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5.19 Carat Sri Lanka Sapphire GIA Certified Unheated Ceylon Ring Octagonal Cut
Located in Hong Kong, Hong Kong
Or Cut Diamond: 2 Trilliant Diamonds tot weight: 0.36ct G/SI, HRD certificate Average Color/clarity
Category

21st Century and Contemporary Hong Kong Cluster Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Triple Row Fancy Diamond Ring Mix Shape 2.94 CT G / SI1-VS In 18K Yellow Gold
Located in New York, NY
trilliant diamonds with a total carat of 2.94. These diamonds are color G and clarity SI2 getting as a
Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

Trilliant Cut Morganite Diamond Rose Gold Cocktail Ring
By Tears Undressed
Located in Tilburg, NL
Brand new, one-of-a-kind, pink Morganite Diamond cocktail ring. The rose gold mounting and
Category

21st Century and Contemporary Dutch Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Morganite, Gold, 14k Gold, Rose Gold

Burmese Star Sapphire Ring With Trilliant-Cut Diamonds In Platinum
Located in New York, NY
A beautiful, oval cabochon, no heat, Burmese star sapphire ring with trilliant-cut diamond
Category

20th Century Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

28.64 Carat Trilliant Cut Rubellite Tourmaline Diamond Gold Dress Ring
Located in Malvern, Victoria
x 18.1mm trilliant cut Tourmaline of known weight 28.64ct Ring Size L
Category

21st Century and Contemporary Australian Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, White Gold

14 Karat Trilliant Tanzanite 16 Carat Baguette Diamond Pendant Necklace Yellow
Located in Boca Raton, FL
This is a magnificent 14K Yellow Gold Diamond and Tanzanite Necklace designed with a Trilliant Cut
Category

21st Century and Contemporary Unknown Modern Pendant Necklaces

Materials

Diamond, Tanzanite, 14k Gold

Tiffany Platinum Ring Mounting With 2.53ct Radiant Cut Diamond and Trilliants
By Tiffany Co.
Located in Chicago, IL
G color, VVS2 clarity, prong set with two Trilliant cut diamonds .63cts, G-H color Finger size
Category

Early 2000s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Pear Shaped Diamond Ring 0.50 Carat with Two Trilliant Cut Diamonds, 0.40 Carat
Located in Yorkshire, West Yorkshire
A unique pear shaped diamond ring flanked to each side with a trilliant cut diamond created to a
Category

21st Century and Contemporary British Contemporary Three-Stone Rings

Materials

Diamond, Platinum

Princess Cut Diamond Studs and Trilliant Cut Jackets in 18 Karat WG
By Lester Lampert
Located in Chicago, IL
Princess Cut Diamond Studs and Trilliant Cut Jackets in 18kt WG - Diamond stud earrings. 2 matched
Category

2010s American Modern Stud Earrings

Materials

Diamond, 18k Gold

Pre-Owned Opal and Trilliant Cut Diamond Pendant, 18ct Gold Sheffield 2003
Located in Yorkshire, West Yorkshire
trilliant cut diamond 4.00mm x 4.00mm x 22.23mm deep. The opal is calculated to weigh 6.83ct.  The diamond
Category

2010s British Contemporary Pendant Necklaces

Materials

Diamond, Opal, Gold

GIA Cert Radiant Cut Diamond, F Color, SI1 Clarity Trilliants in Platinum Ring
By Trabert Hoeffer Mauboussin
Located in Chicago, IL
Platinum ring with two Trilliant cut diamonds weighing 1.40cts, G color, SI1 clarity, set in center
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

18 Carat White Gold Light Blue Trilliant Cut Aquamarine and Diamond Drop Pendant
Located in Hamilton, AU
brilliant cut diamond. We have named her The Isla Pendant. Her lovely sparkle imbues the wearer with a touch
Category

21st Century and Contemporary Unknown Modern Pendant Necklaces

Materials

Aquamarine, Diamond, Gold, 18k Gold, White Gold

2.01ct Heart Diamond Pink Diamond Necklace
Located in Chestnut Hill, MA
carats having a color and clarity of E/SI1 with GIA certificate and 1 trilliant cut natural pink diamond
Category

21st Century and Contemporary Unknown Drop Necklaces

Materials

Diamond, 18k Gold

Lester Lampert Diamond Cluster Bracelet in 18Kt RG with over 30Ct of Diamonds
By Lester Lampert
Located in Chicago, IL
cut diamonds = 28.18tw (Trilliants, Ovals, Emeralds, Baguettes, Princess, Marquises, Pears, Trapezoids
Category

2010s Italian Contemporary Modern Bracelets

Materials

Diamond

GIA Certified Fancy Light Yellow 3.01 ct Diamond and 0.47 ct White Diamond Ring
By HY JEWELLERY
Located in Knightsbridge, GB
weight: 3.01 ct [ 1 diamond ] Color: Fancy light yellow Clarity: VS1 Total trilliant cut white diamond
Category

2010s British Modern Engagement Rings

Materials

White Diamond, Yellow Diamond, 18k Gold

Fine Jadeite Jade Diamond Platinum Ring
Located in La Jolla, CA
Platinum with 2 Trilliant shaped diamonds weighing 0.82 ct. The Jade has been certified natural with no
Category

21st Century and Contemporary Unknown Three-Stone Rings

Materials

Diamond, Jade, White Diamond, Platinum

Baroque Pearl and Diamond Earrings
By GILIN
Located in Central, HK
Antique style baroque pearl earrings, accompanied by a total of 1.43 carat trilliant rose-cut
Category

21st Century and Contemporary Drop Earrings

Materials

White Diamond, Pearl, 18k Gold

6.41 Carat Fancy Yellow Diamond Ring
Located in Greenwich, CT
, flanked by trilliant-cut colorless diamond shoulders weighing approximately 1.60 total carats (E-F color
Category

21st Century and Contemporary American Engagement Rings

Materials

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

5.03 Fancy Intense Yellow Diamond Ring
Located in Chestnut Hill, MA
intense yellow/VS1 GIA Cert #11394525) flanked by 2 trilliant cut diamonds having a total weight of 1.10
Category

21st Century and Contemporary Unknown Three-Stone Rings

Materials

Diamond, Platinum, 18k Gold

3.93 Carat Emerald-Cut Diamond Engagement Ring
Located in Greenwich, CT
flanked by trilliant-cut diamond shoulders, mounted in polished platinum. Two trilliant-cut diamonds
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Hirsh Trio Sapphire and Diamond Ring
Located in London, GB
A beautiful royal blue emerald cut sapphire set between two trilliant cut diamonds in the unique
Category

2010s British Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

5.40 Carat Sapphire and Diamond Ring
By Garen Azatyan
Located in Little Neck, NY
Ladies beautiful sapphire and diamond ring. Handcrafted in 14k white gold. The center contains oval
Category

2010s American Three-Stone Rings

Materials

Diamond, Sapphire, 14k Gold

Art Deco Diamond and Emerald Ring
Located in Essex, GB
trilliant cuts. Colour – The centre diamond is F, with F to G diamonds in the surround. Clarity – The
Category

Mid-20th Century French Cluster Rings

Materials

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

5.04 Carat Radiant-Cut Diamond Ring D/VVS2
Located in Greenwich, CT
carats flanked by a pair of colorless trilliant-cut diamond shoulders weighing approximately 1.14 total
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

2.47 Carat Emerald Diamond Gold Platinum Three Stone Ring
By Shreve, Crump Low
Located in Chestnut Hill, MA
weighing 2.47 carats flanked by two trilliant cut diamonds having a total weight of 1.02 carats.
Category

21st Century and Contemporary Unknown Contemporary Three-Stone Rings

Materials

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

Baroque Pearl and Rose-Cut Diamond Drop Necklace
By GILIN
Located in Central, HK
Beautiful antique style 19.30ct baroque pearl drop necklace, accompanied by 0.50ct trilliant rose
Category

21st Century and Contemporary Drop Necklaces

Materials

White Diamond, Pearl, 18k Gold

Slanted Pear-Shaped Opal and Diamond Earrings
By Alexandra Mor
Located in New York, NY
A pair of pear-shape Opal earrings featuring Round, Marquise, Trilliant, and Oval-shape Diamonds
Category

21st Century and Contemporary American Contemporary Lever-Back Earrings

Materials

Diamond, Opal, 18k Gold

10.01 Carat Pink Sapphire Diamond Platinum Three Stone Ring
By Shreve, Crump Low
Located in Chestnut Hill, MA
carats and flanked by 2 trilliant cut diamonds having a total weight of 1.94 carats.
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Pink Sapphire, Sapphire, White Diamond, Platinum

GIA Certified Marquise Cut Diamond Ring, 3.73 Carat
By HY JEWELLERY
Located in Knightsbridge, GB
diamond ] Color: E Clarity: VS2 Total trilliant cut diamond weight: 0.38 ct [ 2 diamonds ] Color: F
Category

2010s British Modern Engagement Rings

Materials

White Diamond, 18k Gold

Spectacular 3.27ct Fancy Yellow Internally Flawless Diamond Ring
By David Company
Located in Chestnut Hill, MA
trilliant cut diamonds having a total weight of approximately.85 carats. Ring can be sized.
Category

21st Century and Contemporary Unknown Three-Stone Rings

Materials

Diamond, Platinum, 18k Gold

GIA Certified 8.09 Carat Diamond and Platinum Three-Stone Ring
Located in London, GB
A GIA certified 8.09cts diamond and platinum three-stone ring. The central rectangular-cut diamond
Category

1990s Unknown Three-Stone Rings

Materials

Diamond, Platinum

Emerald Diamond Engagement Ring Platinum 18k Yellow Gold
Located in New York, NY
Emerald, Basket set and flanked by 2 trilliant cut diamonds. The emerald is vivid and transparent with
Category

Late 20th Century American Three-Stone Rings

Materials

Diamond, Emerald, Yellow Gold, Platinum

Seed of Hope 22.88 Carat Boulder Opal Diamond Pendant
Located in MAIN BEACH, QLD
White Diamonds (Princess & Trilliant Cut) Setting: 18K solid Gold & Platinum Chain: Includes a 32.5g
Category

2010s Australian Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Platinum

Dynamite Enamel Shattered 18 Karat White Gold and White Diamond Bracelet
By Stephen Webster
Located in London, GB
Dynamite Enamel Shattered Bracelet. Set in 18 karat white gold, with tapered baguette cut and trilliant cut
Category

2010s British Modern Bracelets

Materials

White Diamond, 18k Gold, White Gold

5.07 Carat No Heated Blue Sapphire Cocktail Ring Set Trillion Cut White Diamond
By Héritage Jewelry
Located in Istanbul, TR
called “trilliant” or “trillian”) weighing 0.65 Carat and surround by Round Diamonds weighing 0.30 Carat
Category

21st Century and Contemporary French Contemporary Cocktail Rings

Materials

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

18 Karat White Gold Sapphire and Diamond Cocktail Ring
Located in New York, NY
flanked by 2 trilliant brilliant cut diamonds totaling approximately 1.00 carat near colorless range SI-VS
Category

2010s American Modern Cocktail Rings

Cushion and Heart Floral Earring, 7.30ct
Located in Mumbai, IN
yellow diamonds & flanked with rose cut white trilliant cut diamonds ,gives the face a different
Category

2010s Indian Modern Stud Earrings

Materials

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

Tiffany Co. Emerald Ring
By Tiffany Co.
Located in Atlanta, GA
Platinum Tiffany & Co ring having a 3.53 carat oval emerald and two trilliant cut diamonds weighing
Category

Unknown Solitaire Rings

Materials

Emerald, Diamond, Platinum

Trilliant Diamond Single Stone Pendant
By Donald Edge
Located in London, London
The trilliant cut diamond weighs approximately a third of a carat and is of H colour and VS2
Category

2010s More Necklaces

Materials

Diamond, 18k Gold

Platinum Ring with Radiant Cut Diamond and Diamond Trilliants
By Trabert Hoeffer
Located in Chicago, IL
clarity, and two Trilliant cut diamonds weighing .70cts total, H-I color, VS2-SI1 clarity Finger size 6
Category

Early 2000s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Pair of 14ct Rose Gold Trilliant Cut Aquamarines and Diamonds Stud Earrings
Located in Sydney, NSW
Pair of 14ct rose gold trilliant cut aquamarines and diamonds stud earrings. Aquamarine weights
Category

2010s Australian Contemporary Stud Earrings

Materials

Aquamarine, Diamond, 14k Gold, Rose Gold

Yellow Gold 0.76 Carat Diamond Trillion Cut Necklace
Located in Birmingham, GB
A sparkling trilliant cut diamond with a trefoil of round brilliant cut diamonds on either side
Category

Late 20th Century Unknown Contemporary More Necklaces

Materials

Diamond

3 Carat Radiant-Cut GIA Certified Diamond Platinum Engagement Ring
Located in Metairie, LA
GIA Certified Perfect “D” Color 3ct Radiant-Cut Platinum Diamond Engagement Ring One of the
Category

2010s American Engagement 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.