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1 Carat Cushion Cut Diamond

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GIA 6.02 Carat Natural Spinel Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
1920's Spinel and diamond three-stone engagement ring. Cushion cut pink Spinel half bezel set
Category

Early 20th Century Three-Stone Rings

Materials

Diamond, Spinel, Platinum

TAJ 10.80 Carat Opal Diamond Halo Yellow Gold Pendant Necklace
Located in Stamford, CT
flash, with a halo of 31 full cut diamonds set in 18k yellow gold. 18 inch chain. Circa 1980. 1
Category

Late 20th Century Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold, Gold

28.90 Carat Golden Beryl and Diamond Enhancer Pendant in White and Yellow Gold
By Sarosi By Timeless Gems
Located in Los Angeles, CA
50 round brilliant-cut diamonds, 1.53 carats total
Category

21st Century and Contemporary North American Artisan Necklace Enhancers

Materials

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

J. Birnbach 9.63 Carat Total Emerald Fancy Yellow Diamond Bracelet in 18K Gold
By J. Birnbach
Located in New York, NY
, sophistication, and rarity. Key Details: - 9.63 carat total weight, 10 emerald cut and 1 cushion cut emeralds
Category

21st Century and Contemporary American Contemporary Link Bracelets

Materials

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

18K White Gold Halo Diamond GIA Certified 3.13 Carat Tsavorite Garnet Ring
Located in Los Angeles, CA
Rectangular Cushion Cut Tsavorite Garnet 3.13 Carats, 70 Round Diamonds 1.35 G VS2-SI1 1.35 Carats. Comments
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Garnet, Tsavorite, 18k Gold, White Gold

Magnificent Bvlgari 8.23 Carat Ruby Diamond Platinum 18k Yellow Gold Ring, AGL
Located in Beverly Hills, CA
like Bvlgari was able to source it. It is complemented by 2 trillion-cut diamonds set on each side of
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold, Platinum

New 18K Gold 2.29ctw GIA Ceylon Round Sapphire Round Diamond Cushion Halo Ring
Located in Montclair, NJ
Diamonds - Round Brilliant Cut - Pave Set - G/H Color - VS1/VS2 Clarity - 0.40ctw (approx.) Total Carat
Category

2010s American Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

Natural Yellow Radiant and White Diamond 1.15 Carat TW Gold Cocktail Ring
Located in New York, NY
Natural Cushion Light Yellow Diamond Natural Round White Diamonds 18K Yellow/White Gold Size 6 1/2
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Yellow Diamond, Gold, 18k Gold, White Gold, Yell...

Peter Suchy GIA Certified 3.25 Carat Diamond Yellow Gold Stud Earrings
By Peter Suchy
Located in Stamford, CT
cut diamond , U-V SI2 approx. 1.57cts GIA Certificate # 5202867825 1 cushion modified diamond, N I
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Vintage GIA Certified 5 Carat Heart Blue Sapphire, Diamond Pearl Necklace
Located in Miami, FL
sapphire are additional diamond detailing, both baguette and round cut diamonds each have 1 carat weight
Category

21st Century and Contemporary North American Baroque Pendant Necklaces

Materials

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

Art Deco Style Diamond Red Pink Ruby Cushion Shape Halo 18K White Gold Ring
By Unbranded
Located in Oakton, VA
the Art Deco era! The setting features center 0.58 carats old cut diamond with rich red natural rubies
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

18k Gold Platinum 2.34ctw GIA No Heat Purple Sapphire Old Mine Cut Diamond Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Sapphire - Old Cushion Brilliant Cut - Prong Set -Purple Color
Category

21st Century and Contemporary American Three-Stone Rings

Materials

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

Suzy Levian 14K Yellow Gold Oval-Cut Sapphire and Diamond Vintage-Inspired Ring
By Suzy Levian
Located in Great Neck, NY
: 14k Gemstone Cut: Cushion Total Diamond Weight: 0.25 Carats Jewelry Setting: Basket Diamond Cut: Round
Category

Antique 19th Century American Victorian Cocktail Rings

Materials

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

Edwardian French 18k/Platinum Diamond Earrings
Located in Narberth, PA
single cut diamonds have an approximate total carat weight of .05ctw. Each earring then features a larger
Category

Vintage 1910s Edwardian Drop Earrings

Materials

Diamond, Gold, Platinum

Peter Suchy EGL Certified .96 Carat Diamond Halo Rose Gold Engagement Ring
By Peter Suchy
Located in Stamford, CT
celebration of sophistication, where the brilliance of a .96 carat Old Mine cut bezel set diamond takes center
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

8.43 Carat Yellow Sapphire Diamond Halo Cocktail Ring in 18 Karat White Gold
Located in Scottsdale, AZ
captivating 8.43 carat rectangular cushion-cut yellow sapphire as its centerpiece. The vibrant hue of the
Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

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

1.20 Carat Basaltic Sapphire 0.54 Carat Diamond, 18k Yellow Gold Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
(average grades) P1 Cut Old European Content 0.54 carat Number of Diamonds 20 Dimensions Width of setting
Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold, Platinum

Ravishing 18k Rose Gold Halo Ring w/ 0.84 Carat Natural Diamonds IGI Cert
Located in רמת גן, IL
A gorgeous art deco ring with a dazzling 0.8 carat square cushion modified natural diamond. It has
Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, Rose Gold

Peter Suchy 3.10 Carat Tourmaline Diamond Halo White Gold Cocktail Ring
By Peter Suchy
Located in Stamford, CT
Green tourmaline and diamond cocktail ring. Cushion cut 3.10 carat center stone with a halo of
Category

21st Century and Contemporary Cocktail Rings

Materials

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

Victorian 4.40 CT Old Mine Cut Diamond Daisy Pendant
Located in Napoli, IT
yellow gold and silver, tested Hallmarks: none/worn Gems: 1 cushion old mine cut diamond of approx 1.90
Category

Antique 1860s European Victorian Pendant Necklaces

Materials

Diamond, 18k Gold, Silver

3.45 Carat Deep Green Emerald Diamond Engagement Ring in 14k Solid Yellow Gold
By VR Jewels
Located in New York, NY
intellectual capacity of the person. Designed with two cushion cut emerald set in center with diamonds that
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Emerald, Gold, 14k Gold, Yellow Gold

2 Carat Natural Ruby and Diamond Ring
Located in Bay Harbor Islands, FL
Beautiful 2 Carat Natural Ruby and Diamond ring features a rectangular cushion-shaped ruby framed
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Victorian Engagement Ring 14k Gold Silver Old Mine Cut Diamond
Located in Beverly Hills, CA
A Victorian-era engagement ring featuring a remarkable 1.75-carat old mine cut diamond. The cushion
Category

Early 20th Century Victorian Engagement Rings

Materials

Diamond, Yellow Gold, Silver, 14k Gold

GIA Certified 3-Stone Ring with 4.01 Carat Fancy Light Yellow Diamond
By M&V Vanguard Jewelry
Located in New York, NY
, includes approximately 1 carat of small full brilliant cut diamonds. Side stones are Trillion Cut diamonds
Category

2010s American Art Deco Three-Stone Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

Faceted Orange Mandarine Garnet Ring with 18 Carat White Gold and Diamonds
Located in Kirschweiler, DE
brilliant-cut Diamonds is totally handmade. Details: ringsize: 7 1/2 (55) Fac. Mandarine Garnet, 3.68 ct
Category

Late 20th Century Unknown Arts and Crafts Wedding Rings

Materials

Diamond, Garnet, Gold, 18k Gold, White Gold

Art Deco Style Blue Sapphire Green Emerald Black Onyx Cushion White Gold Ring
Located in Oakton, VA
, weighing 1.25 carats, natural French cut emeralds, surrounded by black onyx. The shoulders of the ring
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Emerald, Onyx, Sapphire, 14k Gold, White Gold

Diamond Cluster Ring
Located in Darnestown, MD
Elegant cocktail ring with more than five carats of brilliant cut diamonds. The diamonds are set on
Category

Vintage 1960s American Contemporary Cluster Rings

Materials

Diamond, 14k Gold

GIA Sapphire NO Heat Diamond 14K Pendant Vintage Necklace 18K Chain 5.46 Carats
Located in Sylvania, GA
SAPPHIRE. Gorgeous Sapphire is Crowned With 2.36 Carats of Sparkling White European Cut Diamonds
Category

20th Century Victorian Pendant Necklaces

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, 14k Gold, Yellow Gold

AGL 18.92 Carat Black Opal with 25.94 Carat Tsavorite and Diamonds in Platinum
By Kiersten Elizabeth
Located in Southport, CT
5.31 Carats (68) Round Brilliant Cut Diamonds Pendant Length: 1 5/8" Chain Length: 20" Drop from
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Diamond, Opal, Tsavorite, Platinum

18.80 Carat Yellow Sapphire Feather Brooch with Diamonds in 14 Karat Rose Gold
Located in Scottsdale, AZ
: Yellow Sapphire and Diamond Yellow Sapphire Count: 1 Yellow Sapphire Cut: Rectangular Cushion Yellow
Category

21st Century and Contemporary Unknown Contemporary Brooches

Materials

Diamond, Yellow Sapphire, Gold, 14k Gold, Rose Gold, White Gold, Yellow ...

Nazarelle 14 Karat White and Rose Gold 20.45 Carat Morganite and Diamond Bangle
By Nazarelle
Located in Houston, TX
This bangle is made with 14K white and rose gold and features 1 cushion morganite with a unique cut
Category

2010s American Contemporary Bangles

Materials

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

LEGACY 55 Carat Graduated Fancy Yellow Diamond Rivière Necklace
Located in Mumbai, IN
cushion diamonds • GIA certification for all diamonds over 1 carat — verified pedigree • One-of-a-kind
Category

21st Century and Contemporary Indian Modern Drop Necklaces

Materials

Yellow Diamond, 18k Gold

William Goldberg 63 Carat Spectacular Diamond Infinity Necklace
By William Goldberg
Located in New York, NY
weight of all diamonds: 63 cttw. Center diamonds range from 1 to 2 carats each. Length: drops to 17
Category

21st Century and Contemporary American Modern Multi-Strand Necklaces

Materials

Diamond, Platinum

Platinum GIA 10.19ctw Elongated Emerald Cut Sapphire Diamond Custom Made Ring
Located in Montclair, NJ
) Natural Genuine Diamonds - Cushion Cut - Prong Set - E Color - VVS1 Clarity - 1.60ctw (exact - certified
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

10.36 Carat Oval Cut No Heat Sri Lanka Blue Sapphire Drop Pendant Necklace
By Gad Co.
Located in Miami, FL
________________________________________ Side Stone Details(1): - Type: Diamond - Carat: 2.80 - Cut: Round - Color: E-F - Clarity: VVS2-VS1
Category

Late 20th Century Sri Lankan Victorian Pendant Necklaces

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

AGL Certified 8 Carat No Heat Kashmir Sapphire, Burma Ruby, Diamond Stack Ring
Located in Miami, FL
Certified Cushion Cut Burma Ruby, Kashmir Sapphire, & Diamond Stackable Ring Crafted in 18k White & Yellow
Category

21st Century and Contemporary Indian Art Nouveau Cocktail Rings

Materials

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

Georgian Enameled 0.60 Carat Diamond Engagement Ring
Located in Narberth, PA
stunning cushion Mine Cut diamond at the center, which weighs approximately 0.60ct with estimated K color
Category

Antique 1830s Unknown Georgian Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

Art Deco Diamond Ring .46ct G/SI1 EGL Old Mine Cushion Original 1920 s 18K
Located in Dearborn, MI
Diamond 18K White Gold Featuring a Stunning .40ct G/SI1 Natural Mined Old Mine Cushion Cut Diamond
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond

Eighteen Karat Yellow Gold Contemporary Ring with Cushion Sapphire
By Polya Medvedeva Jewellery
Located in Berlin, DE
vivid blue great cut transparent cushion sapphire weighing 1,75 carats and measuring 7.5x7mm. The ring's
Category

21st Century and Contemporary German Contemporary Fashion Rings

Materials

Sapphire, Gold, 14k Gold, 18k Gold, Rose Gold, White Gold, Yellow Gold

GIA Certified 5.91 Carat Sapphire Diamond Gold Dome Cocktail Cluster Ring
Located in Stamford, CT
Sapphire and diamond ring. Cushion brilliant cut center sapphire in a cluster of round and rose
Category

Vintage 1970s Dome Rings

Materials

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

GIA 1.39 Carat Orange Red Spinel Diamond Gold Three-Stone Engagement Ring
By Dana
Located in Stamford, CT
red and orangey coloring to it. 1 cushion cut orangey red Spinel, approx. total weight 1.39cts, VS
Category

Late 20th Century Engagement Rings

Materials

Diamond, Spinel, Gold, 14k Gold, White Gold

Suzy Levian 14 Karat White Gold Oval-Cut Pink Ceylon Sapphire and Diamond Ring
By Suzy Levian
Located in Great Neck, NY
Gemstones: 1 Diamond Color: White, H-I Side Stone: Diamond Gold Karat: 14k Gemstone Cut: Oval Total Diamond
Category

21st Century and Contemporary Hong Kong Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Pink Sapphire, Gold, 14k Gold, White Gold

Peter Suchy GIA Certified 1.00 Carat Old Mine Diamond Rose Gold Engagement Ring
By Peter Suchy
Located in Stamford, CT
1.00 carat old mine diamond that is certified by the GIA as light yellow and whose antique cut sparkles
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

3.03 Carat Violet Blue Natural Sapphire Sasha Primak Engagement Ring
By Sasha Primak
Located in Stamford, CT
GIA certified violet blue cushion cut natural untreated Sapphire and trapezoid and square diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

1.95 Carat Victorian Royal Deep Blue Natural Platinum Sapphire Pendant Necklace
Located in Stamford, CT
at 16 inches. The GIA has certified the sapphire as natural, no heat sapphire. 1 cushion cut
Category

Antique Late 19th Century Pendant Necklaces

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

19th Century 4.50 Carat Cabochon Emerald Diamonds Duchess Ring
Located in Poitiers, FR
ring, it is set with a cabochon emerald in closed setting surmounted by 2 antique cushion- cut diamonds
Category

Antique Late 19th Century French Napoleon III Engagement Rings

Materials

Diamond, White Diamond, Emerald, Gold, 18k Gold, Yellow Gold, Silver, St...

GIA Certified 5.15 Carat Colombian Emerald Diamond Gold Platinum Engagement Ring
Located in Stamford, CT
52 round old european cut diamonds. Natural minor surface abrasions. Handmade 18k yellow gold and
Category

Early 20th Century Fashion Rings

Materials

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

Antique French Gold Platinum 1.22ct GIA Old Mine Cut Diamond Sapphire Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Diamond - Old Mine Cut - Prong Set- L Color - VS1 Clarity
Category

Antique 19th Century Cocktail Rings

Materials

Diamond, Sapphire, Gold, White Gold, Platinum

14K Yellow Gold Tanzanite Diamond Ring
Located in Queens, NY
brilliant cut diamonds weighing a total of approx. 0.45 carat. Gold tested. Measuring approx. US size 6, 1/4
Category

21st Century and Contemporary Contemporary Three-Stone Rings

Materials

Diamond, Tanzanite, 14k Gold, Yellow Gold

Antique 1880s 1.12 Carat Diamond and Emerald Yellow Gold Silver Set Twist Ring
Located in Jesmond, Newcastle Upon Tyne
embellished further with seven cushion cut and Old European round cut diamonds, graduating in size. The
Category

Antique 1880s Unknown Cocktail Rings

Materials

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

Platinum oval - cut 2.39 ct. NATURAL SAPPHIRE Ring ( Not heated ) BURMA
Located in Braintree, GB
) Weight:3.50 grams Diamonds - Cut: Baguettes Quantity:2 Total carat weight: 0.22 carats in total
Category

20th Century European Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Ring Platinum Old European Cut Diamond French Estate Jewelry
Located in Beverly Hills, CA
geometry and often feature Old European, and cushion cut diamonds. Black and white combos, such as diamond
Category

Vintage 1920s French Art Deco Cocktail Rings

Materials

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

Antique Old Mine Cut Diamond and Emerald Ring, circa 1920
Located in London, GB
eight cut diamonds in open back grain settings with a combined weight of 0.50 carats and additionally
Category

Vintage 1920s Unknown Edwardian Cluster Rings

Materials

Diamond, Emerald, Platinum

Domed Diamond Cocktail Ring
Located in Darnestown, MD
banding. The ring has a total diamond weight of approximately 1.2 carats; stones are SI 1. The ring is
Category

Vintage 1960s Italian Modern Dome Rings

Materials

Diamond, 18k Gold

Gold, Fancy Yellowish-Orange Diamond and Diamond Ring
Located in New York, US
Centering a 0.51 carat Fancy Yellowish-Orange diamond, accented by 30 round brilliant cut diamonds
Category

2010s Cocktail Rings

Materials

Diamond, Gold

Peter Suchy 14.83 Carat GIA Cert Peridot Diamond Halo Gold Cocktail Ring
By Peter Suchy
Located in Stamford, CT
Large cushion Peridot and diamond cocktail ring. GIA certified cushion cut green with hints of
Category

21st Century and Contemporary Cocktail Rings

Materials

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

Antique Victorian Sapphire Old Mine Cut Diamond Bracelet Gold Silver 1890s
Located in Lisbon, PT
cushion-shaped sapphires of a dark blue color and two Old Mine-cut diamonds, highlighted with smaller Old
Category

Antique Late 19th Century Unknown Late Victorian Link Bracelets

Materials

Diamond, Sapphire, Gold, Yellow Gold, Silver

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1 Carat Cushion Cut Diamond For Sale on 1stDibs

Find the exact 1 carat cushion cut diamond you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and white gold. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a 1 carat cushion 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. For this particular piece, .5 carat and 1 carat are consistently popular carat weights. Creating a 1 carat cushion cut diamond has been a part of the legacy of many jewelers, but those produced by Peter Suchy, Tiffany Co. and Alberto are consistently popular. Today, if you’re looking for a cushion cut version of this piece and are unable to find the perfect match, our selection also includes antique cushion cut and round cut alternatives. When shopping for a 1 carat cushion cut diamond, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 1 Carat Cushion Cut Diamond?

The price for a 1 carat cushion cut diamond starts at $1 and tops out at $1,825,000 with these rings, on average, selling for $6,615.

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.  

Questions About 1 Carat Cushion Cut Diamond
  • 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.