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Peter Suchy Designs Cushion Cut Cornflower Blue Sapphire Diamond Platinum Ring
By Peter Suchy
Located in Stamford, CT
trilliant cut diamonds, approx. total weight .68cts, F, VS2 Platinum Tested and stamped: Platinum 5.6
Category

21st Century and Contemporary Engagement Rings

Materials

Blue Sapphire, Diamond, Platinum

Vintage GIA 8.73 Carat Cabochon Star Sapphire Diamond Platinum Ring
Located in Beverly Hills, CA
) origin and has no indications of heat treatment. Accented by two trilliant cut diamonds with a total
Category

Vintage 1970s Unknown Three-Stone Rings

Materials

Diamond, Star Sapphire, Platinum

1980 s Vintage 8.91 Carats No Heat Yellow Sapphire Diamond Platinum Ring GIA
Located in Philadelphia, PA
medium light yellow color and no indications of heat - eye clean Flanked by two trilliant cut diamonds
Category

Vintage 1980s Contemporary Three-Stone Rings

Materials

Sapphire, Yellow Sapphire, Diamond, White Diamond, Platinum

GIA Certified 1.60 Carat Emerald Diamond Gold Three-Stone Engagement Ring
Located in Stamford, CT
1960's Emerald step cut Emerald and trilliant cut diamond, engagement ring. GIA certified center
Category

Mid-20th Century Engagement Rings

Materials

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

Vintage 6.16 Carats Emerald Diamond 18 Karat Two-Tone Gemstone Ring AGL
Located in Philadelphia, PA
in color - minor and traditional clarity enhancement (F1) Flanked by trilliant cut diamonds weighing
Category

Vintage 1980s Contemporary Cocktail Rings

Materials

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

Emilio Jewelry Certified 15.96 Carat Colombian Vivid Green Emerald Diamond Ring
By Emilio!
Located in New York, NY
overall an excellent stunner. Set with 2 colorless trilliant cut diamonds and small rounds .91ct E/Vvs1 as
Category

21st Century and Contemporary Three-Stone Rings

Materials

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

A Gorgeous Sapphire Diamond Three Stone Ring Set in Platinum.
Located in New York, NY
A platinum and 18 karat yellow gold sapphire and diamond ring. The center faceted oval sapphire
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Sapphire, Platinum, 18k Gold

5.59Ct RadiantCut Platinum Fancy Vivid Yellow Threestone Diamond Engagement Ring
Located in New York, NY
This is a beautiful square radiant cut diamond engagement ring mounted in a handmade setting. The
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Art Deco 2.00 CTW Transitional Cut Diamond Platinum Vintage Engagement Ring GIA
Located in Philadelphia, PA
Centering a transitional cut diamond weighing 1.62 carats - F color with VS1 Bead set in a square
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

1.80ct Oval Emerald with Triliiant Diamond 18k White Gold Pendant Necklace
Located in BEVERLY HILLS, CA
carat oval emerald, apx F2. 1 trilliant cut diamond, 0.08 carats. Approximately G/H color and SI clarity
Category

21st Century and Contemporary Contemporary Pendant Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

Mid-Century 6.70 Carats Colombian Emerald Diamond 14 Karat White Gold Ring GIA
Located in Philadelphia, PA
(F1) Basket set and flanked by two trilliant cut diamonds Weighing in total approximately 0.70 carat
Category

Vintage 1950s Retro Cocktail Rings

Materials

Diamond, White Diamond, Emerald, Gold, 14k Gold, White Gold

Yellow Sapphire Diamond 3-Stone Ring 14K Yellow Gold, Nontraditional Engagement
Located in Santa Monica, CA
is flanked by two trilliant-cut diamonds (0.53cttw), slightly mismatched for a unique, organic
Category

2010s American Modern Three-Stone Rings

Materials

Diamond, Yellow Sapphire, 14k Gold, Yellow Gold

1.31 Carat GIA Round Brilliant Cut Diamond Engagement Ring by Tiffany Co.
By Tiffany Co.
Located in Los Angeles, CA
Round Brilliant Cut Diamond, GIA certified F color & VVS2 clarity. Flanked by 2 Trilliant Cut diamonds
Category

1990s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Dorfman 3.40 Carat Burma No-Heat Sapphire Diamond Ring GIA Certified
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 Cocktail Rings

Materials

White Diamond, Blue Sapphire, 18k Gold, Platinum

3.02 CT GIA Diamond Ring in Platinum and 18 kt White Gold
Located in Palm Desert, CA
, Color: J, Clarity: SI-1. On each side, and set in 18 karat white gold, are two Trilliant Cut Diamonds
Category

2010s American Engagement Rings

Materials

Diamond, White Gold, Platinum

Elegant 1.32ct Diamonds 3-Stone Ring in 18k White Gold - GIA Certified
Located in רמת גן, IL
exquisite trilliant-cut diamonds totaling 0.32 carats, this ring dazzles with a total carat weight of 1.32
Category

2010s Israeli Three-Stone Rings

Materials

Diamond, 18k Gold, White Gold

18 Karat Gold Baguette Semi Mount Wedding Ring with 2.31 Carat of Diamonds
By Gregory Mikaelian Sons, Inc.
Located in Los Angeles, CA
Diamond Specifications Main Stone: Additional Stones: Diamonds Shape: Baguette & Trilliant
Category

21st Century and Contemporary American Modern Wedding Rings

Materials

Diamond, 18k Gold

4 Carat Radiant Cut Diamond Fancy Yellow GIA Three-Stone Engagement Ring
Located in New York, NY
) trilliant cut diamonds of 1.08 cttw this ring feels and looks beyond important while keeping it traditional
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum, 18k Gold

6.95 Ct Oval Cut Fancy Yellow Three Stone Diamond Engagement Ring
Located in New York, NY
a yellow gold setting, accented with two trilliant cut diamonds as two side diamonds. We love how
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

4 Carat Radiant Cut Diamond Fancy Yellow GIA Three Stone Engagement Ring
Located in New York, NY
This is a beautiful three-stone diamond engagement ring crafted in Platinum set with a GIA
Category

20th Century American Modern Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Colombian Square Emerald Diamond Ring
Located in New Orleans, LA
of trilliant-cut white diamonds. The ring in which these elegant jewels reside is crafted of platinum
Category

Colombian Three-Stone Rings

Natural 3.76 Carat Colombian Emerald with Diamond Side Stone 3-Stones Ring
By Gad Co.
Located in Miami, FL
Natural 3.76 Carat Colombian Emerald with Trilliant Cut Diamond Side Stone 3-Stone Ring in 18K Gold
Category

2010s Colombian Contemporary Three-Stone Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

1900 Old European Cut Diamond Trillion Cut Two Color Gold Accent Pendant
Located in Stamford, CT
with raised crown and small table. Set in the four corners with Art Deco style trilliant cut diamonds
Category

Early 20th Century Necklace Enhancers

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

1.91 Carat Yellow Diamond Cushion Three Stone Ring 18K Yellow Gold *1 of a Kind*
Located in New York, NY
This Yellow Diamond Cushion Cut *Three Stone Ring* accented by 2 Yellow Trilliants on each side is
Category

21st Century and Contemporary Three-Stone Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold

Tiffany Co. 8.61 CTW Orange Sapphire Diamond 18 Karat Gold Platinum Ring
By Tiffany Co.
Located in Philadelphia, PA
trilliant cut diamonds weighing approximately 0.95 carat total Completed by subtle knife-edge shank Stamped
Category

1990s Engagement Rings

Materials

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

Tiffany Co. 8.61 CTW Orange Sapphire Diamond 18 Karat Gold Platinum Ring
By Tiffany Co.
Located in Philadelphia, PA
trilliant cut diamonds weighing approximately 0.95 carat total Completed by subtle knife-edge shank Stamped
Category

1990s Engagement Rings

Materials

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

Mid-Century 2.07 CTW No Heat Ceylon Sapphire Diamond Three Stone Ring GIA
Located in Philadelphia, PA
trilliant cut diamonds Weighing 0.30 carat total J in color with SI1 clarity - prong set in cathedral
Category

Vintage 1950s Three-Stone Rings

Materials

Diamond, Blue Sapphire, Platinum

Gia Certified 18Kt Gold Ring With 3.86 Cts Colombian Muzo Emerald And Diamonds
Located in Miami, FL
Gorgeous emerald and diamonds ring, Gia Certified. A modern three stones setting ring, crafted in
Category

Early 2000s American Modern Three-Stone Rings

Materials

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

Modernist 2.84 Ctw Fancy Diamond 18 Karat Two-Tone Gold Geometric Inlay Ring
Located in Philadelphia, PA
Featuring baguette, trilliant, and trapezoid cut diamonds flush set in recessed white gold panel
Category

Vintage 1980s Modernist Signet Rings

Materials

Diamond, Gold, 18k Gold

GIA Certified 8.32 Carat Emerald Diamond Three Stone White Gold Ring
Located in Los Angeles, CA
green color, of Zambian origin. DIAMONDS: two trilliant-cut diamonds totaling approximately 1.50
Category

1990s Contemporary Three-Stone Rings

Materials

Diamond, Emerald, 14k Gold, White Gold

10.50 Carat Emerald Cut Blue Sapphire and Trillion Diamond Cocktail Ring in Gold
Located in Chicago, IL
trilliant cut diamonds that total 2.30 carats. This ring is crafted in striking 18 Karat white gold and is
Category

2010s American Contemporary Cocktail Rings

Materials

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

Tanzanite and Diamond Three Stone Engagement Ring in 18 Karat White Gold
Located in London, GB
carats, mounted into a polished rubover setting and framed either side by trilliant cut diamonds in
Category

Early 2000s British Modern Three-Stone Rings

Materials

Diamond, Tanzanite, Gold, 18k Gold, White Gold

GIA Certified Sapphire and Diamond Trilogy Ring Set in 18k White Gold
Located in London, England
matched trilliant cut diamonds. The diamond settings then lead to a solid 2.5-millimetre gold band. The
Category

2010s British Modern Three-Stone Rings

Materials

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

Pair of Gold, Diamond and Tourmaline Earrings
Located in New York, NY
5x4mm oval light orange and a 7mm trilliant dark green. Four accent diamonds, four small round pink
Category

21st Century and Contemporary American Clip-on Earrings

1980 s 2.71 CTW Sapphire Diamond 14 Karat Two-Tone Gold Three Stone Ring
Located in Philadelphia, PA
color and prong set in white gold basket Flanked by trilliant cut diamonds prong set in white gold
Category

Vintage 1980s Three-Stone Rings

Materials

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

Vivid Black Opal Cabochon Diamond Platinum Gemstone Ring
Located in Philadelphia, PA
cathedral shoulders Flush set with trilliant cut diamonds weighing in total approximately 0.25 carat - H/I
Category

21st Century and Contemporary Contemporary Three-Stone Rings

Art Deco Cabochon Sapphire and Diamond Three Stone Ring
Located in London, GB
Deco ring features a cabochon sapphire and two trilliant cut diamonds. Condition: Used (Excellent
Category

20th Century Engagement Rings

Materials

Platinum

2.25 Carat Ruby and Diamond Ring 18 Karat Yellow Gold
Located in Bay Harbor Islands, FL
trilliant cut diamonds with an estimated total weight of .45 carat set in 18 karat yellow gold. Ring Size:5
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Ruby, 18k Gold, Yellow Gold

Asprey Natural Royal Blue Sapphire Diamond Ring Platinum 5.54 Carat
By Asprey International Limited
Located in London, England
-cut diamonds. The central collet is flanked by a claw-set trilliant-cut diamond to each side
Category

21st Century and Contemporary British Contemporary Engagement Rings

Materials

Sapphire, Platinum

Art Deco 8.35 Carat Sapphire and Diamond Ring, circa 1920s
Located in London, GB
trilliant cut diamonds. The design is art deco, dating the ring to the 1920s. Each of the diamonds weighs
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Sapphire, Platinum

Santa Maria Aquamarine Ring
By Pampillonia
Located in Bethesda, MD
) trilliant cut diamond weighing 1.65 carats.
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Aquamarine, Diamond, Platinum

1.95 Carat Emerald Three-Stone Cocktail Ring
Located in Coral Gables, FL
Center Stone Is Accented By Two Trilliant Cut Diamonds Of VS Clarity & G Color Totaling 0.46 Carats
Category

2010s American Contemporary Three-Stone Rings

Materials

Diamond, Emerald, Platinum

10 Carat No Heat Burma Sapphire
By Pampillonia
Located in Bethesda, MD
treatment. From the master rings makers of Pampillonia Jewelers the sapphire is flanked by two trilliant
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

David Webb Platinum 18K Yellow Gold Double Head Lion Ring
By David Webb
Located in New York, NY
- **Detailing**: White Enamel - **Gemstones**: - **Diamond**: - **Cut**: Trilliant - **Weight
Category

20th Century American Modern Fashion Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Platinum

Spessartite Garnet Ring, 6.50 Carat
Located in New Orleans, LA
, this striking cushion-shaped jewel is accentuated by a pair of gleaming trilliant-cut white diamonds
Category

21st Century and Contemporary Unknown Modern Cocktail Rings

Materials

White Diamond, Garnet, White Gold

Bvlgari 18K Yellow Gold Blue Sapphire Oval Cut Vintage Ring
By Bulgari
Located in New York, NY
a 4.50 carat (approx.) oval cut blue sapphire flanked by two trilliant cut diamonds.
Category

20th Century Italian Modern Cocktail Rings

Materials

Blue Sapphire, 18k Gold, Yellow Gold

.73 Carat Trilliant Diamond Pendant 14 Karat Weave Chain Raised Shield Deco
Located in New York, NY
.33ct. Center Trilliant diamond pendant. Si-1 Clarity, I-color Brilliant cut Side diamonds
Category

2010s Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Apx 2.30 Carat Rudy with Trilliant Diamond Three Stone Ring 18 Karat White Gold
Located in BEVERLY HILLS, CA
trilliant diamonds, apx 1ct. Approximately H/I color and VS clarity. 3.30ct total gemstone weight, in 18k
Category

2010s American Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Trilliant diamond studs 3.44 -3.14 carat
By Issac Nussbaum
Located in New York, NY
Diamond stud earrings. Say NO to boring typical round diamond studs! Shine your OWN way. Amazing
Category

2010s Modern Stud Earrings

3.08 Carat Natural Vivid Pink Oval Sapphire Trilliant Diamonds Ring 14 Karat
Located in New York, NY
Pink Sapphire & Trilliants 2.20ct. Natural Pink sapphire ring. Vivid pink color Clean, Si-1
Category

2010s American Solitaire Rings

Materials

Diamond, Pink Sapphire, 14k Gold, Yellow Gold

GIA Certified 3.03 Carat Fancy Yellow Diamond Cocktail Ring
Located in Chicago, IL
is natural and so distinct. There are 2 natural fancy yellow trilliant diamonds, totaling 0.75 carats
Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Platinum

8.52ct Diamond Pendant Necklace with Diamonds by the Yard 18 Karat White Gold
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Exquisite triangular rose cut diamond, trilliant diamond, and round brilliant diamonds by the yard
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

16.64 Carat Tanzanite and Diamond Cocktail Ring in 18 Karat White Gold
Located in Chicago, IL
saturation is what you want; its transparency and luster are excellent. Two large trilliant diamonds, F color
Category

2010s American Contemporary Engagement Rings

Materials

White Diamond, Tanzanite, 18k Gold, White Gold

Alexander GIA 5.11 Carat Toi Et Moi White YZ Yellow Diamond Ring 18k Gold
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
, YZ color grade and VVS2 clarity grade, GIA certified. 1.56 carat trilliant diamond, J color grade and
Category

2010s American Modern Cocktail Rings

Materials

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

Peter Suchy GIA Certified Oval 2.05 Carat Ruby Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
This GIA certified 2.05 carat Burma, Myanmar, oval ruby is accented with 2 trilliant cut diamonds
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Ruby, Platinum

Trilliant Cut Diamond Stud Earrings
By MJ Gabel
Located in Webster, NY
Classic pair of diamond stud earrings featuring .38CTW of Trilliant Cut Diamonds. Diamond Cut
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, 14k Gold

Platinum Large Trilliant Cut Diamond Statement Ring
Located in New York, NY
This is a large trilliant cut diamond statement ring that can be worn as an engagement, as an
Category

20th Century American Modern Cocktail Rings

Materials

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.