Skip to main content

Gia 3 Carat Princess Cut Diamond

to
16
102
85
35
20
9
9
4
4
3
3
2
2
2
2
1
1
1
1
2
1
1
1
1
Sort By
GIA 1.28 carats Princess-Cut Diamond Platinum Engagement Ring
Located in Miami, FL
1 genuine princess cut natural diamond vibrant approx 1.01ct, GIA certified I color, VS2 clarity
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA Certified 3 Carat D VS1 Princess Diamond Engagement Ring "Catherine"
Located in New York, NY
creation where classic majesty meets modern design. Taking pride of place is a GIA Certified 3 Carat
Category

2010s American Modern Engagement Rings

Materials

Diamond

GIA Certified 3 Carats Princess Cut Fancy Light Yellow Engagement Ring
Located in Miami, FL
Stone: Diamond Color: Fancy Light Yellow Carat Weight: 3.03cts Clarity: VVS1 Cut: Princess Cut
Category

2010s American Art Deco Engagement Rings

Materials

Yellow Diamond, 18k Gold, Platinum

GIA .99 Carat Princess Cut Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Diamond engagement ring. GIA certified .99ct princess cut diamond set in a platinum three stone
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

1.08 Carat Princess Cut Diamond 3 Stone Engagement Ring
Located in Santa Barbara, CA
carat princess cut diamond, expertly cut to maximize its brilliance and fire. Graded as colorless (F
Category

1990s American Contemporary Engagement Rings

Materials

Diamond, Platinum

14 Karat Gold 1 Carat Princess Cut Diamond Ring, GIA Certified SI2 J
By Rose and Choc
Located in Wallingford, CT
White princess cut diamond sets on 14 karat gold ring. Princess cut diamond GIA certificate Metal
Category

2010s American Modern Engagement Rings

Materials

Diamond, 14k Gold, Gold

Platinum Diamond Solitaire Engagement Ring - Princess Cut .45ct GIA Cathedral
Located in Greensboro, NC
Information Natural Diamond Carat(s): .45ct Cut: Princess Color: E Clarity: VS1 Certified by: GIA Report
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Valina Diamond Halo Ring White Gold, 14 Karat Princess Cut 1.15 Carat GIA
Located in Greensboro, NC
natural diamond accents. The princess cut solitaire has an impressive .70 carat weight and bears the laser
Category

20th Century Unknown Engagement Rings

Materials

Diamond, 14k Gold, White Gold

18 Karat Gold 1 Carat Princess Cut Diamond Ring, GIA Certified SI2 J
Located in Wallingford, CT
White princess cut diamond sets on 18 karat gold ring. Princess cut diamond GIA certificate Metal
Category

2010s American Modern Engagement Rings

Materials

Diamond, Gold, 18k Gold, 14k Gold

Jack Kelége Heritage 3 Carat Princess Cut and Pink Diamond Engagement Ring
By Jack Kelege
Located in Bethesda, MD
From the the Jack Kelége Heratage collection, a 3 carat princess cut diamond surrounded by
Category

2010s American Engagement Rings

Materials

Diamond, Pink Diamond, 18k Gold, Platinum

1.00 Carat Princess Cut Platinum Diamond Engagement Ring
Located in Scottsdale, AZ
Designer: custom design Material: Platinum Center Diamond: 1 princes cut= 1.00ct GIA 15167077
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

White Gold Diamond Halo Engagement Ring - 14k Princess 2.05ctw GIA Sz 6 3/4
Located in Greensboro, NC
Size: 6 3/4 Metal Content: 14k White Gold Stone Information Natural Diamond Carat(s): .70ct Cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Vintage 1/2 Carat Petite Princess Cut Diamond Engagement Ring
Located in Santa Barbara, CA
Year: 1980s Metal: Platinum Diamonds: Carat Weight: 0.45 Cut: Princess Color: H Clarity: SI1 Accent
Category

Vintage 1980s Engagement Rings

Materials

Diamond, Platinum

3 Carat Princess Cut Eternity Band F-G Color VS1 Clarity 14k Gold
Located in Los Angeles, CA
carats. A shimmering spectacle of channel set princess cut plus round cut diamonds are pave set for a
Category

2010s American Modern Band Rings

Materials

Diamond, 14k Gold

3.99 Ctw Princess Cut Three Stone Diamond Platinum Engagement Ring GIA E/SI1
Located in Boca Raton, FL
are GIA certified. The center 3.09 carat princess cut diamond is graded E color and SI1 clarity. The
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Platinum Diamond Solitaire Engagement Ring - 950 Rectangular Princess 1.08ct GIA
Located in Greensboro, NC
Information Natural Diamond Carat(s): 1.08ct Cut: Rectangular Princess Color: J Clarity: VS2 Certified by: GIA
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Platinum 3 Ct Princess Cut Natural Diamond Eternity Band F-G Color VS1 Clarity
Located in Los Angeles, CA
carats. A shimmering spectacle of channel set princess cut plus round cut diamonds are pave set for a
Category

2010s American Modern Band Rings

Materials

Diamond, Platinum

Princess Cut Diamond, Marquise Cut Diamond Unique Ring 18K Yellow Gold
Located in Hong Kong, HK
and distinctive ring. Product Specifications: - 0.60ct Princess Cut Diamond (F/VS2), GIA Certificate
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Yellow Gold

Princess Cut Diamond, Marquise Cut Diamond Unique Ring 18K Yellow Gold
Located in Hong Kong, HK
and distinctive ring. Product Specifications: - 0.60ct Princess Cut Diamond (F/VS2), GIA Certificate
Category

2010s Hong Kong Art Deco Dome Rings

Materials

Diamond, Yellow Gold

18k Gold 3 Ct Princess Cut Natural Diamond Eternity Band F-G Color VS1 Clarity
Located in Los Angeles, CA
carats. A shimmering spectacle of channel set princess cut plus round cut diamonds are pave set for a
Category

2010s American Modern Band Rings

Materials

Diamond, 18k Gold

New Platinum 18k Gold 1.64ct GIA Princess Diamond W/ Square Emerald 3 Stone Ring
Located in Montclair, NJ
crafted in solid platinum and 18k yellow gold. It features a truly gorgeous, GIA certified, princess cut
Category

2010s North American Three-Stone Rings

Materials

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

1.03ct Princess Square Solitaire Diamond Engagement Ring 14k White Gold GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1.03ct Cut - Modified Square Brilliant Color
Category

2010s Engagement Rings

Materials

Diamond, White Gold

Princess Cut and Round Cut Diamond Open Engagement Mixed Cuff Minimalist Ring
Located in Hong Kong, HK
with GIA Certificate) with 0.30ct - 1 Princess Cut High Quality Diamond (F/VS2 with GIA Certificate
Category

2010s Hong Kong Modernist Engagement Rings

Materials

Diamond, 18k Gold

1.03ct Princess Square Solitaire Diamond Engagement Ring 14k White Gold GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1.03ct Cut - Modified Square Brilliant Color
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Gold

0.70ct VS2 Square Princess Diamond Solitaire Ring 14k White Gold Size 5.5 GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 0.70ct Cut - Square Brilliant Color - I Clarity
Category

2010s Engagement Rings

Materials

Diamond, White Gold

Dazzling 1.2ct Princess Cut Diamond Ring set in 18K White Gold
Located in רמת גן, IL
diamond main stone of 1.2 carat cut: Princess Cut color: F clarity: SI2 cut grade: EX 2 diamond side
Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, White Gold

1.54 Ctw Princess Cut Diamond Eternity Band, 14k White Gold, Ring
Located in McLeansville, NC
: - diamonds - princess cut - 2 mm - approximately 1.54 total carats - F-G color, VS2-SI1 clarity Ring Size 6
Category

Early 2000s Band Rings

Materials

Diamond, 14k Gold, White Gold

Estate Yellow & White Diamond Round Princess Cut Bracelet 18K Two Tone Gold
Located in Scottsdale, AZ
For sale is a gorgeous yellow and white diamond bracelet with round and princess cut diamonds! It
Category

21st Century and Contemporary Modern Bracelets

Materials

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

Contemporary 1.30 Carat Platinum Spinel and Princess Diamond Ring
Located in Laguna Hills, CA
) princess-cut diamonds measure 2.3 mm with an estimated weight of .40 carats. The setting is a wide 4.70 mm
Category

21st Century and Contemporary American Contemporary Solitaire Rings

Materials

Diamond, Spinel, Platinum

White Gold Diamond Band - 18k Princess Cut .23ctw Wedding Ring Size 6 1/2
Located in Greensboro, NC
: Princess Color: H Clarity: VS1 Natural Diamonds Carat(s): .03ctw Cut: Round Brilliant Color: G - H Clarity
Category

20th Century Band Rings

Materials

Diamond, 18k Gold, White Gold

9.86 Carats Natural Diamonds Princess Shape Ruby Floral Earrings 18K Yellow Gold
Located in Massafra, IT
carats of round brilliant-cut diamonds, all set in 18K yellow gold. Adorn yourself with these to become
Category

21st Century and Contemporary Italian Art Deco Dangle Earrings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

GIA Certified 0.90 Carat H VS2 Diamond Three Stone Platinum Ring
Located in New York, NY
Certified 0.90 Carats H VS2 The 2 Side stones Princess Cut Diamonds 0.50 Carats Total Weight G VS All 3
Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA 2.85ctw H SI1 Round Cut Diamond Engagement Wedding Platinum Estate Ring
Located in New York, NY
timeless. 1.40ctw diamond estate ring, comprised of 3 rows of diamonds: 10 Princess cut diamonds set in
Category

Early 2000s North American Engagement Rings

Materials

Diamond, Platinum

Amazing GIA Cert 2.06 Carat Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum ring is centered with a sparkling GIA certified princess cut diamond that
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

3-Stone Emerald & Diamond Ring 1.70 Carat 18 Karat Yellow Gold
Located in Laguna Hills, CA
1.50 Carat Princess Emerald and Diamond Ring, 18 Karat Yellow Gold Gorgeous Emerald of Colombian
Category

21st Century and Contemporary Unknown Contemporary Solitaire Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Princess Diamond Multi Stone Engagement Ring, 14K White Gold, Ring Size 5.5
Located in McLeansville, NC
diamonds in this ring is approximately 0.57 carats. Stones: - diamonds - princess cut, 3 stones - 2 - 3.3
Category

Early 2000s Engagement Rings

Materials

Diamond, 14k Gold, White Gold

GIA Cert 14.70 Carat Emerald, Diamond, and Pearl Edwardian Platinum Bracelet
Located in Charleston, SC
. Diamond Detail Various sizes of Mine Cut Diamonds weighing 11.5 Carats Princess cut surrounding Emerald
Category

Antique Early 1900s Unknown Edwardian Link Bracelets

Materials

Diamond, Emerald, Pearl, Platinum

3 Row Rainbow Sapphire & Diamond Straight Line Tennis Bracelet
Located in Santa Barbara, CA
Yellow Gold Gemstones: Sapphires (62) Carat Weight: 7.39 carats total Cut: Princess Color: Blue, purple
Category

21st Century and Contemporary Contemporary Tennis Bracelets

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Yellow Sapphire, Purple...

13.11CT Total Weight Natural Diamonds Multi Shape Bracelet GIA Cert.
Located in New York, NY
sure to turn heads wherever you wear it. The diamonds come in a variety of shapes; Princess Cut
Category

21st Century and Contemporary American Tennis Bracelets

Materials

White Diamond, 18k Gold, White Gold

GIA Blue Sapphire NO HEAT Diamond 18K Tahitian Pearl Vintage Earrings 3.96 CTS
Located in Sylvania, GA
1/2 Inch Wide) 92 Sparkling Round Cut Diamonds VS-SI Clarity F-G Color Approx: 1.62 Carats 2 Fancy
Category

Mid-20th Century Dangle Earrings

Materials

Diamond, Pearl, Blue Sapphire, Gold, 18k Gold

4.74 Carat Fancy Color Diamond Gold Three Stone Ring
Located in Miami, FL
Striking ring crafted in 18 Karat white gold featuring 3 natural Brown Princess Cut diamonds
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Brown Diamond, Diamond, 18k Gold

Vintage 2.00 Carat Sapphire and Diamond Yellow Gold Bangle Bracelet
Located in Santa Barbara, CA
karat gold in a classic, contemporary design, 2 carats of princess cut sapphires and diamonds are
Category

Vintage 1980s Retro Bangles

Materials

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

GIA 36.10ctw Sapphire Diamond Tennis Bracelet 950 Platinum 7" 8.8mm
Located in McLeansville, NC
- Total Carats - 7.10ctw Cut - Princess Brilliant Color - H - J Clarity - VS2 Metal: 950 Platinum Weight
Category

2010s Tennis Bracelets

Materials

Diamond, Sapphire, Platinum

Rare GIA Certified 50 Carat Greenish Blue Zircon Pendant In 18K and Platinum
Located in Miami, FL
___________________________________ Diamond Details(1): - Carat: 0.66 CTTW - Cut: Princess - Clarity: VS1 - Color: E-F - Quantity: 3 Diamond
Category

21st Century and Contemporary North American Art Deco Pendant Necklaces

Materials

Diamond, Blue Zircon, Zircon, 18k Gold, Yellow Gold, Platinum

GIA 18K Blue Sapphire Diamond Ring 12.04 TCW Unheated Ceylon Gold
Located in Sylvania, GA
UNHEATED SAPPHIRE DIAMOND ANTIQUE RING & BOX! HUGE 9.52 CARAT BRILLIANT ROYAL BLUE GIA CERTIFIED RARE NO
Category

Antique 19th Century Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 18k Gold

Tiffany & Co. GIA Platinum Blue Sapphire Diamond Ring Unheated Ceylon 15.60 CTS
Located in Sylvania, GA
, Georgia Valuable 15.60 Carat Antique Ring of Very Rich Platinum & HUGE Diamonds & GIA Certified Sapphire
Category

Antique 19th Century Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

14W PC & RBC Diamond Band
Located in McLeansville, NC
total carats. Stones: - diamonds - princess cut, 5 stones - 3 mm - approximately .90 total carats
Category

1990s Band Rings

Materials

Diamond, Gold, 14k Gold, White Gold

14KT White Gold .75 ctw Diamond Cluster Engagement Ring
Located in McLeansville, NC
carats. Total approximate diamond weight is 3/4 carat. Stones: - diamonds - princess cut, 12 stones
Category

Early 2000s Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Natural Sapphire Diamond Ring 6.75 14k W Gold 13.3 TCW Certified
Located in Brooklyn, NY
5.11 mm 20 Round Diamonds: Approx. 0.40 TWT (Color: G-H/Clarity: VS-SI) 3 Princess Cut Diamond: Approx
Category

2010s American Fashion Rings

Materials

Diamond, Sapphire, Gold

Multi Color Rainbow Sapphire and Diamond Band Ring
By Bella Rosa Estate Jewelers
Located in Santa Barbara, CA
Gemstones: 9 Sapphires Carat Weight: 1.29 Cut: Square Princess Color: Purple, Blue, Teal, Green, Yellow
Category

2010s Contemporary Band Rings

Materials

Diamond, Sapphire, Pink Sapphire, Yellow Sapphire, Green Sapphire, Purpl...

18K Gold Multi Shape Diamond Wedding Band
Located in Santa Barbara, CA
: 18K Yellow Gold Stone: Diamond (9) Carat Weight: 1.12 Carats Total Cut: 3 Round 3 Princess 3 Marquis
Category

21st Century and Contemporary Modernist Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

Platinum Verragio Oval Blue Topaz & Channel-Set Diamond Ring TCW = 1.85 w/ CoA
Located in Sherman Oaks, CA
Princess Cut Diamonds Measuring 3.20 x 3.20 x 2.10 mm Approximate Total Weight of 2 Stones= 0.35 Carats
Category

2010s Cocktail Rings

Materials

Diamond, Topaz, Platinum

Princess Cut Diamond Engagement Ring 4.2 Carat H-SI1 GIA Certfied
Located in Aliso Viejo, CA
ring has a gorgeous GIA certified H-SI1 3 carat Princess Cut in the center. The center stone is set in
Category

2010s American Modern Engagement Rings

Materials

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

GIA Certified 2.00 Carat Princess Cut G VS2 Diamond 14 Karat White Gold Ring
Located in New York, NY
Incredible Deal on GIA Certified 2.00 Carat Princess Cut, G Color, VS1 Clarity Diamond. 14 Karat
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, 14k Gold

3 Carat Oval Kunzite and Princess Diamond Ring
Located in Aliso Viejo, CA
. The center is an oval cut Kunzite which weighs approx. 3 carats and sits in a rose gold head. The
Category

1990s American Modern Cocktail Rings

Materials

Kunzite, Diamond, White Gold, Rose Gold, 14k Gold

Princess Cut Halo Engagement Ring, 1.5 Carat Total Weight
Located in West Hollywood, CA
Princess Cut Halo Engagement Ring - 1.5 Carat Total Weight Ring May have be made to order from
Category

2010s Contemporary Engagement Rings

Materials

Diamond, 14k Gold

Leo Princess Cut Center Ring in Round Diamond Mounting 1.54 Carat 18 Karat
Located in Daytona Beach, FL
Women's diamond engagement ring consisting of .98 carat Leo princess cut center and round diamonds
Category

2010s Unknown Modern Engagement Rings

Materials

Diamond, 18k Gold

10.49 Carat GIA Cert Blue Sapphire Diamond Gold Ring
Located in Chicago, IL
side round brilliant cut diamonds. The diamonds are G-H in color and VS in clarity. Ring size 6 3/4.
Category

2010s American Cocktail Rings

Materials

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

5.18 Carat Cushion Cut Ruby Gold Platinum Ring
Located in Chestnut Hill, MA
Platinum and 18 karat yellow gold custom made 3 stone ring consisting of 1 cushion cut Ruby(GIA
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

JB Star GIA 3 Carat Princess Cut Diamond Ring
By JB Star
Located in Bethesda, MD
A stunning 3 carat princess cut diamond set in a signature JB Star, custom ring. ♦ Designer: JB
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 18k Gold

  • 1
Get Updated with New Arrivals
Save "Gia 3 Carat Princess Cut Diamond", and we’ll notify you when there are new listings in this category.

Gia 3 Carat Princess Cut Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate gia 3 carat princess cut diamond for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from gold, 18k gold and 14k gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a gia 3 carat princess cut diamond from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. Creating a gia 3 carat princess cut diamond has been a part of the legacy of many jewelers, but those produced by Cartier, DGI and Jack Kelege are consistently popular. See these pages for a princess cut iteration of this accessory, while there are also round cut cut and oval cut cut versions available here, too. Finding a gia 3 carat princess cut diamond for sale for women should be easy, but there are 43 pieces available to browse for unisex as well as men, too.

How Much is a Gia 3 Carat Princess Cut Diamond?

On average, a gia 3 carat princess cut diamond at 1stDibs sells for $6,872, while they’re typically $925 on the low end and $275,000 for the highest priced versions of this item.

Finding the Right rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About Gia 3 Carat Princess Cut Diamond
  • 1stDibs ExpertNovember 8, 2023
    How big a 2-carat diamond with a princess cut is varies from piece to piece. However, the average size is 7 millimeters by 7 millimeters. The measurement is around 9/32 inches, so a 2-carat princess-cut diamond will be just a little over a quarter-inch in size. On 1stDibs, find an assortment of princess-cut diamond jewelry.
  • 1stDibs ExpertSeptember 28, 2021
    Like with most diamond products, the price of a 1-carat princess cut diamond can range dramatically. On 1stDibs, find 1-carat princess cut diamond rings, earrings, necklaces and bracelets starting at $999 to $16,500.