA
features 6 Marquise diamonds weighing 0.70 carats and 8 Trilliant cut Diamonds weighing 0.25 diamonds
Category

2010s Zambian Engagement Rings

Materials

Diamond, Emerald, Platinum

Platinum Three-Stone Fancy Yellow Radiant Cut Diamond Engagement Ring
Located in New York, NY
Radiant-cut Fancy Yellow and (VS1) in clarity. Two trilliant cut diamonds are set on the shoulders
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Platinum

Emilio Jewelry Certified 4.84 Carat Vivid Blue Ceylon Sapphire Diamond Ring
By Emilio!
Located in New York, NY
vivid Blue Color; 4.35ct ceylon Sapphire. Measuring 10.69x9.05mm. The side diamonds are trilliant cut F
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Blue Sapphire, Platinum

GIA Certified Platinum Round Brilliant Cut Diamond Engagement Ring 2.08 Carat
Located in Mayfair, London, London
colour and I3 clarity. There are two trilliant cut diamonds set to either side totalling approximately
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Emilio Jewelry Certified 6.68 Carat Colombian Emerald Diamond Ring
By Emilio!
Located in New York, NY
true gem. Set with Trilliant and round White diamonds totaling .59ct E-F color vs clarity. Set in
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Platinum

GIA No Heat 1.70 Carat Pinkish Orange Sapphire Diamond Necklace
Located in San Francisco, CA
pinkish orange sapphire is bezel-set below a similarly set trilliant-cut diamond weighing 0.21-ct, in 18k
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Sapphire, 18k Gold

Emilio Jewelry Certified 4.84 Carat Vivid Blue Ceylon Sapphire Diamond Ring
By Emilio!
Located in New York, NY
vivid Blue Color; 4.35ct ceylon Sapphire. Measuring 10.69x9.05mm. The side diamonds are trilliant cut F
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Blue Sapphire, Platinum

Contemporary 2.19 CTW Tsavorite Garnet Diamond Platinum Three Stone Ring
Located in Philadelphia, PA
green and prong set in basket Flanked by trilliant cut diamonds weighing 0.52 carat total G color with
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Tsavorite, Platinum

Custom Diamond Fan Cocktail Ring Made in 14k White Gold
Located in Webster, NY
Diamond Cut: Trilliant, Baguette and Round Brilliant Cut Diamonds Color: Average H-J Clarity: Average VS
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, 14k Gold, White Gold

AGL Certified 5.17 Carat Natural Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
ring. Matched with very sparkly trilliant cut side diamonds in a platinum setting. 1 purplish blue
Category

21st Century and Contemporary Engagement Rings

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

2.94 Carat Rubellite and Diamond 14 Karat White Gold Ring
Located in Scottsdale, AZ
Designer: custom design Material: 14k white gold Rubellite: one trilliant cut 2.94 carat Diamonds
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Rubelite, 14k Gold, White Gold

Scarselli 22 Carat Fancy Intense Yellow Diamond GIA in a Platinum Ring
By SCARSELLI
Located in New York, NY
SCARSELLI is featuring a 21 + carat Fancy Intense Yellow Radiant Cut Diamond VVS1 clarity
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Yellow Diamond, 18k Gold, Platinum

Dorfman 3.40ct Burma No-Heat Sapphire Diamond Ring GIA
Located in Litchfield, CT
trilliant-cut diamonds (G-H color, VS2-SI1 clarity, totaling one carat). The sapphire is a rare color
Category

1990s American Three-Stone Rings

Materials

White Diamond, Blue Sapphire, 18k Gold, Platinum

Mayors Certified 3.03 Carat Colombian Emerald Diamond Platinum Cocktail Ring
By MAYORS
Located in Miami, FL
. Emerald is accomponied by GIA lab report (GRADE F1). Aside two prong set, trilliant cut diamonds
Category

Vintage 1980s American Cocktail Rings

Materials

Diamond, Emerald, Platinum

18 Karat Gold Bangle with White and Pink Diamonds with 2 Trillion Cuts in Plat
Located in Palm Desert, CA
Princess Cut diamonds, weighing 7.69 carats. At each arrow end of the bangle in Platinum is a Trilliant
Category

2010s Bangles

Materials

Diamond, Pink Diamond, 18k Gold, Platinum

1980 s Vintage 6.20 Carats Pink Sapphire Diamond Platinum Three Stone Ring
Located in Philadelphia, PA
approximately 5.40 carats Basket set with split prongs and flanked by trilliant cut diamonds Weighing in total
Category

Vintage 1980s Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Pink Sapphire, Platinum

9.50 Carat Emerald Step Cut Green Tourmaline Diamond Gold Earrings
Located in Stamford, CT
trilliant cut diamonds. 1 fine Emerald step cut fine green natural Tourmaline, approx. total weight
Category

21st Century and Contemporary More Earrings

Materials

Diamond, Tourmaline, 14k Gold, Yellow Gold, Gold

14 Karat White Gold and Diamond Engagement Ring and Band Set
Located in Washington Depot, CT
sparkling set features the engagement ring detailed with four trilliant cut diamonds (1.0 TCW.) in its
Category

20th Century Engagement Rings

Materials

Diamond, White Gold

Peter Suchy 4.61 Carat Sapphire Diamond Platinum Three-Stone Engagement Ring
By Peter Suchy
Located in Stamford, CT
sapphire all-natural no heat and no enhancements with 2 trilliant cut side diamonds in a platinum setting
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

Peter Suchy 15.45 Carat Oval Ceylon Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
carats with two trilliant cut diamonds. The platinum setting is brand new from the Peter Suchy Workshop
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

2.00 Carat Pink Tourmaline and Diamond Ring 18 Karat Yellow Gold
Located in Scottsdale, AZ
Designer: custom design Material: 18k yellow gold Pink Tourmaline: one 2.00 carat trilliant cut
Category

21st Century and Contemporary More Rings

Materials

Diamond, Tourmaline, 18k Gold, Yellow Gold

Peter Suchy 6.42 Carat Sapphire Diamond Yellow Gold Dangle Earrings
By Peter Suchy
Located in Stamford, CT
. Beryllium treated for a bright orange yellow color. Accented with 2 trilliant cut diamonds, in 18k yellow
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Sapphire, Yellow Sapphire, Gold, 18k Gold, Yellow Gold

1.60 Carat Blue Topaz and Diamond Ring 18 Karat Yellow Gold
Located in Scottsdale, AZ
Designer: custom design Material: 18k yellow gold Blue Topaz: 1.60 carat trilliant cut blue topaz
Category

21st Century and Contemporary More Rings

Materials

Diamond, Topaz, 18k Gold, Yellow Gold

Green Tourmaline, Pink Sapphire and Diamond 14 Karat White Gold Ring
Located in Scottsdale, AZ
Designer: custom design Material: 14k white gold Green Tourmaline: 1.38 carat trilliant cut
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Tourmaline, 14k Gold, White Gold

Elongated Orange Sapphire and Yellow Diamond Three Stone in 18k Yellow Gold
Located in London, England
perfectly matched trilliant cut yellow diamonds. These diamonds are each securely three claw set and
Category

2010s British Modern Three-Stone Rings

Materials

Diamond, Yellow Diamond, Sapphire, Gold, 18k Gold, Yellow Gold

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Trilliant Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate trilliant diamond for your needs in our varied inventory. Frequently made of Gold, 14k Gold and White Gold, this item was constructed with great care. Find an antique version now, or shop for 13 vintage or 48 modern creation for a more contemporary example of these cherished accessories. Finding the perfect trilliant diamond may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. For this particular piece, 1 Carat and 1.5 Carat are consistently popular carat weights. Creating a trilliant diamond has been a part of the legacy of many jewelers, but those produced by Georgios Collections Inc, Lester Lampert and Tiffany Co. are consistently popular. A trillion cut version of this piece has appeal, but there are also oval cut and emerald cut versions for sale. When shopping for a trilliant diamond, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Trilliant Diamond?

On average, a trilliant diamond at 1stDibs sells for $5,800, while they’re typically $680 on the low end and $68,500 for the highest priced versions of this item.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.