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Important Engagement Ring, Signed Cartier circa 1990 for Private Sale
By Cartier
Located in London, GB
the colour as E and clarity Internally Flawless. The Round Brilliant cut diamond is flanked by two
Category

21st Century and Contemporary British Engagement Rings

Materials

Diamond, White Gold

Tiffany Co. Platinum and Diamond Round Engagement Ring E VS1 Triple Excellent
By Tiffany Co.
Located in Middletown, DE
Internal Flawless-VS2 carats of diamonds making it a total carat weight of .74 Carats. The center stone is
Category

2010s American Engagement Rings

Materials

White Diamond, Platinum

GIA Certified 4.28 Carat Radiant Fancy Yellow Internally Flawless Diamond Ring
Located in New York, NY
Flawless Diamond Ring GIA graded as Fancy Yellow, Internally Flawless. Set in our signature 3 stone ring
Category

2010s American Three-Stone Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

Colorless and Internally Flawless Diamond Ring
Located in San Francisco, CA
Platinum ring features a 0.69ct Round Brilliant Cut diamond with D color and internally flawless
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

10.11 Carat GIA Cert D Internally Flawless Diamond
By J. Birnbach
Located in New York, NY
This magnificent loose diamond weighs in at 10.11cts. It is a GIA certified, D color, Internally
Category

21st Century and Contemporary Unknown More Jewelry

Materials

Diamond

9.12 Carat "Golconda" Oval Cut D Color Internally Flawless Diamond
By J. Birnbach
Located in New York, NY
A once-in-a-lifetime 9.12 carat Type IIa diamond with D color and Internally Flawless clarity. This
Category

21st Century and Contemporary American Solitaire Rings

Materials

Diamond, White Diamond, Platinum

20.67 Carat Fancy Intense Yellow Internally Flawless Diamond Engagement Ring
Located in New York, NY
Striking 20.67-carat Fancy Intense Yellow / Internally Flawless three stone diamond, flanked by two
Category

2010s American Modern Engagement Rings

Materials

Diamond, 18k Gold, Platinum

7 Carat D Color Internally Flawless Diamond for any High Jewelry Project, GIA
Located in New York, NY
This exquisite Seven carat D color Internally Flawless Oval awaits your commission for the perfect
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Internally Flawless GIA Certified Diamond Art Carved Engagement Ring
By Art Carved
Located in Webster, NY
GIA Internally Flawless diamond mounted in a intricate Art Carved diamond ring. Center Diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold

GIA Certified .90 Carat Round I IF Diamond Solitaire Engagement Ring
Located in Baltimore, MD
GIA Certified .90 Carat Round I Internally Flawless Diamond Solitaire Engagement Ring Size 7.5
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 14k Gold, White Gold

GIA Certified 12.02 Carat Radiant Diamond Engagement Ring Platinum in Stock
Located in Boca Raton, FL
Style: 12.02 Fancy Yellow Internally Flawless Diamond Engagement Ring Main Diamond Details: GIA
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, 18k Gold, Platinum

Gubelin Certified 1.74 Carat No-Heat Burmese Pigeon Blood Ruby and Diamond Ring
Located in New York, NY
all who behold it. Accompanied by two D-color internally flawless diamonds of 0.74 carats, this ring
Category

2010s Burmese Contemporary Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold

All GIA Certified D Internally Flawless Oval Eternity Wedding Band Platinum
By Harbor Diamonds
Located in New York, NY
Carats. Every Diamond is D Color & Internally Flawless Clarity True Perfection!! More GIA Wedding
Category

2010s Contemporary Band Rings

Materials

Diamond, Platinum

Louis Newman Co GIA Certified 5.01 Carat Emerald Cut Diamond Three-Stone Ring
Located in New York, NY
, Internally Flawless diamond at this special price. A 5 carat Emerald Cut Diamond with these specs and no
Category

2010s American Three-Stone Rings

Materials

Diamond, White Diamond, Platinum

Fancy Yellow Diamond Internally Flawless Platinum Ring
Located in Carmel-by-the-Sea, CA
Fancy Yellow Diamond Internally Flawless Platinum Ring
Internally Flawless Fancy Yellow Diamond Ring, 10.67 Carat
Located in New Orleans, LA
" and internally flawless, meaning its brilliant color is unmarred by any imperfection. Yellow diamonds
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

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

Internally Flawless Light Blue Diamond Ring, 2.43 Carat
Located in New Orleans, LA
natural fancy light blue and internally flawless, meaning it is unmarred by any imperfection. In every
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Blue Diamond, Pink Diamond, 18k Gold, Rose Gold

Internally Flawless Fancy Yellow Diamond Ring, 10.67 Carat
Located in New Orleans, LA
" and internally flawless, meaning its brilliant color is unmarred by any imperfection. Yellow diamonds
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold, Gold Plate

Internally Flawless GIA Certified 4.65 Carat Oval Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
carat oval diamond! it is internally flawless clarity without any inclusions this characteristic offers
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold

8.04ct Emerald-Cut Diamond F-Color Internally Flawless Ring
Located in Palm Beach, FL
report certificate numbered 2205026190, stating the diamond has F-color and Internally Flawless-clarity
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Internally Flawless Natural Light Blue Diamond Ring, 2.43 Carats
Located in New Orleans, LA
Internally Flawless. True miracles of nature, blue diamonds are among the rarest and most desirable colored
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Rose Gold, Platinum

Internally Flawless Cushion Cut 2.85 Carat Diamond Platinum Ring
Located in San Francisco, CA
Cushion Cut 2.85ct Diamond accented by 60 Round Cut Diamonds weighing approximately .58ct, in a
Category

21st Century and Contemporary More Rings

Materials

Diamond, Platinum

5.71 Carat GIA Internally Flawless Emerald Cut Diamond Platinum Ring
By J. Birnbach
Located in New York, NY
Internally Flawless clarity. The flawless stone is flanked by two trapezoid-cut diamonds totaling 1.18 carats
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

Internally Flawless 3.07 Carat Radiant Diamond Platinum Engagement Ring GIA
By J. Birnbach
Located in New York, NY
, which states that the center diamond has F color and Internally Flawless clarity.
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified Internally Flawless 1.35CTW Asscher Cut Diamond Platinum Ring
Located in Webster, NY
Elegant GIA Certified Internally Flawless Asscher cut diamond engagement ring with Pear Diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Marquise-Cut Golconda Diamond Ring 8.03 Carats
Located in New Orleans, LA
The extremely rare and highly important Internally Flawless diamond in this ring boasts all the
Category

20th Century Solitaire Rings

Materials

Diamond, Platinum

Harry Winston 7.74 Carat Internally Flawless Emerald Cut Diamond Ring
By Harry Winston
Located in Greenwich, CT
This extraordinary emerald cut vintage Harry Winston diamond engagement ring is internally flawless
Category

Vintage 1950s American Contemporary Engagement Rings

Materials

White Diamond, Platinum

Internally Flawless Cushion Cut 2.85 Carat GIA Diamond Platinum Ring
Located in San Francisco, CA
A truly extraordinary ring! An extremely rare Internally Flawless Cushion Cut weighing 2.85 carats
Category

21st Century and Contemporary North American Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA Certified Internally Flawless Cartier Diamond Engagement Ring in Platinum
By Cartier
Located in London, England
certified as a 0.73 carat stone, assessed as F in colour and is Internally Flawless (GIA report: 1119913724
Category

2010s Unknown Modern Engagement Rings

Materials

Diamond, Platinum

GIA Internally Flawless 18k White Gold Diamond Pendant Necklace 0.85ctw
Located in Tustin, CA
Flawless round brilliant cut diamond set in a 18k white gold pendant accented by and estimated 0.39ctw
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Internally Flawless D Color GIA Certified 4.01 Carat Diamond Studs
By Antinori Fine Jewels
Located in Chicago, IL
IF clarity D color Excellent cut diamond studs 4.01 total carat weight
Category

2010s Italian Modern Stud Earrings

Materials

Diamond, White Diamond

GIA Certified 3.81 Carat Heart Shape Diamond Studs INTERNALLY FLAWLESS VS
By Antinori Fine Jewels
Located in Chicago, IL
Internally Flawless in clarity and the other 1.90 carats H Color VS Clarity
Category

2010s Italian Modern Stud Earrings

Materials

Diamond, White Diamond

7 carat Vivid Yellow Asscher Ring Internally Flawless
By J. Birnbach
Located in New York, NY
Rare and Fabulous, this 7.06 carat Fancy Vivid Yellow Asscher Cut Diamond is Internally Flawless
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Platinum, 18k Gold

GIA Certified 5 Carat Round Brilliant Cut Diamond Ring Internally Flawless
By Antinori Fine Jewels
Located in Chicago, IL
GIA Certified 5 Carat Round Brilliant Cut Diamond Ring FLAWLESS Clarity G color excellent polish
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold

Graff Internally Flawless D Color 5.01 Carat Cushion Cut Diamond Ring
By Graff
Located in Greenwich, CT
This is as good as it gets! A cushion brilliant cut internally flawless D color diamond ring
Category

Early 2000s American Contemporary Engagement Rings

Materials

White Diamond, Platinum

Art Deco Diamond Ring D Color, IF Internally Flawless , circa 1935
Located in London, GB
(Internally Flawless) clarity, with a weight of 1.12 carats, in an open back corner claw setting, flanked by
Category

Vintage 1930s Three-Stone Rings

Materials

Diamond, Platinum

3.04 Carat D-Internally Flawless Radiant Diamond Platinum Ring, GIA Certified
Located in Beverly Hills, CA
D color grade and IF (internally flawless) clarity grade making this diamond extremely pure, clean
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

GIA Certified Art Deco Style 4.13ct Internally Flawless Marquise Diamond Ring
Located in London, England
internally flawless (certificate report number: 2155559366). Considering the sheer size of the marquise
Category

Early 2000s British Art Deco Engagement Rings

Materials

Diamond, Platinum

7.13ct Light Yellow Oval Internally Flawless GIA Ring
By Rare Colors
Located in New York, NY
diamonds
Category

2010s American Cocktail Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

INTERNALLY FLAWLESS Clarity D Color GIA Certified 2.40Emerald Cut Diamond Plat
By Antinori Fine Jewels
Located in Chicago, IL
certified 2.40 carat pure IF clarity D color excellent cut natural earth mined diamond is just the best
Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, Emerald, Platinum

2.34 Carat Very Light Pink Radiant Diamond Internally Flawless in Platinum, GIA
Located in New York, NY
a 2.34 carat Very light pink radiant cut and is Internally Flawless. It is set in platinum and rose
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Pink Diamond, Platinum

5.71 Ct GIA E Internally Flawless Emerald Cut Diamond Platinum J Birnbach Ring
By J. Birnbach
Located in New York, NY
Internally Flawless clarity. The flawless stone is flanked by two trapezoid-cut diamonds totaling 1.18 carats
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

5 Carat Marquise Diamond D Color Internally Flawless Type IIa GIA Ring / Pendant
Located in New York, NY
5 carat Marquise Diamond D color Internally Flawless Type IIa beautifully cut and ready for us to
Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Gold, Platinum

Beauvince GIA 2.00 Carat Round H Internally Flawless Engagement Ring
By Beauvince Jewelry
Located in New York, NY
This stunning 2.00 ct H IF GIA certified Round Brilliant Cut Diamond Ring is all the bang for the
Category

2010s Engagement Rings

Materials

Diamond, White Diamond, White Gold, 18k Gold

GIA Certified 6.69 Carat Internally Flawless Fancy Yellow Three-Stone Ring
Located in New York, NY
Here we have an extremely hard to find Radiant Cut 6.69 carats Fancy Yellow in color and Internally
Category

2010s American Modern Three-Stone Rings

Materials

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

Platinum Ring Original Tiffany Co. Cushion 0.59 Carat F Internally Flawless
By Tiffany Co.
Located in Los Angeles, CA
, Internally Flawless center Cushion. Original paperwork is included.
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

Graff GIA Certified Internally Flawless 5.08 Carat Emerald Cut Engagement Ring
By Graff
Located in Miami, FL
, showcases a spectacular GIA Certified Emerald Cut Diamond weighing 5.08 carats, D color, Internally Flawless
Category

Early 2000s British Modern Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. 1.39 Ct G, IF Internally Flawless 3x Excellent Engagement Ring
By Tiffany Co.
Located in New York, NY
1.39 ct Center graded with a G color and Internally Flawless (IF) clarity grade, Triple Excellent Cut
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

J. Birnbach GIA 3.03 Carat E Internally Flawless Oval in 18kt Yellow Gold Ring
By J. Birnbach
Located in New York, NY
This classy J. Birnbach solitaire ring features a 3.03 carat Oval Cut GIA Certified diamond with E
Category

2010s American Modern Engagement Rings

Materials

Diamond, Yellow Gold

Flawless Diamond Set in a Three-Stone Engagement Ring
By Jewels By Viggi
Located in Palm Beach, FL
diamond GIA certified Internally flawless clarity. The center diamond is flanked by two Emerald-cut
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

Emilio Jewelry 3.10 Carat GIA Certified Natural Flawless Pink Diamond Ring
By Emilio!
Located in New York, NY
Internally Flawless Pink Diamond! Please contact us for the GIA report. Total weight: 3.10ct tw Please
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, Pink Diamond, 18k Gold

Platinum Three Stone GIA Certified Flawless Fancy Yellow Diamond Engagement Ring
Located in Los Angeles, CA
% Iridium Stones-GIA Certified Internally Flawless Fancy Yellow Cushion Cut Diamond 1.35 Carats, Two Side
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold, Yellow Gold, Platinum

Vivid Diamonds GIA Certified 15.18 Carat Emerald Cut Diamond Eternity Band
By Vivid Diamonds
Located in Miami, FL
emerald cut diamonds weighing 15.18 carats total, G-H color, Internally Flawless-VVS2 clarity. Each
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Platinum

Harry Winston Magnificent 22.91 ct GIA Cert. D Color Flawless emerald cut ring
By Harry Winston
Located in New York, NY
Flawless emerald-cut diamond. This amazing stone is one of the best cut diamonds we have ever had the
Category

20th Century American Engagement Rings

Materials

Diamond, White Diamond, Platinum

Fancy Colored Diamond Earrings
Located in Weston, MA
and fancy grey. 0.60 inches in diameter Mounted in 18k yellow gold Includes one internally flawless
Category

Late 20th Century Contemporary Stud Earrings

Materials

Diamond, White Diamond, Blue Diamond, Yellow Diamond, Pink Diamond, Brow...

Asscher Cut Three Diamond Platinum Drop Pendant Necklace GIA Certified Diamonds
Located in Boca Raton, FL
G/VS1, the .77 carat diamond is graded G color Internally Flawless clarity, the third diamond weighs
Category

21st Century and Contemporary American Modern Drop Necklaces

Materials

Diamond, Platinum

Emerald Cut Diamond Engagement Ring
Located in Beverly Hills, CA
This classic engagement ring features a GIA certified E color and Internally Flawless emerald cut
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 18k Gold

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Internally Flawless Diamond For Sale on 1stDibs

You are likely to find exactly the internally flawless diamond you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using Platinum, Gold and 18k Gold. Find an antique version now, or shop for 13 vintage or 115 modern creation for a more contemporary example of these cherished accessories. Finding the perfect internally flawless 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 accessory, there are many different carat weights to choose from, but 1 Carat and 1.5 Carat versions are of considerable interest. An internally flawless diamond from Antinori Fine Jewels, J. Birnbach and Tiffany Co. — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for a round cut iteration of this accessory, while there are also emerald cut cut and oval cut cut versions available here, too. If you’re browsing our inventory for an internally flawless diamond, 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 Internally Flawless Diamond?

Prices for an internally flawless diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $2,200 and can go as high as $3,200,000, while this accessory, on average, fetches $49,579.

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 Internally Flawless Diamond
  • An internally flawless diamond is a diamond that does not have any visible inclusions under a 10x magnification.
  • 1stDibs ExpertApril 5, 2022
    A flawless diamond is a diamond that has no inclusions or blemishes visible under 10X magnification. Flawless diamonds are incredibly rare because all naturally occurring diamonds will have inclusions. Shop a collection of diamond jewelry on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    It is impossible to say the exact number of Flawless diamonds that are in existence. However, diamonds with the Flawless clarity rating are extremely rare. This category consists of around only a half a percent of diamonds in existence. On 1stDibs, find an array of authentic Flawless diamond pieces.
  • 1stDibs ExpertFebruary 13, 2023
    Yes, flawless diamonds are more expensive than diamonds with imperfections. Flawless diamonds have no visible inclusions and the surface of these precious stones is free of blemishes. Flawless diamonds are considered to be rare and of higher quality, which renders them more valuable. The 4Cs, the grading system that was established by the Gemological Institute of America (GIA) in the 1950s, are the guidelines that determine how flawless diamonds are graded. Find diamond jewelry on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    A D flawless diamond is a diamond gemstone of exceptional quality. Gems worthy of the title have the best possible color and clarity grades. Expert gemologists working in third-party laboratories provide the ratings for gemstones. Shop a range of diamond gemstone jewelry on 1stDibs.