A truly extraordinary diamond has been discovered at the Karowe Mine in Botswana: a half–pink gem weighing an impressive 37.41 carats (7.5g), measuring roughly an inch in length. What sets this jewel apart is the striking boundary between its dusky pink and colorless sections, making it an exceptionally rare find.
Pink diamonds are incredibly uncommon, as they require precise geological conditions to form. Experts believe this new stone could become one of the most significant pink diamonds in history. Oded Mansori, co-founder of diamond-cutting firm HB Antwerp, said: “Its intensely rich coloration is a testament to the geological uniqueness of the Karowe Mine. Our expertise in the manufacturing process will allow us to capture its vibrant color to the fullest.”
The diamond likely began forming over three billion years ago, deep within the Earth under immense heat and pressure, some 150–200km below the surface. While most diamonds acquire color through impurities, pink diamonds are the result of structural deformation—a delicate process that, if overdone, turns them brown. Experts believe the pink portion formed first, followed by the development of the colorless section.
Although other pink-and-colorless diamonds have been found, they are typically much smaller, often under two carats (0.4g). The value of this remarkable gemstone has yet to be determined, but it is expected to rank among the most important pink diamonds ever discovered.
Botswana’s Karowe Mine has previously produced other iconic diamonds, including the 1,758-carat Sewelô, the 549-carat Sethunya, and the 2,488-carat Motswedi—the largest diamond discovered in the past 120 years, surpassing all finds since the famed Cullinan Diamond in 1905.
The newly discovered half-pink diamond is now housed at HB Antwerp, where it will undergo the company’s proprietary transformation process combining artisanal craftsmanship, advanced technology, and full traceability from mine to finished masterpiece.
To put its rarity in perspective, a pink diamond sold at Sotheby’s in New York in 2023 for $34.8 million (£26 million), hailed as the “most valuable and vivid” of its kind. Only about four percent of all pink diamonds reach this level of color intensity, underscoring the exceptional nature of Botswana’s latest find.
