Explore a fascinating compilation of the rarest and most valuable diamonds in existence. From enigmatic red diamonds to historically significant vibrant colored gems, this list delves into their origin, unique characteristics, and historical impact. Discover why these geological wonders are so coveted and what makes them truly exceptional in the world of gemology. Ideal for jewelry enthusiasts and collectors.
Exceptionally rare
(+4)
The Oppenheimer Blue Diamond is a 14.62-carat Fancy Vivid Blue diamond, the largest of its kind to appear at auction until its sale. Its exceptional color and size, coupled with its record-breaking price of $57.5 million in 2016, establish it as one of the most valuable and rare gems globally.
Rare 10.38 carat diamond
(+2)
This diamond is an exceptional specimen due to its impressive 10.38-carat size and rare fancy purple-pink color. Its value is further enhanced by its documented royal lineage, which adds a historical and mysterious component to its already remarkable beauty.
Significant and historical
(+4)
The Allnatt Diamond is a 101.29-carat Fancy Vivid Yellow diamond, renowned for its exceptional size and intense golden yellow color. Its GIA classification as Fancy Vivid Yellow and its historical mounting by Cartier make it a highly valuable and unique piece in the world of gemstones.
Exceedingly rare class of coloured diamonds
(+4)
This diamond is a 27.64-carat Fancy Vivid Blue, a color and size classification that makes it extremely unusual. Its origin in South Africa's Premier Mine, known for producing blue diamonds, adds to its prestige and rarity in the global gem market.
Fourth-largest rough diamond ever found
The Sewelô diamond is an extraordinary find, being the fourth-largest rough diamond ever discovered, weighing 1,758 carats. Its immense size and purity make it an invaluable gem, standing out for its rarity in the world of diamonds.
All the rankings you can imagine
Thousands of verified votes to discover the best. Your vote here counts
Largest natural red diamond ever discovered
(+2)
This diamond is the largest known natural red diamond in the world, a characteristic that makes it exceptionally rare and valuable. Its Fancy Red color is the scarcest hue among all diamonds, underscoring its uniqueness in the precious gem market.
One of the largest cut diamonds in the world
(+4)
The Rock is a 228.31-carat white diamond, renowned as the largest of its kind ever auctioned. Its exceptional size and nearly colorless purity establish it as a gem of extraordinary value and rarity in the global market. It sold for 21.9 million USD in 2022, underscoring its significance and exclusivity.
Features a rare Maltese cross
(+3)
This diamond is notable for its original size of nearly 400 carats and its distinctive Maltese cross inclusion, which gives it a unique visual singularity. Its history is tied to a charitable purpose, having been auctioned to support the Red Cross during World War I, adding historical and humanitarian value to its intrinsic rarity.
Largest gem-quality rough diamond ever found
(+3)
The Cullinan is the largest gem-quality rough diamond ever found, weighing an astonishing 3,106.75 carats. Its unprecedented size and subsequent division into historic gems, such as the Great Star of Africa, make it a unique piece in gemological history.
Rare Type IIb diamond
(+1)
The Hope Diamond is a 45.52-carat blue diamond, the largest blue diamond ever found, renowned for its Fancy Dark Greyish Blue color and antique cushion cut. Its history is riddled with legends of a curse, adding to its mystique and making it one of the most famous and valuable gems globally.
This ranking of the world's rarest diamonds has been compiled through a comprehensive analysis of available information regarding their uniqueness, historical value, and physical characteristics.