Skip to main content

Fancy Diamond 7 Carat

34
to
247
1,145
100
1,166
544
312
116
84
64
52
33
20
20
19
18
18
18
17
12
12
9
7
4
3
2
2
1
1
1
95
16
16
16
13
Sort By
GIA Certified 7 Carat Fancy Yellow Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
Amazing ring with 7 carat diamond. Setting in solid 18k yellow gold. Designer: Antinori Material
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold

Vivid Diamonds 26.03 Carat GIA Graded Fancy Color Diamond Platinum Necklace
By Vivid Diamonds
Located in Miami, FL
brilliant cut diamonds weighing 4.77cts with 7 round brilliant cut natural fancy brown and yellow diamonds
Category

21st Century and Contemporary American More Necklaces

Materials

Diamond, Yellow Diamond, Brown Diamond, Platinum

GIA Certified 7 Carat Radiant Cut Fancy Yellow Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
masterpiece features a magnificent 7-carat Radiant Cut Fancy Yellow diamond, certified by GIA to ensure its
Category

2010s Italian Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold

Scarselli 7 Carat Fancy Intense Yellow Diamond Ring in Platinum
By SCARSELLI
Located in New York, NY
From SCARSELLI, this spectacular 7 carat Fancy Intense Yellow Diamond, with a halo of round white
Category

2010s American Contemporary Bridal Rings

Materials

White Diamond, Yellow Diamond, 18k Gold, Platinum

GIA Certified 7 Carat Fancy Intense Yellow Radiant Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
Experience the exquisite beauty of this GIA-certified 7-carat Fancy Intense Yellow Radiant Diamond
Category

2010s Unknown Modern Solitaire Rings

Materials

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

GIA Certified 7 Carat Fancy Intense Yellow Diamond Solitaire Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
This stunning engagement ring boasts a magnificent centerpiece: a GIA certified 7 carat fancy
Category

2010s Unknown Contemporary Engagement Rings

Materials

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

Fancy Yellow Radiant Cut Eternity Band 7 Carats
By Belfiore Jewelry
Located in Great Neck, NY
Fancy yellow radiant cut diamonds set in 18K yellow gold. The total carat weight of the ring is
Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Yellow Diamond, 18k Gold

Canadian GIA Certified Fancy Intense Yellow 7 Carat Emerald Cut Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
An exquisite 7 carat fancy intense yellow 10 carat emerald cut diamond ring set in platinum and 18
Category

2010s Italian Modern Solitaire Rings

Materials

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

5.24 Carats Fancy Yellow and White Diamonds Gold Platinum Flower Ring
By Diamond Stars Jewelry, Inc.
Located in New York, NY
Carats in Natural Fancy Yellow Diamonds VS Clarity There are 1.78 Carats in White Diamonds F VS The ring
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

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

GIA Certified Fancy Intense Yellow 7 Carat Radiant Cut Diamond Ring in 18k Gold
By Gad & Co.
Located in Miami, FL
7 carat fancy intense yellow radiant cut diamond set with over 2 carats in white and yellow
Category

2010s Art Nouveau Engagement Rings

Materials

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

14K Yellow Gold Fancy 3.0 Carat Diamond S Style Tennis Bracelet 7"
Located in San Jacinto, CA
carats in weight, carefully set in a classic S-shaped pattern. Each diamond is meticulously chosen for
Category

2010s Unknown Modern Tennis Bracelets

Materials

Diamond, 14k Gold, Yellow Gold

Afarin Collection 5 Row Fancy 7 carat Diamond Bracelet set in 18K White Gold
Located in Los Gatos, CA
carat diamonds set in pristine 18K white gold. This glamorous piece features 849 round brilliant
Category

21st Century and Contemporary Italian Art Deco Retro Bracelets

Materials

Diamond, 18k Gold, White Gold

14K Rose Gold 5 7/8 Carat Fancy Diamond Cushion Shape Triple Halo Stud Earring
Located in New York, NY
astonishing 5 7/8 Cttw of Fancy Color Rose Cut Diamonds, meticulously arranged in a Cushion Shape Triple Halo
Category

21st Century and Contemporary Indian Modern Stud Earrings

Materials

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

14K Rose Gold 5 7/8 Carat Fancy Diamond Cushion Shaped Triple Halo Stud Earring
Located in New York, NY
Square Stud Earrings, adorned with a dazzling array of 202 natural diamonds. With a total weight of 5 7/8
Category

21st Century and Contemporary Indian Modern Stud Earrings

Materials

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

Emilio Jewelry 5.92 Carat Fancy Diamond Bracelet
By Emilio!
Located in New York, NY
Diamonds: 5.92 carats mixed shapes including princess cut, marquise, round, and baguette diamonds to create
Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, White Diamond, 18k Gold

NO RESERVE! 1.01Ct Fancy Diamonds Eternity Band - 14 kt. Rose gold - Ring
By Diamonds Mine
Located in Ramat Gan, IL
Size: 56 EU / 16 IT / 7 1/2 US Center Stone: ___________ Natural Diamond Cut: Round Brilliant Cut
Category

2010s Israeli Art Deco Wedding Rings

Materials

Diamond, Pink Diamond, 14k Gold, Rose Gold

0.31 Carat Fancy Yellow diamond ring
Located in Kowloon, HK
**100% NATURAL FANCY COLOUR DIAMOND JEWELRY** ✪ Jewelry Details ✪ ♦ MAIN STONE DETAILS ➛ Stone
Category

2010s Asian Fashion Rings

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold

Afarin Collection 5 Row Fancy 7 Carat Diamond Bracelet Set in 18k White Gold
Located in Los Gatos, CA
white gold, crafted to perfection. Set in 5 rows, this glamorous piece features 7 carats of dazzling
Category

21st Century and Contemporary Italian Art Deco Tennis Bracelets

Materials

Diamond, 18k Gold, White Gold

Fancy Shape Multicolor Diamond 10.56 Carat Fashion Bracelet
Located in New York, NY
perfection between white and color diamonds. The white princess cut diamond weighs 4.64 carats and the fancy
Category

21st Century and Contemporary American Modern Link Bracelets

Materials

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

Fancy Shape Multicolor Diamond 10.56 Carat Fashion Bracelet
Fancy Shape Multicolor Diamond 10.56 Carat Fashion Bracelet
Free Shipping
H 0.14 in D 0.15 in L 0.28 in
Louis Newman 7 Co GIA Certified 15.06 Carat Fancy Yellow Three-Stone Ring
Located in New York, NY
Center stone is a Radiant cut Diamond weighing 15.06 carats GIA certified Fancy Yellow SI1 clarity
Category

2010s American Three-Stone Rings

Materials

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

Fancy Vivid Yellow Diamond Mesh Bracelet, 28.40 Carats
Located in New Orleans, LA
This exquisite bracelet includes an array of beautifully matched fancy vivid yellow diamonds
Category

21st Century and Contemporary Modern Modern Bracelets

Materials

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

Fancy Light Yellow Diamond Ring 3.01 Carat GIA Certified
By Tamir
Located in Beverly Hills, CA
Supreme 3.01 carat G.I.A certified Fancy Light Yellow diamond cushion cut, VS1 clarity, surrounded
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Yellow Diamond, Multi-gemstone, 18k Gold, Yellow...

2.77 Carat Fancy Brown Champagne Natural Diamond Engagement Ring
By DGI
Located in Los Angeles, CA
This beauty has a deep Brown/Champagne colored natural Pear Cut Diamond that weighs 1.68 Carats. It
Category

2010s American Contemporary Cocktail Rings

Materials

Brown Diamond, Diamond, 14k Gold, Yellow Gold

GIA 2.00 Carat Fancy Color Diamond Platinum Three Stone Ring
Located in Beverly Hills, CA
One GIA 2.00 Carat Fancy Color Diamond Platinum Three Stone Ring. Featuring one GIA regular step
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Yellow Diamond, Brown Diamond, Platinum

GIA Certified 7 Carat Pear Cut Diamond Dangle Platinum Earrings
By Antinori Fine Jewels
Located in Rome, IT
, natural fancy color diamonds and high jewels all made in Italy. GIA Certified 7 Carat Pear Cut Diamond
Category

2010s Italian Modern Dangle Earrings

Materials

Diamond, White Diamond, Platinum

2 Carat Marquise Fancy Greenish Brown, Cognac Diamond Cocktail Ring
By Joke Quick
Located in Antwerp, BE
One of a kind ring in 18K Yellow & white gold 7 g. Set with a Fancy greenish brown, 2 ct. Marquise
Category

2010s Belgian Contemporary Fashion Rings

Materials

Diamond, Yellow Diamond, Brown Diamond, 18k Gold

3.54 Carat Multi Shaped Fancy Yellow Diamond Ring
By Diana M. Jewels
Located in New York, NY
18KT two tone multi shaped fancy yellow diamond ring with 3.54 carats of five yellow diamonds and
Category

21st Century and Contemporary American Fashion Rings

Materials

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

GIA Certified 11.22 Carat Radiant Fancy Intense Yellow Diamond Ring
Located in Boca Raton, FL
GIA Certified 11.22 Carat Radiant Fancy Intense Yellow Diamond Ring A spectacular 11.22 carat
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Yellow Diamond, Platinum

0.50 Carat Fancy Intense Yellow Diamond Cluster Wedding Engagement Ring
Located in London, GB
approximately • Colour: Fancy Intense Yellow • Clarity: VS2 Others: 28 round diamonds • Total carat weight
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold

Alexander GIA 2.58 Carat Fancy Light Yellow Diamond 18k Ring
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Lovely yellow diamond with halo ring, by Alexander Beverly Hills. 3.08 carats total diamond weight
Category

2010s American Modern Engagement Rings

Materials

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

Emilio Jewelry Special 3.21 Carat Fancy Cut Diamond Huggie Earrings
By Emilio!
Located in New York, NY
Approx. 3.21 carats total weight diamonds.The finest conflict free diamonds set in our unique
Category

21st Century and Contemporary American Stud Earrings

Materials

Diamond, White Diamond, 18k Gold

Fancy Yellow Diamond Cocktail Ring 6.31 Carats 18k Gold
Located in Laguna Niguel, CA
GIA G.G. Total Carat Weight of Diamonds is 6.31 Carats Metal is 18K Gold Ring Size = 7 US It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Fancy Yellow Diamond Cocktail Ring 6.31 Carats 18k Gold
Located in Laguna Niguel, CA
GIA G.G. Total Carat Weight of Diamonds is 6.31 Carats Metal is 18K Gold Ring Size = 7 US It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

3.95 Carat Multi Shaped Fancy Yellow Diamond Ring
By Diana M. Jewels
Located in New York, NY
18KT two tone multi shaped fancy yellow diamond ring with 3.95 carats of five yellow diamonds and
Category

21st Century and Contemporary American Fashion Rings

Materials

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

0.87 Carat Natural Fancy Yellow Diamond Engagement Ring White Gold
By DGI
Located in Los Angeles, CA
This beauty has a Natural Marquise Cut Yellow Diamond that weighs 0.47 Carats. It is surrounded
Category

2010s American Contemporary Engagement Rings

Materials

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

Fancy Yellow Diamond Cocktail Ring 6.31 Carats 18k Gold
Located in Laguna Niguel, CA
GIA G.G. Total Carat Weight of Diamonds is 6.31 Carats Metal is 18K Gold Ring Size = 7 US It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Fancy Yellow Diamond Cocktail Ring 6.31 Carats 18k Gold
Located in Laguna Niguel, CA
GIA G.G. Total Carat Weight of Diamonds is 6.31 Carats Metal is 18K Gold Ring Size = 7 US It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Fancy Yellow Diamond Cocktail Ring 6.31 Carats 18k Gold
Located in Laguna Niguel, CA
GIA G.G. Total Carat Weight of Diamonds is 6.31 Carats Metal is 18K Gold Ring Size = 7 US It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

2.09 Carat Fancy Color Diamond 18 Karat White Gold Cocktail Ring
By DGI
Located in Los Angeles, CA
7 Fancy Color Cushion Cuts weigh 1.49 Carats. It is embellished with 9 Yellow Round Cut Diamonds
Category

2010s American Contemporary Cocktail Rings

Materials

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

4.13ctw Fancy Diamond Link Bracelet, 14K White Gold, Length 7 Inches, Statement
Located in McLeansville, NC
A 14 karat white gold fancy diamond link bracelet. This statement diamond bracelet features flat
Category

Early 2000s Link Bracelets

Materials

Diamond, 14k Gold, White Gold

2.86 Carat Fancy Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This stunning ring has been crafted from 18-karat gold. It is set with 2.86 carats fancy diamonds
Category

21st Century and Contemporary Unknown Modern Cocktail Rings

Materials

Diamond, Gold, 18k Gold

Diamond Ring with 1.1 Carat Central Diamond Fancy Yellowish Brown
Located in Paris, FR
Diamond-shaped ring holding a 1.01 round fancy yellowish brown diamond in an entourage of 14
Category

Early 2000s French Bridal Rings

Materials

Diamond, 18k Gold, White Gold

2.20 Carat Natural Fancy Colored Diamond Cluster Ring
Located in New York, NY
Made of 18k white gold, this ring is centered with a stunning natural fancy orange brown colored
Category

20th Century Cluster Rings

Materials

Diamond, 18k Gold, White Gold

0.73 Carat Fancy Orangy Pink Diamond Earrings GIA Certified
Located in Kowloon, HK
**100% NATURAL FANCY COLOUR DIAMOND JEWELRY** ✪ Jewelry Details ✪ ♦ MAIN STONE DETAILS Diamond 1
Category

2010s Asian Drop Earrings

Materials

Diamond, White Diamond, Pink Diamond, 18k Gold, White Gold

1.04 Carat Fancy Brownish Pink Diamond Ring VS2 Clarity
Located in Kowloon, HK
**100% NATURAL FANCY COLOUR DIAMOND JEWELRY** ✪ Jewelry Details ✪ ♦ MAIN STONE DETAILS ➛ Stone
Category

2010s Asian Bridal Rings

Materials

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

Vintage 2.06 Carats Diamond & Fancy Colored Diamond Platinum Three Stone Ring
Located in Philadelphia, PA
Centering a round brilliant cut fancy colored diamond weighing 0.72 carat Fancy deep brownish
Category

Vintage 1950s Three-Stone Rings

Materials

Diamond, White Diamond, Brown Diamond, Platinum

2.32 Carat Fancy Color Diamond 18 Karat White Gold Cocktail Ring
By Roshe Jewels
Located in Los Angeles, CA
2.26 Carat Fancy Color Diamond 18 Karat White Gold Cocktail Ring This magnificent beauty has Fancy
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

White Diamond, Brown Diamond, Yellow Diamond, Diamond, White Gold, 18k G...

Vintage GIA 2.72 Carat Fancy Brown-Yellow Pear Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Vintage GIA 2.72 Carat Fancy Brown-Yellow Pear Cut Diamond Platinum Ring. Featuring one GIA
Category

1990s Engagement Rings

Materials

Diamond, White Diamond, Brown Diamond, Platinum

1.52 Carat Fancy Natural Champagne Diamond 14 Karat White Gold Ring
By Roshe Jewels
Located in Los Angeles, CA
diamond is a natural, fancy colored Oval cut Brown/Champagne Diamond weighing 1.01 Carats. The ring is
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Brown Diamond, White Gold, 14k Gold

GIA Certified 1.46 Carat Fancy Orangy Pink Diamond Ring
Located in Kowloon, HK
**100% NATURAL FANCY COLOUR DIAMOND JEWELRY** ✪ Jewelry Details ✪ ♦ MAIN STONE DETAILS ➛ Stone
Category

2010s Asian Bridal Rings

Materials

Pink Diamond, White Diamond, Diamond, White Gold, 18k Gold

Modern 18.72 Carat Natural Fancy Yellow Diamond 18 Karat Gold Bracelet
Located in Miami, FL
color, VS1-VS2 clarity, and 112 Natural genuine fancy intense yellow hexagon shape diamonds approx
Category

21st Century and Contemporary Modern Tennis Bracelets

Materials

Diamond, Yellow Diamond, 18k Gold, Gold

Fancy Light Yellow Diamond Ring 3.78 Carat Radiant Cut GIA Certified
By Tamir
Located in Beverly Hills, CA
State of the art platinum and 18K yellow gold ring, centered by an exceptional 3.78 carat Fancy
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Yellow Diamond, Multi-gemstone, 18k Gold, Yellow...

AGL Certified 2.28 Carat Fancy Pink & Green Diamond Ring
Located in Kowloon, HK
**100% NATURAL FANCY COLOUR DIAMOND JEWELRY** ✪ Jewelry Details ✪ ♦ MAIN STONE DETAILS ➛ Stone
Category

2010s Asian Wedding Rings

Materials

Diamond, Pink Diamond, 18k Gold, White Gold

3.03 carat Fancy color Diamond White Gold 18K Ring
Located in Geneva, CH
3.03 carat Fancy dark Orangy Brown Natural Diamond centering a white diamond and gold 18K ring
Category

1990s Contemporary Dome Rings

Materials

Diamond, 18k Gold, White Gold

1.19 Carat Fancy Colored Diamond 14 Karat Rose Gold Cocktail Ring
By Roshe Jewels
Located in Los Angeles, CA
This magnificent beauty has 10 fancy color round cut natural diamonds that weigh 0.65 Carats. It is
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Yellow Diamond, Brown Diamond, Gold, 14k Gold, R...

2.01 Carat Fancy Diamond 18 Karat Gold Ring
By Meghna Jewels
Located in Hoffman Estate, IL
This ring has been meticulously crafted from 18-karat gold. It is set with 2.01 carats diamonds
Category

21st Century and Contemporary Unknown Modern Cocktail Rings

Materials

Brown Diamond, Gold, 18k Gold, Yellow Gold

Fancy Light Yellow Diamond Ring 3.01 Carat Cushion Cut GIA Certified
By Tamir
Located in Beverly Hills, CA
Notable 3.01 carat cushion cut, Fancy Light Yellow diamond, VS1 clarity, surrounded by an array of
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Yellow Diamond, Multi-gemstone, Diamond, White Diamond, 18k Gold, Yellow...

Michael Beaudry 3.95 Carat Natural Fancy Yellow Diamond Platinum Gold Bracelet
By Michael Beaudry
Located in Stamford, CT
Platinum tubes accented with 6 radiant cut natural fancy yellow diamonds set in 18k yellow gold frames. 30
Category

21st Century and Contemporary Modern Bracelets

Materials

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

Fancy Light Yellow Diamond Ring 3.78 Carat Radiant Cut GIA Certified
By Tamir
Located in Beverly Hills, CA
State of the art platinum and 18K yellow gold ring, centered by an exceptional 3.78 carat Fancy
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Multi-gemstone, Yellow Diamond, White Diamond, Diamond, Platinum, Yellow...

1.75 Carat Round Cut Fancy Color Diamond White Gold Ring 14k
Located in Great Neck, NY
1.75 Carats round diamond set on a 6 prong white gold 14 Karat solitaire Ring. Natural Fancy Dark
Category

2010s American Solitaire Rings

Materials

Diamond, 14k Gold, White Gold

  • 1
  • ...
Get Updated with New Arrivals
Save "Fancy Diamond 7 Carat", and we’ll notify you when there are new listings in this category.

Fancy Diamond 7 Carat For Sale on 1stDibs

Find the exact fancy diamond 7 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 yellow gold — can elevate any look. Our collection of these items for sale includes 476 vintage editions and 915 modern creations to choose from as well. You’re likely to find the perfect fancy diamond 7 carat among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. There have been many well-made iterations of the classic fancy diamond 7 carat over the years, but those made by Alexander Beverly Hills, DGI and Meghna Jewels are often thought to be among the most beautiful. A round cut version of this piece has appeal, but there are also cushion cut and oval cut versions for sale. If you’re browsing our inventory for a fancy diamond 7 carat, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Fancy Diamond 7 Carat?

Prices for a fancy diamond 7 carat can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $2,800,000, while this accessory, on average, fetches $8,098.
Questions About Fancy Diamond 7 Carat
  • 1stDibs ExpertAugust 17, 2021
    A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.
  • 1stDibs ExpertAugust 17, 2021
    A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.