Diamond market crash is Africa’s opportunity, not its crisis – M'zée Fula Ngenge

Global natural diamond supply is forecast to fall below 95 million carats this year, the lowest since 1987. For Dr. M'zée Fula Ngenge, chairperson of the African Diamond Council (ADC), this is not a death knell but a clarion call. In an exclusive...

Yesterday

Tracr passes 5 million rough diamonds milestone as De Beers expands provenance push

De Beers Group's blockchain-enabled traceability platform Tracr reached a significant milestone in 2025, with more than 5 million rough diamonds individually scanned and registered, up from 2.8 million cumulative registrations reported in 2024. The...

28 september 2026

South African diamonds head to Hong Kong: SDT partners with BRINKS for JGW 2026

South Africa’s State Diamond Trader (SDT) has confirmed the country's participation in Jewellery & Gem World Hong Kong (JGW) 2026 through a partnership with BRINKS. SDT marketing and communication manager Tsholofelo Gopolang Tselapedi...

14 september 2026

David Benderly: PermaScribe seeks to put trust mark on diamond table, not just girdle

In this interview with Rough & Polished’s Mathew Nyaungwa, PhotoScribe Technologies president and chief executive David Benderly explains how PermaScribe differs technically from conventional laser inscription, its potential to strengthen security, and...

31 august 2026

The great reset: Paul Zimnisky on supply catharsis, De Beers' bargain and the case for natural diamonds

The natural diamond industry is in the throes of its most profound reset in a generation. Supply is plunging to its lowest level since 1987 and De Beers—once valued at over $9 billion—is reportedly being sold for as little as $1 billion.
Lab-grown...

10 august 2026

The Earth slowing down its rotation due to global warming

04 april 2024

Researchers from the United States have published an article in the journal Nature on how climatic processes affect the angular velocity of the Earth, which determines the duration of the day and the astronomical year.

The melting of ice in the Arctic and Antarctic seem to affect the rotation of the planet, slowing it down, aif.ru reports.

The melting of the ice caps in Greenland and Antarctica led to a decrease in the mass of the planet's poles, and the level of the world's oceans rose, which affected the speed of rotation of the Earth.

"Enough ice has melted to shift the sea level so much that we can actually see the effect of this on the Earth's rotation speed," says the study's author, a geophysicist from the Scripps Institution of Oceanography (USA) Duncan Agnew.

For his part, Leonid Zotov, professor at the Moscow Institute of Electronics and Mathematics, Doctor of Physico-Mathematical Sciences, believes that although the calculations explaining the acceleration or deceleration of the Earth's rotation include melting glaciers, they do not play a significant role in this.

According to the scientist, this is based on some other phenomena - either occurring in the bowels of the Earth, or connected to an influence from the Moon.

Alex Shishlo for Rough&Polished