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Victorian 18 Karat Gold 2.40 Carat Old Mine Diamond Flower Dangle Bar Pin Brooch
Located in Montclair, NJ
! -- Stone(s) -- (1) Natural Genuine Diamond - Cushion Old Mine Cut - Eight-Prong Set - J Color - SI1 Clarity
Category

Antique 1890s Victorian Brooches

Materials

Diamond, 18k Gold

1940s 10.50 Carat Sapphire with Yellow Gold and Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
Sapphire One Colour Blue Cut Cushion Content 5.00 carats Dimensions 9.7mm x 9.7mm x 6.9mm Sapphire Two
Category

Vintage 1940s French Retro Cocktail Rings

Materials

Pink Sapphire, Blue Sapphire, Sapphire, Platinum, Yellow Gold, 18k Gold,...

2.65 Carats of Tourmaline, Sapphire, and Diamond Necklace in 18 Karat White Gold
By Kiersten Elizabeth
Located in Southport, CT
: 0.43 Carats Cushion Cut Sapphire: 0.49 Carats Diamonds Dangling from Chain: 0.66 Carats Overall Gem
Category

21st Century and Contemporary American Modern Chain Necklaces

Materials

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

Vintage Art Deco Era Emerald Diamond Cocktail Ring
Located in Montgomery, AL
Combined Weight: 0.5 Carat 8 - 1.8mm Single Cut Diamonds; IJ Color; SI Clarity; Estimated Combined Weight
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

GIA 1.20 Carat Art Deco Diamond 14 Karat Yellow Gold Sapphire Engagement Ring
Located in Hicksville, NY
Weight: 1.20ct total weight (Center Stone) Cut: Old Mine Brilliant (Antique Cushion) Origin: Burma
Category

Vintage 1910s Unknown Art Deco Engagement Rings

Materials

Diamond, Sapphire, Yellow Gold

TUTTI FRUTTI 1950 Art-Deco Pendant Brooch In Platinum Diamonds Gemstones
Located in Miami, FL
, with 116 graduated round brilliant cuts diamonds, with a total estimate weight of 3.48 carat, white
Category

Vintage 1950s American Art Deco Pendant Necklaces

Materials

White Diamond, Emerald, Ruby, Blue Sapphire, Diamond, Platinum

Stunning Art Deco Style Emerald Diamond Earrings
Located in San Francisco, CA
European and round brilliant-cut diamonds, weighing in total approximately 2.30 carats. The earrings weigh
Category

21st Century and Contemporary Unknown Art Deco Drop Earrings

Materials

Diamond, Emerald, Platinum

14k White Gold Pearl and Diamond Ring
Located in Lake Worth, FL
pearl, swirl design surrounded with two row of sparkling 30 round cushion cut diamonds about 1.5 carat
Category

Vintage 1970s North American Cocktail Rings

Materials

Diamond, Pearl, White Gold

Captivating Zircon Diamond Double Halo Ring in 14k
Located in Bloomington, MN
This exquisite ring is crafted in 14k yellow gold and showcases a dazzling 1.15-carat cushion-cut
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

French 1925s Diamonds 18 Karat White Gold Platinum Art Deco Ring
Located in Poitiers, FR
Art Deco ring is square with cut angles, openwork and set with rose-cut diamonds. An antique cushion
Category

Vintage 1920s French Art Deco Bridal Rings

Materials

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

Scott Kay Lemon Citrine Ring with Diamond Accents
By Scott Kay
Located in Coral Gables, FL
Scott Kay Sterling Silver Ring Featuring A Cushion Cut Lemon Citrine Accented by 24 Round Diamonds
Category

21st Century and Contemporary Fashion Rings

Materials

Citrine, Diamond, Sterling Silver

1925s Art Deco Engraved Jade Diamonds 18 Karat Yellow Gold Ring
Located in Poitiers, FR
at the base of the ring, 2x3 antique cushion-cut diamonds and 8/8 diamonds are set. The basket is
Category

Vintage 1920s French Art Deco More Rings

Materials

Jade, Diamond, Gold, Yellow Gold, 18k Gold

Charles Krypell Peridot Yellow Sapphire Diamond Gold Earrings
By Charles Krypell
Located in Stamford, CT
earrings. 2 cushion Peridot approx. total weight 4.46cts, 8 x 8mm 170 full cut diamonds approx. total
Category

21st Century and Contemporary Unknown Clip-on Earrings

Materials

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

AJD Glittering Extraordinary Clear 10.35 Ct. Natural REAL Zircon Diamond Ring
By Aria Jewelry Design
Located in Raleigh, NC
) enhanced with teeny tiny little white diamonds set in this sterling silver ring size 8 1/2 sizable (we size
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Zircon, Sterling Silver

18K Yellow Gold Aquamarine Diamond Ring
Located in Laguna Beach, CA
carats. On the sides are six round brilliant cut diamonds, .20 total carats, H to I color, Vs to Si
Category

Late 20th Century Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, Yellow Gold

Art Deco Sapphire and Diamond Cluster Ring
Located in Chipping Campden, GB
A delightful oval cut sapphire and diamond cluster ring set in platinum throughout. The cushion cut
Category

Early 20th Century Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Stunning 1.37ct Diamonds Drop Earrings in 14K White Gold
Located in רמת גן, IL
These elegant earrings are crafted in 14K white gold and feature 2 cushion-cut diamonds with a
Category

2010s Singaporean Drop Earrings

Materials

Diamond, 14k Gold, White Gold

Antique Victorian Gold Coin Purse with Rubies and Diamonds
Located in New York, NY
European cut Diamonds weighing approximately a total of 0.80 carat. Circa late 1800s 3 1/2 x 2 1/8 inches
Category

Antique Late 19th Century Boxes and Cases

Materials

Diamond, Ruby, 14k Gold

Exceptional Unheated Sapphire, Emerald Diamond Ring
Located in San Francisco, CA
showstopper features at its center a 2.35 carat unheated vibrant blue cushion cut sapphire set in a gorgeous
Category

Early 20th Century Unknown Cocktail Rings

Materials

Diamond, Emerald, Sapphire, Platinum

18K Yellow Gold Checkerboard Blue and Brown Topaz Diamond Three-Stone Ring
By Valentin Magro
Located in New York, NY
each side. A smooth gold shank finishes the ring. The total weight is 0.08 carats of 8 brilliant cut
Category

2010s American Three-Stone Rings

Materials

Diamond, Topaz, Blue Topaz, Gold, 18k Gold, Yellow Gold

Joke Quick Burmese Spinel Padparadscha Sapphire Pink Diamond Ring
By Joke Quick
Located in Antwerp, BE
natural white DEGVVS brilliant-cut diamonds: 0.58 ct. Total carat gemstones: 3.09 ct. Total carat
Category

2010s Belgian Contemporary Fashion Rings

Materials

Diamond, Sapphire, Spinel, Padparadscha Sapphire , Pink Diamond, 18k Gol...

Antique Sapphire and Diamond Twist Ring in 18k Yellow Gold
Located in Jesmond, Newcastle Upon Tyne
this fine example of antique jewellery. Sapphire Quality Colour Blue Cut Cushion Content 0.60 carat
Category

Vintage 1910s Three-Stone Rings

Materials

Diamond, Sapphire, Yellow Gold, Platinum

14 Karat White Gold Amethyst and Diamond Ring
Located in Washington Depot, CT
14 Karat White Gold Amethyst and Diamond Ring- This stunning ring features one cushion cut
Category

20th Century Fashion Rings

Materials

Amethyst, Diamond, White Gold

Romantic Morganite Diamond Accent Ring in 14k
Located in Bloomington, MN
set within a sparkling diamond-accented halo. The center morganite weighs 1.00 carat and is prong-set
Category

Late 20th Century Contemporary Engagement Rings

Materials

Diamond, Morganite, 14k Gold, Rose Gold

Vintage 1.52ct Ceylon Blue Sapphire and 0.68ct Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
sapphire ring with diamonds. Sapphire Quality Origin Sri Lanka (Ceylon) Colour Blue Cut Cushion Content
Category

20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

2.75ctw Tanzanite Diamond Ring 18k Yellow Gold Size 8.75 Cocktail
Located in McLeansville, NC
Gemstone Information: - Natural Tanzanite - Carats - 0.75ct Cut - Cushion Color - Purple / Blue
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Tanzanite, 18k Gold, Yellow Gold

Edwardian 2.30ct Sapphire and 1.05ct Diamond 18k Yellow Gold Ring
Located in Jesmond, Newcastle Upon Tyne
Edwardian jewellery. Sapphire Quality Origin Sri Lanka (Ceylon) Colour Blue Cut Cushion Content 2.30 carats
Category

Vintage 1910s Band Rings

Materials

Diamond, Sapphire, Yellow Gold

Spectra Fine Jewelry Yellow Diamond Chandelier Earrings
By Spectra Fine Jewelry
Located in New York, NY
- and cushion-shape vivid yellow diamonds with an estimated total weight of 15 carats, along with round
Category

21st Century and Contemporary American Chandelier Earrings

Materials

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

Vintage 1.70Ct Thai Ruby and 1.68Ct Diamond Platinum Cocktail Ring 1975
Located in Jesmond, Newcastle Upon Tyne
ruby jewellery. Ruby Quality Origin Thailand (Siam) Cut Cushion Content 1.70 carats Dimensions 8.70mm
Category

Vintage 1970s Cluster Rings

Materials

Diamond, Ruby, Platinum

Antique sapphire diamond 18k rose gold cluster ring
Located in Beverly Hills, CA
: Approximately .70 carat Accent stone: 8 old mine cut diamonds Weight: Approximately 1.50 carats Color: H
Category

Antique 1890s Victorian Cocktail Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, Rose Gold

18 Kt, Earrings Minor Colombian 5.39 5.14ct Emeralds, Diamonds, CGL Certified
Located in Antwerp, BE
: Marquise cut Diamonds together 0.48 ct. Cushion cut Fancy Yellow Diamonds together (0.63+0.64) = 1.27 ct
Category

21st Century and Contemporary Belgian Artisan Dangle Earrings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

18 Karat Gold Ladies Ring with Natural Burma Ruby and Diamonds
Located in Braintree, GB
Size : 2.6 x 2.2 x 2.1 grams Ruby - Cut: Cushion Colour: Red Size : 1.3 ct Measurements : 6.5 x 5.9 x
Category

Vintage 1960s Three-Stone Rings

Materials

Diamond, Ruby, Gold

AIG Certified 11.70 Ct Zambian Emeralds 7.90 Ct Diamonds 18k Gold Earrings
Located in New Delhi, Delhi
carats, in perfect cushion cut, and 6 pieces are 2,30 carats, fine quality and grade, spectacular
Category

21st Century and Contemporary Chandelier Earrings

Materials

Diamond, Emerald, 18k Gold

GIA 1.55ct Natural No-Heat Orange Red Spinel and Diamond 3-Stone Vintage Ring
Located in New York, NY
features a Gorgeous gem : 1.15 carat Natural Unheated " NO HEAT " Cushion Cut Deep Orangy RED Spinel
Category

Vintage 1950s Engagement Rings

Materials

Diamond, Spinel, 18k Gold, White Gold

Louis Comfort Tiffany Co. Amethyst Diamond Platinum 14K Gold Antique Brooch
By Louis Comfort Tiffany
Located in Philadelphia, PA
cut amethyst weighing approximately 14.25 carats Transparent deep purple in color and prong set in
Category

Vintage 1910s Brooches

Materials

Amethyst, Diamond, Gold, 14k Gold, Yellow Gold, Platinum

Pave Heart 14K (or 18k upon request) Yellow Gold Link Chain Diamond Bracelet
Located in Los Angeles, CA
Request) Gold Color : Yellow Gold Stone Type : Cushion Cut Weight : 8.36GR Diamond Color : G-H Diamond
Category

2010s American Modern Chain Bracelets

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold, Platinum

Gold, Tanzanite, and Diamond Ring
Located in Princeton, NJ
approximately 9.27 carat cushion shaped tanzanite resting in a halo of 16 round brilliant cut diamonds which
Category

Late 20th Century American Contemporary Cocktail Rings

Materials

Diamond, Tanzanite, Gold, 18k Gold

Antique Edwardian Platinum 2.33ctw GIA Sapphire Old European Diamond Scroll Ring
Located in Montclair, NJ
.) (8) Natural Genuine Diamonds - Old Single Cut - Pave Set - VS1/VS2 Clarity - G/H Color - 0.08ctw
Category

Antique Early 1900s Edwardian Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Antique 7.25 Ctw. Sapphire Diamond Horseshoe Pendant Brooch by Cartier Paris
By Cartier
Located in Los Angeles, CA
combination of Old Mine Cut and Rose Cut diamonds, weighing approximately 2.36 carats in total. The horseshoe
Category

Antique Late 19th Century French Victorian Brooches

Materials

Diamond, Sapphire, 18k Gold, Silver

Art Deco 1920 Platinum Ring with 5.51 CTW in Orange Topaz and Diamonds
Located in Aventura, FL
. At its heart lies a stunning 3.35 carat Cushion Cut Orange Topaz, exuding a warm, fiery brilliance
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Topaz, Platinum

French Late Art Deco Natural Ceylan Sapphire Diamonds Platinum Ring
Located in Poitiers, FR
with 8/8 and antique- cut diamonds. Weight of the sapphire : 3.40 carats approximately. Certified
Category

Vintage 1930s French Art Deco Dome Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Estate Platinum Diamond Engagement Ring 2.05ct
Located in Narberth, PA
mine cut cushion cut diamond, which is held within a four-prong setting. The stone displays J color and
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Platinum

Natural Blue Aquamarine Gemstone 3.43 cts in 14K White Gold Ring with Diamonds
Located in Los Angeles, CA
3.43 carats Color Light Blue Color intensity Strong Shape Cushion Clarity Very eye clean Cut Brilliant
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

Amethyst Sapphire Diamond Fashion Cocktail Ring
Located in Beverly Hills, CA
90 vibrant pink sapphires weighing 10.89 carats and accented by 86 round brilliant-cut diamonds
Category

21st Century and Contemporary Unknown Contemporary Fashion Rings

Materials

Amethyst, Diamond, White Diamond, Sapphire, Pink Sapphire, Gold, 18k Gol...

French 1930s Art Deco Natural Cornflower Certified Sapphire Diamonds Ring
Located in Poitiers, FR
blue cushion- cut sapphire of more than 10 carats, held in claws. The basket is openwork, art deco
Category

Vintage 1930s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Earrings 18kt Gold Blue Sapphires 3.08 cts Marquise Diamonds 0.53 cts Studs
Located in Miami, FL
earrings. 18kt Yellow Gold with 2 Cushion Blue Sapphires 3.08 carats & 8 Marquise Diamonds 0.53 carats
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Blue Sapphire, Gold

AGL Certified 1.96 Karat Burma Ruby And Diamond Earrings In 18 Karat White Gold
By Rewa Jewellery
Located in Bangkok, TH
. The centre piece is of natural untreated cushion cut Burmese rubies weighing approximately 2.22 carat
Category

2010s Thai Modernist Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold

David Yurman 13.85ctw Blue Topaz and Diamond Ring, SterlingSilver 18k White Gold
By David Yurman
Located in McLeansville, NC
sophistication. Stones: - blue topaz, 1 stone - cushion - 14 mm -13.5 ct - diamonds - round brilliant
Category

2010s Fashion Rings

Materials

Diamond, Topaz, Blue Topaz, 18k Gold, White Gold

Vintage Platinum 8ctw GIA Ruby Diamond Enhancer Pendant Adjustable Necklace
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Ruby - Cushion Cut - Prong Set - Vivid Red Color - 1.80-2.0ct
Category

20th Century Pendant Necklaces

Materials

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

Large Vintage 18k Two Tone Gold 26ctw GIA Aquamarine Diamond Hand Made Brooch
Located in Montclair, NJ
GIA measurements) (8) Natural Genuine Diamonds - Round Brilliant Cut - Prong Set - VS1/VS2 Clarity - F
Category

21st Century and Contemporary Brooches

Materials

Aquamarine, Diamond, Gold, 18k Gold

Burma Pink Spinel 10.53ct Diamond Baguette Cluster Statement Ring in 18K White
Located in Great Neck, NY
, the ring features a suite of exceptionally fine high quality, eye- clean cushion-cut spinels, each
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Spinel, Pink Sapphire, Pink Diamond, White Diamond, Diamond, White Gold,...

3.48ct Madagascar Sapphire and 2.10ct Diamond 18ct White Gold Cluster Ring 1970
Located in Jesmond, Newcastle Upon Tyne
ring. Sapphire Quality Origin Madagascar Colour Blue Cut Cushion Content 3.48 carats Dimensions 8.38mm
Category

20th Century Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Art Deco Light Yellow Diamond Red Ruby Ring 18 Karat Gold Vintage Art Deco Ring
Located in Brooklyn, NY
4.80 grams Center light Yellow Diamond size - 0.61 carat Cushion shape SI Small Diamonds total 0.27
Category

2010s Thai Art Deco Cocktail Rings

Materials

Yellow Diamond, Ruby, Gold, 18k Gold

Louis Comfort Tiffany Co. Citrine Diamond Platinum 18K Gold Antique Brooch
By Louis Comfort Tiffany
Located in Philadelphia, PA
weighing approximately 4.58 carats - transparent medium yellow Accented by old European cut diamonds bezel
Category

Antique Early 1900s Art Nouveau Brooches

Materials

Citrine, Diamond, Gold, 18k Gold, Yellow Gold, Platinum

Victorian 8.72 CTW Emerald Diamond Silver 14K Yellow Gold Antique Halo Pendant
Located in Philadelphia, PA
double halo surround of old mine cut diamonds Accented by additional diamonds bead set in a row on
Category

Antique 1860s Victorian Pendant Necklaces

Materials

Diamond, Emerald, Gold, 14k Gold, Yellow Gold, Silver, Sterling Silver

Edwardian Ruby Diamond Platinum-Topped 18 Karat Gold Heart Charm
Located in Philadelphia, PA
cut diamonds weighing in total approximately 0.25 carat - H/I color with SI clarity. Tested as
Category

Antique Early 1900s Edwardian Charm Bracelets

Materials

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

Purple Violet Amethyst Emerald Diamond Art Deco Style 14K White Gold Ring
By Unbranded
Located in Oakton, VA
This incredible white gold Art Deco style ring features a cushion cut vivid purple amethyst
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

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

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Cushion Cut Diamond 8 Carat For Sale on 1stDibs

Find the exact cushion cut diamond 8 carat you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect cushion cut diamond 8 carat among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Creating a cushion cut diamond 8 carat has been a part of the legacy of many jewelers, but those produced by Single Stone, Roman Malakov and Mark Broumand are consistently popular. See these pages for a cushion cut iteration of this accessory, while there are also antique cushion cut cut and round cut cut versions available here, too. Most of our cushion cut diamond 8 carat for sale are for women, but there are 469 pieces available to browse for men.

How Much is a Cushion Cut Diamond 8 Carat?

The price for a cushion cut diamond 8 carat starts at $350 and tops out at $2,895,000 with these rings, on average, selling for $15,106.

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.