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Unique Two-Color Diamond Over 37 Carats Discovered in Botswana – Scientists Reveal a Rare Natural Gem Among World’s Largest

Chas Pravdy - 24 October 2025 10:34

Recent news from the world of gemstones reports an extraordinary discovery at the Karowe mine in Botswana.

Geologists found a unique two-color diamond weighing 37.41 carats, combining rare pink and colorless hues.

Experts from the Gemolographic Institute of America state that this precious stone formed in two distinct phases, making it an incredible natural phenomenon.

Initially, the diamond was colorless, but subsequent tectonic movements and high-pressure conditions caused deformation, giving the stone its pinkish coloration and resulting in a cohesive dual-tone gemstone.

Its dimensions are approximately 24.3 by 16 by 14.5 millimeters, making it one of the largest of its kind.

Specialists recognize that two-tone diamonds are very rare, captivating both jewelers and scientists alike.

The formation mechanism of such stones remains a topic of scientific discussion, but their existence constitutes a significant breakthrough for geology and gemology.

The intricate formation conditions and unique crystalline environment contribute to the high value of these diamonds.

Worldwide, only a handful of such specimens have been documented, most weighing less than two carats.

The recent find in Botswana, therefore, stands out as one of the largest ever known.

Among the notable discoveries from this deposit are the world’s second-largest uncut diamond weighing 2,488 carats, known as “Moscavite,” and the pink diamond “Boytumelo.” Furthermore, scientists continue to explore innovative methods for synthesizing rare crystals in laboratories, including hexagonal diamonds, which could surpass traditional cubic diamonds in hardness and durability.

This discovery vividly demonstrates Botswana’s rich natural resources and highlights the priceless value of each new crystal for both scientific advancement and jewelry craftsmanship.

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