The Most Perfect Diamond: A Ranking of Exceptional Gems

Choose the diamond you think is the most perfect!

Author: Gregor Krambs
Updated on Apr 17, 2024 06:45
Discover the dazzling world of diamonds and join us on a glittering quest to determine the most perfect diamond ever! At StrawPoll, we're hosting an exclusive ranking of these breathtaking gems, and we're calling on you, our brilliant connoisseurs, to lend your expertise and vote for your favorite. From mesmerizing cuts, to scintillating colors, and awe-inspiring carats, it's time to let your passion for these timeless treasures shine. Can't find your top choice in our sparkling selection? Fret not, for you can suggest a missing option and make your mark in this illustrious pursuit. So, what are you waiting for? Embark on this shimmering journey with us and let's unearth the ultimate diamond that outshines them all!

What Is the Most Perfect Diamond?

  1. 1

    The Cullinan Diamond

    Thomas Cullinan
    The largest rough diamond ever found, weighing 3,106 carats. It produced several polished diamonds, including the Cullinan I, also known as the Star of Africa, which is the largest clear cut diamond in the world.
    The Cullinan Diamond is one of the most remarkable and well-known diamonds in the world. It was discovered in 1905 at the Premier Mine in South Africa. The diamond was named after Thomas Cullinan, the mine's owner. This extraordinary diamond weighed a staggering 3,106 carats in its rough form, making it the largest rough diamond ever found. The Cullinan Diamond showcases exceptional clarity and color, which adds to its breathtaking beauty. It has become a symbol of luxury and elegance.
    • Weight: 3,106 carats
    • Clarity: Internally flawless
    • Color: White
    • Cut: Assorted polished diamonds, including the Great Star of Africa and the Lesser Star of Africa
    • Size: The Great Star of Africa: 530.2 carats (largest polished diamond), The Lesser Star of Africa: 317.4 carats
    The Cullinan Diamond in other rankings
  2. 2
    A 106-carat diamond with a rich history, it has been owned by various rulers and countries over the centuries. It is now part of the British Crown Jewels.
    The Koh-i-Noor Diamond is a famous and highly prized diamond with a rich and intriguing history. It is regarded as one of the most beautiful diamonds in the world, known for its exceptional clarity, size, and brilliance. The name 'Koh-i-Noor' translates to 'Mountain of Light' in Persian, perfectly capturing the mesmerizing qualities of this remarkable gem.
    • Weight: 105.6 carats
    • Color: Colorless, with a slight tint of pale yellow
    • Clarity: Internally flawless
    • Cut: Oval brilliant-cut
    • Dimensions: 3.6 cm x 3.2 cm x 1.3 cm
    The Koh-i-Noor Diamond in other rankings
  3. 3
    A 45.52-carat blue diamond, it is known for its unique color and history of being cursed. It is now part of the Smithsonian's National Museum of Natural History.
    The Hope Diamond is one of the most famous and beautiful diamonds in the world. It is a large, blue diamond known for its exceptional size, color, and historical significance.
    • Weight: 45.52 carats
    • Color: Fancy Dark Grayish Blue
    • Cut: Cushion Antique Brilliant with a French cut pavilion
    • Clarity: VS1
    • Dimensions: 25.60 mm x 21.78 mm x 12.00 mm
    The Hope Diamond in other rankings
  4. 4
    A 59.60-carat pink diamond, it is the largest internally flawless fancy vivid pink diamond ever graded by the Gemological Institute of America.
    The Pink Star Diamond is a mesmerizing gemstone recognized as one of the most perfect diamonds in the world. It is a stunning pink diamond, known for its exceptional size and extraordinary color.
    • Color: Fancy Vivid Pink
    • Carat Weight: 59.60 carats
    • Cut: Oval Brilliant
    • Clarity: Internally Flawless
    • Shape: Mixed Oval
  5. 5
    A 5.11-carat red diamond, it is the largest known red diamond in the world. It has a unique and rare color that is highly sought after.
    The Moussaieff Red Diamond is one of the most magnificent and rare gemstones in the world. It is a fancy red diamond, famed for its intense and vivid red color, which is exceptionally rare in diamonds. The diamond exhibits a mesmerizing beauty and is considered a true marvel of nature.
    • Weight: 5.11 carats
    • Color: Fancy Red
    • Shape: Triangular Brilliant Cut
    • Clarity: Internally Flawless
    • Origin: Unknown
    The Moussaieff Red Diamond in other rankings
  6. 6
    The Wittelsbach-Graff Diamond
    Physolamuse · Public domain
    A 31.06-carat blue diamond, it was once owned by the Bavarian royalty and later sold to a private collector. It has a rare and distinct blue color.
    The Wittelsbach-Graff Diamond is a famous blue diamond renowned for its exceptional beauty and historical significance. It is one of the largest historic diamonds ever discovered and holds a captivating charm.
    • Weight: 31.06 carats
    • Cut: Oval-shaped brilliant cut
    • Color: Fancy deep grayish-blue
    • Clarity: Internally flawless
    • Origin: Possibly from the Kollur mine in Golconda, India
    The Wittelsbach-Graff Diamond in other rankings
  7. 7
    A 603-carat rough diamond, it produced several polished diamonds including the Lesotho Promise, a 75.36-carat diamond with a unique and rare color.
    The Lesotho Promise Diamond is a world-renowned diamond discovered in the Kingdom of Lesotho. It is known for its remarkable quality and impressive size, making it one of the most perfect diamonds in the world.
    • Carat Weight: 603 carats
    • Color: D (colorless)
    • Clarity: Flawless
    • Cut: Excellent
    • Shape: Cushion
  8. 8

    The Golden Jubilee Diamond

    Gabriel Tolkowsky
    A 545.67-carat brown diamond, it is the largest cut and faceted diamond in the world. It has a unique and rare brown color.
    The Golden Jubilee Diamond is a magnificent diamond that holds the distinction of being the largest faceted diamond in the world. Its unique name was given to commemorate the 50th anniversary of the coronation of King Bhumibol Adulyadej of Thailand. The diamond is renowned for its exceptional size, exquisite cut, and extraordinary color.
    • Weight: 545.67 carats
    • Color: Fancy Yellow-Brown
    • Cut: Fire-Rose Cushion
    • Clarity: Unknown
    • Origin: South Africa
  9. 9
    A 203.04-carat diamond, it is one of the largest and most perfect diamonds ever found. It has a unique and rare color and clarity.
    The Millennium Star Diamond is a flawless pear-shaped diamond renowned for its breathtaking beauty and rarity. It is considered one of the most perfect diamonds ever discovered.
    • Carat Weight: 203.04 carats
    • Color: D (Colorless)
    • Clarity: Internally Flawless
    • Cut: Excellent
    • Shape: Pear
  10. 10

    The Steinmetz Pink Diamond

    The Steinmetz Diamond Group
    A 59.60-carat pink diamond, it is the largest known pink diamond in the world. It has a unique and rare color and was once owned by the Steinmetz Group.
    The Steinmetz Pink Diamond is one of the most exquisite and rare diamonds in the world. It is a high-quality pink diamond renowned for its striking color, exceptional cut, and flawless clarity. Its captivating beauty and rarity make it a highly sought-after gemstone for collectors and connoisseurs.
    • Carat Weight: 59.60 carats
    • Color: Fancy Vivid Pink
    • Cut: Modified Heart-shaped
    • Clarity: Internally Flawless
    • Origin: South Africa

Missing your favorite diamond?


Ranking factors for perfect diamond

  1. Cut
    The cut of a diamond determines how well it has been shaped and proportioned to maximize its brilliance, fire, and scintillation. A well-cut diamond reflects light beautifully and appears very sparkly.
  2. Clarity
    Clarity refers to the presence (or absence) of inclusions and blemishes in the diamond. A high clarity grading indicates that the diamond has fewer imperfections and is more valuable.
  3. Carat Weight
    Carat weight measures the size of the diamond. Larger diamonds are more rare and generally more valuable, but size should be considered alongside the other factors to determine a diamond's true worth.
  4. Color
    The color of a diamond refers to its level of transparency and absence of color. A perfect diamond would be completely colorless, graded as "D" on the GIA scale. As you move down the scale, diamonds may have a yellow or brown tint, which can decrease their value.
  5. Polish
    Polish refers to the quality of the diamond's surface and affects its overall appearance. A well-polished diamond will have a more lustrous and shiny appearance.
  6. Symmetry
    Symmetry is the uniformity and balance of the diamond's facets. A diamond with good symmetry will have properly aligned facets and even proportions, giving it an optimal appearance.
  7. Fluorescence
    Fluorescence refers to the diamond's ability to emit a glow when exposed to ultraviolet light. In general, a diamond with no or faint fluorescence is more desirable.
  8. Certification
    Ensure that the diamond comes with a certification from a reputable grading lab, such as the GIA or AGS. This provides an objective assessment of the diamond's characteristics.
  9. Price
    The price of the diamond should be considered alongside the other factors to ensure that it represents a good value for the quality, rarity, and beauty of the gemstone.

About this ranking

This is a community-based ranking of the most perfect diamond. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or diamond is missing, feel free to help improve the ranking!


  • 195 votes
  • 10 ranked items

Voting Rules

A participant may cast an up or down vote for each diamond once every 24 hours. The rank of each diamond is then calculated from the weighted sum of all up and down votes.


More information on most perfect diamond

Background Information: Diamonds are undoubtedly one of the most precious and sought-after gemstones in the world. They are not only a symbol of love and commitment but also a valuable investment. However, not all diamonds are created equal. In fact, the rarity and value of a diamond are determined by a combination of factors, commonly referred to as the "Four Cs" - carat weight, cut, color, and clarity. When it comes to the most perfect diamond, experts agree that a flawless diamond with perfect color and cut is the pinnacle of diamond excellence. A flawless diamond is one that has no visible inclusions or blemishes when viewed under 10x magnification. The color of a diamond is also a crucial factor, with the most valuable diamonds being colorless or near-colorless. Finally, the cut of a diamond determines its brilliance and fire, with the most perfectly cut diamonds reflecting light in a way that maximizes their beauty. In short, the most perfect diamond is a rare and valuable gemstone that embodies the highest standards of beauty, rarity, and quality.

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