Other

Diamantes más puros del mundo

Discover a fascinating collection of the most exquisite and chemically perfect gemstones Earth has to offer. This list explores the characteristics that define a diamond's purity, from its nitrogen-free composition to its exceptional lack of colour. For gemology enthusiasts and fine jewellery lovers, this guide offers a detailed insight into the rarest and most valuable specimens. Learn about the factors contributing to their high value and the history behind these natural treasures.

327100% verified
  1. 1

    Graff Lesedi La Rona

    327 Global Votes
    • Largest highest color, highest clarity diamond ever certified by GIA

      (+4)

    The Graff Lesedi La Rona is the largest highest colour, highest clarity diamond ever certified by the GIA, weighing 302.37 carats. It is the world's largest square emerald-cut diamond, noted for its exceptional purity and size.

  2. 2

    Golden Jubilee (545 carats)

    0 Global Votes
    • Largest cut and polished gem-quality diamond in the world

      (+2)

    The Golden Jubilee Diamond is the largest cut and faceted diamond in the world, weighing an impressive 545.67 carats. Its sheer size and impeccable cut make it an extraordinary specimen among the purest and most valuable diamonds.

  3. 3

    De Beers Centenary Diamond

    0 Global Votes
    • Exceptional color and clarity

      (+4)

    This diamond is renowned for its exceptional purity and impressive size of 273.85 carats, making it one of the most valuable gems globally. Its insured value of over US$100 million in 1991 underscores its status as a precious stone of unparalleled quality and rarity.

  4. 4

    The Star of Sierra Leone

    0 Global Votes
    • Perfect chemical purity

      (+2)

    This diamond stands out for its perfect chemical purity, being classified as a Type IIa diamond. This category includes less than 1% of all diamonds, underscoring its exceptional quality and rarity in the world of gemstones.

  5. 5

    The Cullinan

    0 Global Votes
    • Largest gem-quality rough diamond ever found

      (+4)

    The Cullinan Diamond is the largest gem-quality rough diamond ever found, notable for its exceptional purity and its classification as Type IIa, a rare designation of chemical purity. Its polished fragments, such as Cullinan I and II, exhibit extraordinary clarity and color, cementing its status as one of the purest diamonds in the world.

  6. All the rankings you can imagine

    Thousands of verified votes to discover the best. Your vote here counts

  7. 6

    Koh-i-Noor

    0 Global Votes
    • One of the largest cut diamonds in the world

      (+4)

    The Koh-i-Noor is a Type IIA diamond, a classification indicating the absence of impurities and placing it among the highest quality and purest diamonds known. Its origin in India's alluvial mines, with records dating back thousands of years, underscores its antiquity and status as a legendary gem.

  8. 7

    The Hope Diamond

    0 Global Votes
    • Among the most extraordinary blue diamonds ever documented

      (+4)

    The Hope Diamond boasts a VS1 clarity, an exceptional grading that places it among the purest diamonds in the world, despite its whitish graining and signs of wear. Its rich, deep blue color saturation and cushion brilliant cut contribute to its extraordinary beauty and gemological value.

  9. 8

    The Lulo Rose

    0 Global Votes
    • Chemically pure

      (+3)

    This diamond is an exceptionally pure specimen, classified as Type IIa, meaning it lacks nitrogen or boron impurities. Its rarity is further emphasized by being the largest pink diamond discovered in the past 300 years, notable for its 170.2-carat size and unique coloration.

  10. 9

    Allnatt Diamond

    0 Global Votes
    • One of the world's most significant and historical Fancy Vivid Yellow diamonds

      (+4)

    The Allnatt Diamond is a 101.29-carat Fancy Vivid Yellow diamond, renowned for its intensely saturated golden color and exceptional purity. Its size and the rarity of its hue establish it as one of the world's most significant and pure gems.

  11. 10

    El Corazón Eterno

    0 Global Votes

    This diamond is renowned for its heart cut, one of the most complex and symbolic cuts, requiring perfect symmetry to achieve its dazzling brilliance. Its history dates back to the Mughal Empire, with an inscription proclaiming “Love is eternal,” which gives it exceptional cultural and historical value. The piece has been part of high jewelry collections, such as Cartier's, highlighting its purity and the artisanal mastery of its cut.

  12. 11

    Sancy

    0 Global Votes
    • One of the most beautiful diamonds in the world

      (+4)

    The Sancy Diamond is a historic 55.23-carat diamond, renowned for its purity and distinctive double rose cut. Its Indian origin and long journey through Mughal emperors and European monarchies make it a gem of immense historical and gemological value.

Frequently asked questions

In this ranking, a diamond's purity is primarily evaluated by its type, with Type IIa diamonds being the purest due to their exceptional optical transparency and absence of nitrogen defects. Clarity and lack of visible inclusions are also considered.
A diamond's purity is determined by its chemical composition and the absence of impurities. Type IIa diamonds, accounting for less than 2% of natural diamonds, are known to be the purest form. Clarity grades, such as Flawless (F) or VVS (Very Very Slightly Included), also indicate purity.
Yes, lab-grown diamonds are chemically identical to natural diamonds, being 100% pure carbon. Therefore, they can be considered for their purity if they meet the quality and optical transparency criteria, such as those grown by CVD (chemical vapor deposition).
An F-Flawless grading means the diamond has beautiful color and no flaws visible under a 10X microscope. It is the highest clarity grade, indicating exceptional purity in terms of inclusions and blemishes.

How we built this ranking and what to consider when choosing

Our ranking of the world's purest diamonds is based on a comprehensive evaluation of their intrinsic characteristics, as described within the industry context. We focus on quality and composition to provide a clear insight into what makes a diamond truly pure.

  • Purity is primarily valued by diamond type, with preference given to Type IIa diamonds, known for being the most chemically pure and optically transparent.
  • Diamond clarity is considered, with the highest grades such as Flawless (F) and Very Very Slightly Included (VVS) indicating greater purity due to the absence of visible inclusions or blemishes.
  • The diamond's origin is taken into account, including both natural diamonds mined from the earth and lab-grown diamonds that are chemically identical and of high purity.
  • Contextual information regarding the size, carat weight, and history of famous diamonds also contributes to their relevance in the purity ranking.
  • Diamonds must be of gem-quality, implying minimal impurities and defects, and high optical transparency.
  • Diamonds classified as Type IIa are prioritized, as they are the purest form of diamond, with an atomic structure free of nitrogen defects.
  • Clarity is a key factor, seeking diamonds with Flawless (F) or Very Very Slightly Included (VVS) grades to ensure the absence of visible inclusions under magnification.
  • Both natural and lab-grown diamonds are considered, provided they demonstrate to be 100% pure carbon and meet the highest standards of quality and purity.