World’s Largest Black Diamond Sells for Over $4 Million

A picture taken on January 17, 2022 shows The Enigma, a 555.55 carat black diamond, at Sotheby's in Dubai, UAE. (AFP)
A picture taken on January 17, 2022 shows The Enigma, a 555.55 carat black diamond, at Sotheby's in Dubai, UAE. (AFP)
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World’s Largest Black Diamond Sells for Over $4 Million

A picture taken on January 17, 2022 shows The Enigma, a 555.55 carat black diamond, at Sotheby's in Dubai, UAE. (AFP)
A picture taken on January 17, 2022 shows The Enigma, a 555.55 carat black diamond, at Sotheby's in Dubai, UAE. (AFP)

The rare black diamond known as ‘Enigma’ went under the hammer in London for £3.16 million ($4.3 million). According to Agence France Press (AFP), it’s believed to be the world's largest cut diamond.

The 555.55 carat, 55-faced diamond was sold at an online auction that concluded on Wednesday. The stone is registered as the largest natural diamond in the world as of 2004 by diamond experts GIA and Gubelin, and the largest cut diamond in the world as of 2006 by the Guinness World Record book.

Unlike classic diamonds that are usually unearthed from deep undergrounds, black diamonds are often close to or on the Earth’s surface, which may possibly suggest extraterrestrial origins, stated Sotheby’s auction house.

“It is thought that this specific type of black diamond was created either from meteoric impacts producing natural chemical vapor deposition or an extraterrestrial origin - from supernovae explosions that formed diamond-bearing asteroids which ultimately collided with the Earth,” added Sotheby’s statement.

Today, these diamonds are found exclusively in Brazil or the Central African Republic. Their aggregated structure is the toughest in existence, making them nearly impossible to cut and polish. Enigma was bought in the late 1990s and would have weighed over 800 carats in the rough form. It took over three years to produce this uniquely shaped faceted specimen.

Its shape is inspired by the Middle Eastern palm symbol, a sign of protection and a tool of deflection against the evil eye. However, the highest price of an auctioned diamond remains with the Pink Star diamond, which was sold for $ 71.2 million at a 2017 auction also organized by Sotheby’s, in Hong Kong.



Disasters Loom over South Asia with Forecast of Hotter, Wetter Monsoon

The Himalayan mountain range of Annapurna and Mount Machapuchare (top, C) are pictured from Nepal's Pokhara on June 7, 2025. (Photo by Prakash MATHEMA / AFP)
The Himalayan mountain range of Annapurna and Mount Machapuchare (top, C) are pictured from Nepal's Pokhara on June 7, 2025. (Photo by Prakash MATHEMA / AFP)
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Disasters Loom over South Asia with Forecast of Hotter, Wetter Monsoon

The Himalayan mountain range of Annapurna and Mount Machapuchare (top, C) are pictured from Nepal's Pokhara on June 7, 2025. (Photo by Prakash MATHEMA / AFP)
The Himalayan mountain range of Annapurna and Mount Machapuchare (top, C) are pictured from Nepal's Pokhara on June 7, 2025. (Photo by Prakash MATHEMA / AFP)

Communities across Asia's Himalayan Hindu Kush region face heightened disaster risks this monsoon season with temperatures and rainfall expected to exceed normal levels, experts warned on Thursday.

Temperatures are expected to be up to two degrees Celsius hotter than average across the region, with forecasts for above-average rains, according to a monsoon outlook released by Kathmandu-based International Center for Integrated Mountain Development (ICIMOD) on Wednesday.

"Rising temperatures and more extreme rain raise the risk of water-induced disasters such as floods, landslides, and debris flows, and have longer-term impacts on glaciers, snow reserves, and permafrost," Arun Bhakta Shrestha, a senior adviser at ICIMOD, said in a statement.

The summer monsoon, which brings South Asia 70-80 percent of its annual rainfall, is vital for agriculture and therefore for the livelihoods of millions of farmers and for food security in a region that is home to around two billion people.

However, it also brings destruction through landslides and floods every year. Melting glaciers add to the volume of water, while unregulated construction in flood-prone areas exacerbates the damage.

"What we have seen over the years are also cascading disasters where, for example, heavy rainfall can lead to landslides, and landslides can actually block rivers. We need to be aware about such possibilities," Saswata Sanyal, manager of ICIMOD's Disaster Risk Reduction work, told AFP.

Last year's monsoon season brought devastating landslides and floods across South Asia and killed hundreds of people, including more than 300 in Nepal.

This year, Nepal has set up a monsoon response command post, led by its National Disaster Risk Reduction and Management Authority.

"We are coordinating to stay prepared and to share data and alerts up to the local level for early response. Our security forces are on standby for rescue efforts," said agency spokesman Ram Bahadur KC.

Weather-related disasters are common during the monsoon season from June to September but experts say climate change, coupled with urbanization, is increasing their frequency and severity.

The UN's World Meteorological Organization said last year that increasingly intense floods and droughts are a "distress signal" of what is to come as climate change makes the planet's water cycle ever more unpredictable.