Power Revolution: The Everlasting Diamond Battery

Scientists in the UK have produced the world’s first diamond battery.

They say they’re a safe and sustainable alternative to lithium ion – and will last for an incredible 5,000 years.

They look like a conventional watch battery, but are much thinner and destined to power pacemakers, hearing aids and other healthcare devices, as well as satellites, deep space missions and remote sensors.

Nuclear fusion experts at the government’s UK Atomic Energy Authority (UKAEA), working with the University of Bristol, have developed the ever-lasting batteries using lab grown diamonds and an ultra-thin slice of radioactive material, the isotope known as carbon-14.

Neil Fox of the School of Chemistry at the University of Bristol said: “Carbon-14 was chosen as a source material because it emits a short-range radiation, which is quickly absorbed by any solid material.

“This would make it dangerous to ingest or touch with your naked skin, but safely held within diamond, no short-range radiation can escape.”

The semiconductor properties of the diamond convert the radioactivity into electricity, and it’s so hard that it prevents the radioactivity from escaping.

Source: DCLA

Shutdown for 15,000 Diamond Workers after Boss Suffers Stroke

Maruti Impex, described as one of the world’s biggest manufacturers of small natural diamonds, is halting operations, and has advised its 15,000 workers to seek employment elsewhere.

The company’s founder, Suresh Lakhani, aged 45, suffered a stroke three months ago and remains in a coma.

He’s been the driving force behind the business, which he launched in 1995 when he was just 16 years old. He is said to be the sole decision maker.

The future of Maruti Impex, which operates over 100 units, directly and indirectly, in Surat, Bhavnagar, Amreli, and Junagadh, is now uncertain.

Staff were informed of the closure by audio message, just as diamond units re-open after the Diwali break.

They received salaries up to the holiday, but have been told it’s not clear when operations could resume. The company made mention of “three or four months”.

Family members stepped in short term following Lakhani’s stroke, but have reportedly decided to pause operations because of weak market conditions.

Times of India quotes Dinesh Navadiya, chairman of the Indian Diamond Institute, as saying: “Without his (Lakhani’s) leadership and given the current challenging market conditions, the management is unable to continue operations.”

Lakhani describes himself on LinkedIn as a “self-made entrepreneur and philanthropist who has built a successful global business – “Maruti Impex” from scratch. Maruti Impex is one of the largest companies in the world in cut and polished diamonds.”

Source: DCLA

Botswana holds main interest rate as diamond slump saps economy

Botswana’s central bank left its main lending rate unchanged on Thursday, saying the economy was expected to operate below capacity and not generate demand-driven inflationary pressures because of a slump in the global diamond market.

The Bank of Botswana held its Monetary Policy Rate at 1.90% for the second policy meeting in a row. The rate is based on a seven-day instrument.

“The economy will contract this year primarily due to the downturn in the global diamond market and moderately recover next year,” central bank Governor Cornelius Dekop told a news conference.

The southern African country’s economy is largely dependent on the export of diamonds, and declining earnings from the precious stone have limited government spending.

The central bank also lowered its primary reserve requirement to 0% from 2.5% due to significantly reduced liquidity in the banking system.

Dekop said inflation was expected to average 2.9% in 2024 and 3.3% in 2025, compared with forecasts of 2.8% and 3.1% given at the bank’s previous monetary policy meeting in November.

The Bank of Botswana prefers inflation between 3% and 6% over the medium term. Annual inflation stood at 1.6% in October.

Source: Mining.com

Rio Tinto’s Beyond Rare diamond tender delivers strong results

Diversified mining company Rio Tinto’s second Beyond Rare tender has achieved a strong result, underscoring the rarity and unique provenance of the diamonds on offer.

The auction, which featured some of the world’s most coveted natural fancy coloured diamonds, also showcased the continuing global demand for these rare treasures.

The collection, which comprises 76 diamonds across 48 lots, included an exceptional mix of pink, red, and violet diamonds from the now-closed Argyle diamond mine in Australia, as well as white and yellow diamonds from Rio Tinto’s Diavik mine in Canada.

For the first time, the tender also included seven “Old Masters”, notable historic diamonds from the Argyle mine, further elevating the event’s appeal to collectors.

The tender saw successful bids from 12 bidders spanning Australia, Europe, Japan, Hong Kong, the Middle East, Singapore, and North America.

“The continued strong global interest in highly collectible natural coloured diamonds and the resulting value creation, reflects their stature as works of art to be treasured for future generations,” commented Rio Tinto Minerals CEO Sinead Kaufman.

One standout lot, Lot 40, which featured a 4.04-ct pear-shaped pure white diamond from the Diavik mine, alongside two rare pear-shaped violet diamonds from the Argyle mine, was entrusted to Danish luxury jeweller Hartmanns. The company will work with Glajz, an Argyle Pink Diamonds Icon Partner, to create a one-of-a-kind heirloom jewellery piece from these diamonds.

“I am honoured to be creating a jewelled treasure that reflects each magnificent birthplace of these three esteemed diamonds – Argyle in the remote East Kimberley region of Western Australia and Diavik, just below the Arctic Circle on the frozen edge of the earth in Canada’s Northwest Territories,” said Hartmanns owner Ulrik Hartmann.

Rio Tinto’s Argyle diamond mine, which ceased production in November 2020, was the source of nearly entirely the world’s total supply of rare pink and red diamonds. With 37 years of production, Rio Tinto continues to manage the Argyle Pink Diamonds brand, facilitating sales of remaining inventory and collaborating with prominent jewellers globally.

In addition to owning the Argyle Pink Diamonds™brand, Rio Tinto is the majority owner and operator of the Diavik mine in Canada. The company also continues to explore new opportunities in the diamond sector, with a recent joint venture agreement with Endiama, the national diamond mining company of Angola, to explore the Chiri kimberlite in Angola’s Lunda Sul province.

Source: DCLA

De Beers Cuts Rough Prices

De Beers has reportedly lowered rough prices at its current sight in Gaborone, by as much as 15 per cent in some cases.

It generally uses price cuts only as a last resort, and prefers to offer sight holders the right to refuse or sell back part of their allocation.

Insiders have expressed surprise, and in some cases disappointment at the move, with the holiday buying season now here, and polished prices finally showing signs of recovery.

According to the Bloomberg news website, De Beers “cut prices by 10 per cent to 15 per cent for most of the goods it sells”. It cited anonymous insiders.

De Beers has until now maintained its prices in spite of weak demand, and despite the fact that they are often significantly higher than other sellers.

De Beers no longer publishes Sight revenues, but it is reckoned to have sold no more than $130m at its November Sight (average per 2023 Sight was over $360m).

Last week the company confirmed it would be cutting the number of Sightholders – there are currently 69 – as of 2026 in a move designed to build partnerships that “create value”.

The future of De Beers remains uncertain, with parent company Anglo American planning to sell it off, and Anglo itself again the focus of intense speculation.

Rival miner BHP, which bid unsuccessfully for Anglo six months ago, is now allowed to make a renewed approach.

Source: DCLA

Surge in Gold Prices Hits Luk Fook Revenue

Luk Fook reported a 27 per cent slump in its half-year revenue and the closure of 175 of its 3,500-plus retail jewelry stores amid a surge in gold prices and weak consumer demand.

Earnings for the six months to 30 September were down to $700m. The Hong Kong-based jewelry chain blamed: “various challenges including macroeconomic uncertainties, further rising gold prices and cautious consumer sentiment, coupled with a high base effect”.

Luk Fook said the sharp rise in gold prices – an increase of 23 per cent during the six months – affected consumer sentiment, resulting in a 24 per cent drop in the sales of gold and platinum products. Overall same stores sales were down 34 per cent.

CEO Wong Wai Sheung said: “Although the spike in gold prices may affect sales performance, an increase in profit margin will help mitigate the impact of the decline in sales.

“Sales of the gold products are expected to resume to the normal levels after consumers adapt to the high gold prices.

Gross profits for the six months were down 14 per cent to $228m, net profit fell 56 per cent to $54m.

In March, Luk Fook reported a 28 per cent increase in revenue, driven by a post-Covid influx of tourists.

ource: DCLA

Sanctioned Russia Sells Shares in Angolan Diamond Mines

Angola has announced that Russian shares in two of its major diamond mines have been sold to an Omani-backed fund as a result of international sanctions, a government official said.

Russia’s diamond giant Alrosa was until now a joint owner of Angola’s Catcoa mine, the fourth-largest in the world, and Luele mine, in partnership with the southern African nation’s state-owned company Endiama.

The European Union imposed sanctions on Alrosa, also state-owned, and its CEO in January as part of a ban on diamond imports over the Ukraine war.

This led to “a block on the commercialization” of diamonds from Catcoa and Luele mines, Angola’s Minister of Mineral Resources and Petroleum Diamantino Azevedo said Thursday.

After “negotiations between the Angolan and Russian governments, as well as between Endiama and its partner,” Alrosa has now “officially ceased operating in Angola,” Azevedo said.

The company has been “replaced by Maden International Group, a subsidiary of the Sovereign Fund of the Sultanate of Oman,” the minister added.

He said the transition process was “already underway and should be conducted swiftly.”

The sale comes as the United States President Joe Biden was expected to travel to Angola on Dec. 2.

The visit, his first to Africa, underscores the strategic importance of the oil and mineral-rich country where a massive U.S.-led project is underway to export critical minerals.

Source: Themoscowtimes