LDB’s David Troostwyk: London still has major role to play in global diamond trade

London Diamond Bourse (LDB) President David Troostwyk has had a varied career in the diamond business. David sat down with Rough&Polished to discuss how his love of diamonds started, his career, the state of the diamond trade in the UK and globally...

12 may 2025

David Johnson: De Beers balancing lab-grown and natural diamonds rarity while pioneering ethical transparency

De Beers has been differentiating its lab-grown diamond brand, Lightbox, by positioning it as an affordable, fashion-focused product. Group spokesperson David Johnson told Rough & Polished that this is in contrast to how De Beers promotes natural diamonds...

28 april 2025

Who will bear the cost? Paul Zimnisky weighs in on U.S. jewellery tariff impact

The United States jewellery industry is facing a complex balancing act as new tariffs on diamonds force wholesalers and retailers to decide whether to absorb costs, negotiate with overseas suppliers (particularly India), or pass them on to consumers...

14 april 2025

Thataitsile Moremedi: South Africa's State Diamond Trader providing market access, exposure for nascent manufacturers

Although it is challenging for previously disadvantaged individuals to enter the diamond industry due to the financial barriers, South Africa's State Diamond Trader is providing nascent entrepreneurs with exposure, market access, and other support...

31 march 2025

Dr M'zée Fula Ngenge: KP has failed to adapt to contemporary challenges

The United Nations-backed Kimberley Process (KP), established in 2003 to prevent conflict diamonds from entering the mainstream rough diamond market, has failed to adapt to contemporary challenges, such as state-sponsored violence and sophisticated...

17 march 2025

Gem Diamonds revenue, prices drop due to lower demand

06 february 2024

Gem Diamonds sales dropped 26% in 2023 to $139.4 million as weak demand for rough diamonds forced its average price to weaken.

The diamond junior sold 104 520 carats in 2023 from its Letšeng mine in Lesotho, achieving an average price of $1 334 per carat, a drop of 24% compared to 107,498 carats sold in 2022 for $1 755 per carat.

The highest price achieved in the period was $ 33,745 per carat for a 117.09-carat white diamond that was sold for $4 million, it said.

It produced 32 142 carats in the fourth quarter of 2023, resulting in 109 656 carats recovered for the year from 106 704 carats a year earlier.

The diamond junior said that the ore treated in 2023 dropped to 5 million tonnes from the previous year’s 5.5 million tonnes mainly due to the expiry of the alluvial ventures' processing contract on June 30, 2022, which contributed 400 000 tonnes in that year.

Mathew Nyaungwa, Editor in Chief of the African Bureau, from Cape Town, South Africa, Rough&Polished