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Oval Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
new handmade ring, with fine white diamonds form the Peter Suchy workshop and designed for this ring
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Alexander All GIA 20.33 Carat Ceylon Sapphire with Diamonds Three-Stone Ring 18k
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
. Oval Sri Lankan sapphire, 20.33 carats, heat, and a deep blue. 2 trilliant diamonds, 2.36 carat. Both
Category

21st Century and Contemporary Contemporary Three-Stone Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White Gold

Alexander Beverly Hills GIA 24.25ct Colombian Emerald Diamond 3-Stone Ring 18k
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
. Complemented with 2 trilliant diamonds, 1.41ct. Approximately G/H color and SI clarity. Two tone platinum and
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

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

Scarselli 5 Carat Fancy Yellow Cushion Cut VS2 Diamond Ring in Platinum GIA
By SCARSELLI
Located in New York, NY
white side trilliant diamonds. (2 = 1.55 carats) H color VS clarity. This ring may be sized or the
Category

2010s American Contemporary Engagement Rings

Materials

Yellow Diamond, 18k Gold, Platinum

GIA Certified 8.74 Carat Oval Sapphire and Diamond Ring in 18 Karat White Gold
Located in Chicago, IL
This is an example of what premiere craftsmanship with high-quality precious gemstones and diamonds
Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Sapphire, White Gold, 18k Gold

Maubossin 4.24 Carat Diamond Ring
By Mauboussin
Located in London, GB
. Colour: J, Clarity: VS2 Total Trilliant Diamond Weight: Approx. 2.00ct (0.50ct each) Total Baguette
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Emilio Jewelry GIA Certified 2 Carat Fancy Intense Green Diamond Ring
By Emilio!
Located in New York, NY
with two colorless trilliant diamonds. Please inquire for a video. . If you have another design in mind
Category

21st Century and Contemporary Three-Stone Rings

Materials

Blue Diamond, Pink Diamond

Trilliant Cut Diamond Drop Earrings
Located in Mayfair, London, London
single trilliant cut diamond weighing approximately 1.05ct, colour G and VS in clarity set within a
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, 18k Gold, White Gold

Trilliant Citrine Diamond Gold Drop Earrings
By Valentin Magro
Located in New York, NY
Trilliant Shape and Pear Shape Citrine Dangling Earrings with Diamonds 4 Citrines total weight
Category

Early 2000s Dangle Earrings

Materials

Citrine, Diamond, 18k Gold, Yellow Gold

5.01ct GIA Radiant Cut Fancy Light Yellow Platinum Ring with 0.85ctw Diamonds
Located in Aventura, FL
trilliant Diamonds G Color and other is VS1 clarity. This ring will be perfect for your special one, This
Category

21st Century and Contemporary American Modernist Engagement Rings

Materials

Diamond, Platinum

3.07 Carat Trilliant Cut Diamonds Gold Earrings
Located in Mayfair, London, London
single trilliant cut diamond weighing approximately 1.05ct, colour G and VS in clarity set within a
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, 18k Gold, White Gold

Blue Trilliant Sapphire and Diamond Wrapping Cocktail Ring
Located in Scottsdale, AZ
Designer: custom design Material: 14k white gold Sapphire: blue trilliant cut sapphire 4.19 carat
Category

2010s American Modern More Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Emilio Jewelry 3.72 Carat Certified Vivid Green Emerald Diamond Ring
By Emilio!
Located in New York, NY
trilliant diamonds set on the side weighing approx .56ct color E/Vvs1 Ring dimensions: 9.50mm long Set in
Category

21st Century and Contemporary Three-Stone Rings

Materials

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

Art Deco Trilliant-Cut Ruby and Diamond Ring in Platinum
Located in New York, NY
An Art Deco ring comprised of facing triangular-cut ruby and diamond and flanked by small opposed
Category

Vintage 1920s Art Deco More Rings

Materials

Diamond, Ruby, Platinum

Oscar Heyman White Diamond Ballerina 1.82 Carat Trilliant Cut Engagement Ring
By Oscar Heyman
Located in New York, NY
Of ballerina design by Oscar Heyman featuring a 1.82 carat trilliant cut shape diamond, with a halo
Category

21st Century and Contemporary American Modern Bridal Rings

Materials

White Diamond

14k Yellow Gold 1.70ct Trilliant Fiery Diamond Wide Ribbed Band Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Diamond - Trilliant Cut - Prong Set - G Color - I1 Clarity
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Yellow Gold

9.35 Carats Emerald Cut No Heat Sapphire Trilliant Cut Diamond Platinum Ring
Located in Philadelphia, PA
. Natural Thai in origin with no indications of heat treatment - prong set in basket. Flanked by trilliant
Category

Vintage 1980s Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Modern 2.84 Carat Gold Natural Trilliant Citrine and Diamond Cocktail Stone Ring
Located in Los Angeles, CA
Modern 2.84 Carat 14k Gold Natural Trilliant Citrine (2.40 carat) & Natural Diamond (0.44 carat
Category

2010s Unknown Modern Cocktail Rings

Materials

Citrine, Diamond, 14k Gold

1.90 Carat Natural Vivid Pink Trilliant Sapphire Diamonds Stud Earrings 14 Karat
Located in New York, NY
1.40ct. Natural pink sapphires & .50ct. Diamond stud earrings. modern deco Sapphires: Trilliant
Category

2010s American Stud Earrings

Materials

Diamond, Pink Sapphire, 14k Gold, White Gold

Vintage 4.5 Carat Emerald Trilliant Cut Diamond Three-Stone Gold Engagement Ring
Located in Lisbon, PT
Vintage certified 4.50-carat emerald and 1.40-carat trilliant-cut diamond three-stone engagement
Category

1990s Unknown Modern Engagement Rings

Materials

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

GIA Certified 3.00 Carat E, VS1 Trilliant Center in Diamond Halo Platinum Ring
Located in Honolulu, HI
Platinum Diamond halo ring with a beautiful GIA certified 3.00 ct. Trilliant cut diamond, E color
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

14 Karat Yellow Gold, 0.80 Carat Round Diamond and Trilliant Garnet Fashion Band
Located in Scottsdale, AZ
This is an awesome trilliant cut garnet with 4 princess cut diamonds accentuating the center stone
Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Diamond, Garnet, 14k Gold, Yellow Gold

14 Karat Gold Oval Cut 1.48 Carat Sapphire with Trilliant Cut Diamonds Ring
Located in Scottsdale, AZ
! Featuring two trilliant cut diamonds flanking the center stone! The two diamonds weigh 0.60 carats! Each
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Certified Emerald Trilliant Cut 2.98 ct Diamonds Cocktails Ring in 18 K Gold
Located in London, GB
The remarkably clear depths of this 2.98 carat trilliant cut emerald cocktail ring is simply
Category

Early 2000s British Modern Cocktail Rings

Materials

Emerald, 18k Gold

30.00 Carat Trilliant Cut Swiss Blue Topaz 14 Karat Yellow Gold Pendant
Located in Scottsdale, AZ
Designer: custom design Material: 14k yellow gold Blue Topaz: trilliant cut 30.00 carat swiss blue
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, Topaz, 14k Gold, Yellow Gold

2.82 Carat Trilliant Tanzanite Blue Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Tanzanite, 14k Gold, Yellow Gold

7 Carat Trilliant Cut Watermelon Green Tourmaline Ring in 18K Gold Two Tone
By Gad Co.
Located in Miami, FL
Trilliant Cut Green Watermelon Tourmaline and Round Diamond Side Stone Ring, a resplendent
Category

21st Century and Contemporary North American Art Deco Cocktail Rings

Materials

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

Vivid Diamonds GIA Certified 2.02 Carat Radiant Cut Engagement Ring
By Vivid Diamonds
Located in Miami, FL
certified radiant cut diamond weighing 2.02 carats F color, SI1 clarity, adorned with two trilliant cut
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Vivid Diamonds GIA Certified 2.02 Carat Radiant Cut Engagement Ring
By Vivid Diamonds
Located in Miami, FL
certified radiant cut diamond weighing 2.02 carats F color, SI1 clarity, adorned with two trilliant cut
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Platinum

1.40 Carat Diamond Engagement Ring
Located in Webster, NY
Brilliant Cut & 4 Trilliant Cut Center Diamonds: 4 Trilliant Cut Diamonds weighing approximately .52CTW
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold

Platinum Star Sapphire Diamond Ring
Located in New York, NY
x 11 mm, set with one trilliant cut diamond on each side weighing approx. 0.12 cts each, size 6.25
Category

Vintage 1950s More Rings

Materials

Diamond, Star Sapphire, Platinum

Aquamarine and Diamond Ring Cocktail Ring
Located in Webster, NY
Diamond accented Trilliant Cut Aquamarine ring crafted in 14k yellow gold. Gemstone: Aquamarine
Category

21st Century and Contemporary Fashion Rings

Materials

Aquamarine, Diamond, 14k Gold

4.34 Carat Emerald Diamond Platinum Ring
Located in Miami, FL
Platinum lady's ring featuring a pear shape emerald weighing 4.34cts flanked by two trilliant cut
Category

21st Century and Contemporary American Three-Stone Rings

Materials

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

8 Carat Sapphire Diamond Platinum Ring
Located in Miami, FL
weighing 8.36cts flanked by 2 trilliant cut diamonds weighing approximately 1.20cts G color and VS clarity
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, White Diamond, Blue Sapphire, Platinum

5.73 Carat Wide Diamond Encrusted Bridal Ring Band
Located in Beverly Hills, CA
This striking wide 5.73-carat total weight Trilliant Cut Bridal Diamond Band Ring is a statement of
Category

2010s Unknown Contemporary Bridal Rings

Materials

Diamond, White Diamond, Platinum

Emerald-Cut Diamond Ring, 13.16 Carat
Located in New Orleans, LA
sparkle. Two trilliant-cut diamonds totaling 2.92 carats rest on each side of the center stone. Set in
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

Messika Rose Gold Diamond Théa Earrings
By Messika
Located in Mayfair, London, London
up of 2 trilliant cut diamonds in the centre, complemented by a halo of round brilliant cut diamonds
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, 18k Gold, Rose Gold

VAN CLEEF ARPELS Emerald Cut Diamond Ring.
By Van Cleef Arpels
Located in New York, NY
diamond weighing 7 carats, flanked on either side by a trilliant-shaped diamond. The center diamond is
Category

Vintage 1980s French Engagement Rings

Materials

Diamond, Platinum

Platinum 1.24 Carat Three Stone Diamond Engagment Ring
Located in Webster, NY
color and VS2 clarity. It is accented by two Trilliant Cut Diamonds. The total diamond weight is
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Colombian Emerald Diamond gold Cocktail Ring
Located in New Orleans, LA
-carat treasure is perfectly complemented by two trilliant cut white diamonds totaling 2.49 carats. All
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

2.82 Carat GIA Cert Oval Diamond Platinum Engagement Ring
Located in Miami, FL
trilliant cut diamonds weighing 1.04ct, E color, VS clarity. Ring size: 6 (can be sized up or down free
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

1960s Sapphire Diamond Platinum Link Bracelet
Located in New York, NY
estimated 6.98 cts., and 4 trilliant shape diamonds weighing an estimated 1.60 cts., total. The five square
Category

Vintage 1960s Art Deco Link Bracelets

Materials

Blue Sapphire, White Diamond, Platinum

Colombian Emerald Diamond Gold Ring
Located in New Orleans, LA
-carat treasure is perfectly complemented by two trilliant cut white diamonds totaling 2.49 carats. All
Category

20th Century American Contemporary Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Gold

Contemporary 1.25 Carats Sapphire Diamond Three Stone Ring
Located in Philadelphia, PA
medium light royal blue color Basket set and flanked by two trilliant cut diamonds Weighing in total
Category

Late 20th Century Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Two Tone Sapphire and Diamond Ring
Located in NEW ORLEANS, LA
accentuated by rose cut diamond and trilliant cut sapphire accents. The ring is size 5 and weighs 4.3 grams.
Category

20th Century Unknown Art Deco Engagement Rings

Materials

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

Platinum 1920 s Rectangular Open Work Diamond Brooch
Located in New York, NY
Of rectangular openwork design, set with a sugarloaf cabochon onyx and 1 significant size trilliant
Category

20th Century Unknown Modern Brooches

Materials

Diamond, Platinum

Trillion Cut Diamond Drop Earrings 3.07 Carat
Located in Mayfair, London, London
single trilliant cut diamond weighing approximately 1.05ct, colour G and VS in clarity set within a
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, 18k Gold, White Gold

Theo Fennell Aquamarine Diamond Etruscan Style Ring
By Theo Fennell
Located in London, England
this cocktail ring has a centre cushion cut aquamarine of approximately 3.27ct flanked by two trilliant
Category

Early 2000s British Fashion Rings

Materials

Aquamarine, Diamond, 18k Gold

Three-Stone Sapphire Diamond Gold Engagement Ring
Located in Napoli, NA
carat trilliant-cut diamonds H color VS1 clarity. Set in 18k gold. This beautiful ring dates to the 1950
Category

Mid-20th Century Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold

2.02 Carats GIA Cert Three Stone Diamond Platinum Ring
Located in Webster, NY
This platinum ring features a GIA Certified 1.23CT Princess Cut Diamond, with two Trilliant Cut
Category

Early 2000s Engagement Rings

Materials

Diamond, Platinum

GIA Certified 5.15 Carat Natural Fancy Diamond White Gold Ring
Located in Lucerne, CH
Diamond i1, paired with two trilliant-cut diamonds (J-K colour and si clarity, totalling 0.90 carats). Set
Category

2010s Italian Contemporary Three-Stone Rings

Materials

White Diamond, Brown Diamond, 18k Gold

Emerald Cut Sapphire Diamond Gold Engagement Ring
Located in Stamford, CT
Bright blue Emerald cut Sapphire and trilliant cut diamonds in a white gold setting. GIA certified
Category

Vintage 1960s Unknown Engagement Rings

Materials

Blue Sapphire, Diamond, Sapphire, 14k Gold, White Gold

Platinum and 18 Karat White Gold South Sea Pearl and Diamond Ring
Located in Palm Beach, FL
brilliant trilliant-cut diamonds totaling approximately 2.80 carats, graded approximately F–G color and VS
Category

20th Century Cocktail Rings

Materials

Diamond, South Sea Pearl, White Gold, Platinum

1.16 Carat Marquise Diamond and Platinum Engagement Ring
Located in Chevy Chase, MD
A beautiful 1.16 carat marquise and trilliant cut diamond engagement ring. The center marquise is
Category

Late 20th Century American Retro Engagement Rings

Materials

Diamond, Platinum

18 Karat White Gold Diamond and Emerald Three-Stone Ring
Located in Webster, NY
Weight: .44CTW Diamond Cut: 2 Trilliant Cut Diamonds Color: Average H-J Clarity: Average SI Metal: 18K
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

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

Cartier No-Heat Burma Sapphire Diamond Ring
By Cartier
Located in Litchfield, CT
clarity trilliant-cut diamonds. HALLMARKS: Cartier, Plat, and 80059 CERTIFICATES: AGL certificate
Category

Vintage 1960s American Engagement Rings

Materials

Blue Sapphire, White Diamond, Platinum

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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.