Africa-focused Gem Diamonds has found a 125 carat rough stone at its Letšeng mine in Lesotho, the miner’s second rock over 100 carats mined this year.
The company, known for the recovery of large, high quality stones in 2020, has seen output of high quality diamonds surpassing the 100 carat mark become less frequent over the past year.
In 2021, Gem Diamonds found only six of such diamonds at Letšeng, compared to the 16 it discovered in 2020.
The find comes as prices for small diamonds have jumped about 20% since the start of March, as cutters, polishers and traders struggle to source stones outside Russia.
State owned Russian miner Alrosa, the world’s top diamond producer by output, was hit with US sanctions following Moscow’s invasion of Ukraine.
Higher prices for lower end stones are good news for miners, but not a game changer, experts say. While every mine is different, a general rule is that 20% of production the best stones account for about 80% of profits.
Since acquiring Letšeng in 2006, the company has found more than 60 white gem quality diamonds over 100 carats each, with 16 of them recovered last year. At an average elevation of 3,100 metres (10,000 feet) above sea level, Letšeng is also one of the world’s highest diamond mines.
Gem Diamonds’ revenue in Q1 2022 (ending March 2022) has gone up 4% quarter-on-quarter and 19% year-on-year to $52.1 million, IDEX Online reports.
The miner, which owns 70% of the Letseng mine in Lesotho, sold 28,461 carats during the quarter – a rise when compared to the 24,790 carats it sold in the previous quarter. However, prices fell from $2,018 to $1,831, according to the report.
Clifford Elphick, Gem Diamonds’ CEO, said: “We remain confident about the outlook for diamond prices, particularly for Letseng’s large high-value diamonds with an average price of $1,831 per carat achieved during the period. Prices achieved on a like-for-like basis continued the largely upward trend from 2021.”
Star Diamond has completed a study into the abundance of Type IIa diamonds in parcels recovered from the Early Joli Fou geological units at the Orion North (K120, K147 and K148) and Taurus kimberlites (K118, K122 and K150).
The pipes are located within the Fort a la Corne diamond district of central Saskatchewan, including the Star–Orion South diamond project, on properties held in a joint venture with Rio Tinto Exploration Canada.
These diamond parcels were recovered by Star Diamond between 2006 and 2008 from 120-cm diameter drilling programs. The latest study confirms that unusually high proportions of Type IIa diamonds are present in both the Orion North and Taurus kimberlites.
Of particular note is the high proportion of Type IIa diamonds in the Orion North 147-148 EJF (52%), of which 66% of the 24 stones, 0.66 carats and above are Type IIa. The largest Type IIa diamond identified was a 6.88-carat stone from Orion North (K147-K148 EJF).
Senior technical advisor George Read said that the Type IIa diamonds at Orion North and Taurus are top white in colour, Type IIa diamonds are rare and account for less than 2% of all natural rough diamonds mined from kimberlites. Many high-value, top colour, large specials (greater than 10.8 carats) are Type IIa diamonds, which include all 10 of the largest known rough diamonds recovered worldwide.
The study also confirms and augments an earlier study of Type IIa diamonds being present in the Fort a la Corne kimberlites with Star (26.5%) and Orion South (12.5%).
A target for further exploration completed by Star Diamond in 2014 estimated that between 881 million and 1.04 billion tonnes of the major EJF units, containing between 46 and 79 million carats, occur within the Orion North and Taurus kimberlite clusters.
Orion North (K147, K148 and K220) alone is estimated to contain between 340 million and 410 million tonnes of EJF kimberlite with an estimated range of grade of 2.75 to 8.37 carats per hundred tonnes.
Petra is to offer a 32.32-carat pink diamond at its first tender of goods from the Williamson mine, in Tanzania following a Covid-enforced closure.
The stone is among 26,000 carats that will be offered in Antwerp from 19 to 26 November. The London-based miner classified Williamson as “an asset held for sale for financial reporting purposes” after a a debt-for-equity restructuring. The open-pit mine was mothballed in April 2020 to “preserve its liquidity, at a time when diamond pricing was impacted by the COVID-19 pandemic”. Operations resumed in Q1 FY 2022.
The Hero Diamonds from the 2021 Argyle Pink Diamonds Tender
Rio Tinto’s final Argyle Pink Diamonds Tender collection of rare pink, red, blue and violet diamonds is being showcased to connoisseurs, collectors and luxury jewellers in Antwerp, Belgium.
The Argyle Pink Diamonds Tender, an annual invitation-only event for the past 38 years, is widely considered to be the most anticipated diamond sale in the world, showcasing the pinnacle of Argyle’s production to an exclusive group of collectors, diamond connoisseurs and luxury jewellery houses.
Mining ceased at Argyle on 3 November, 2020 and the 2021 Argyle Pink Diamonds Tender is the final collection of the rarest diamonds from the final year of Argyle operations.
Patrick Coppens, General manager, Sales and Marketing for Rio Tinto’s diamonds business said “The first Argyle Pink Diamonds Tender was held in Antwerp in 1984 and I am delighted to host the final epic collection in Antwerp. Over the past 38 years Argyle pink diamonds have pushed the boundaries of rarity and value appreciation to new extremes.
“When you consider the number of diamonds presented at the annual Argyle Pink Diamonds Tender since 1984 would barely fill two champagne flutes, you begin to grasp the rarity and the tremendous gravitas of this final collection. Many of the invitees have participated in the annual Argyle Pink Diamonds Tender for more than three decades and across generations, so it is an emotional moment in the history of Rio Tinto’s Argyle Pink Diamonds business and the natural fancy coloured diamond industry.”
Comprising 70 diamonds weighing 81.63 carats, the 2021 Argyle Pink Diamonds Tender has a record number of diamonds larger than one carat. The collection is headlined with Lot Number 1, Argyle Eclipse™, a 3.47 carat diamond that is the largest Fancy Intense Pink diamond ever offered at the Tender.
Titled The Journey Beyond, the 2021 Argyle Pink Diamonds Tender takes its reference from the 1.5 billion year journey from creation to discovery and their remarkable impact on the world diamond and jewellery history. The Tender collection comprises five ‘hero’ diamonds selected for their unique beauty and named to ensure there is a permanent record of their contribution to the history of the world’s most important diamonds:
Lot 5: Argyle Bohème™ 1.01 carat, radiant shaped Fancy Red diamond
Also offered alongside the 2021 annual Argyle Pink Diamonds Tender are 41 lots of carefully curated Argyle blue diamonds, weighing 24.88 carats in total. Titled Once in a Blue Moon, these are the very last blue and violet diamonds to emerge from the Argyle mine.
Both face to face and virtual viewings are being conducted in Antwerp catering for those markets where COVID-19 restrictions prevent travel. Bids close on October 4, 2021.
62.7-carat fancy pink diamond “Boitumelo” in Botswana
Lucara keeps raking in the big diamond finds, this time recovering a 62.7-carat fancy pink diamond from its Karowe mine in Botswana.
It is the largest fancy pink gem to found in Botswana, according to the diamond miner, and one of the largest rough pink diamonds on record in the world.
The stone has been named “Boitumelo,” which means joys in Setswana.
Measuring 26 x 17 x 16 mm, it is described as a high-quality fancy pink Type IIa gem.
Lucara uncovered it from the direct ore milling at the EM/PK(S) unit of the South Lobe, the site of many of its biggest finds.
The company said a 22.21-carat fancy pink gem of similar quality was found during the same production period, as were two more pink gems of similar color weighing 11.17 carats and 5.05 carats.
Asked if those additional small pink diamonds could’ve broken off from the same piece as the 62.7-carat diamond, a company spokesperson said: “As the diamonds all came from a similar production period it may be possible, but we cannot confirm this at this time. Further detailed analysis needs to be carried out to confirm if they did indeed originally stem from one diamond.”
Regarding the find, CEO Eira Thomas said, “Lucara is delighted to announce another historic diamond with the recovery of the Boitumelo, and very pleased to demonstrate the continued potential for large, colored diamonds from the South Lobe production.
“These remarkable pink diamonds join a collection of significant diamond recoveries in 2021 produced from the EM/PK(S), which forms a key economic driver for the proposed underground mine at Karowe.”
A 21.86 carat natural pink diamond named “The Pink Palesa” will be sold by the Bonas Group in Antwerp in July.
Credit: Namakwa Diamonds
The pink gem was discovered on May 18 at the Kao mine in Lesotho one of the few sources of pink diamonds in the world following the closure of the iconic Argyle mine last year. Argyle provided about 90% of the world’s pink gems. Kao is operated and owned by Namakwa through its subsidiary, Storm Mountain Diamonds.
According to the report, Kao has yielded several pink diamonds in the last few years: The 25.97 carat Pink Dawn (2021), the 36.06-carat Pink Storm sold in 2014, the 3.06 carat Purple Princess (2017) and the 29.59 carat Rose of Kao (2018).
The Sakura ring was the star at Christie’s Hong Kong, setting a world-record auction price for a purple-pink diamond.
The cushion-cut, 15.81-carat, fancy-vivid, internally flawless stone sold within its estimate for $29.3 million, or $1.9 million per carat, at the May 23 Magnificent Jewels auction, Christie’s said Sunday. The piece, purchased by a private Asian buyer, was also the most valuable jewel sold at auction so far this year. Overall, the Hong Kong sale raked in $76.8 million, the auction house’s highest total for a jewelry auction in four years.
“We are very excited to have marked another important chapter in jewelry-auction history today, with The Sakura realizing a record-breaking price,” said Vickie Sek, chairman of Christie’s Asia Pacific jewelry department. “The strong sell-through rates and exceptional prices achieved for top-quality colored diamonds and gemstones reflect a robust market demand.”
However, even with the record pricing, the pink diamond still fell short of its $38 million high estimate.
“I would not consider this to be at the lower end of the market price, but there was room for it to go [further] if the current economic stability and situation was better,” Harsh Maheshwari, executive director of colored-diamond dealer Kunming Diamonds, told Rapaport News. “Post-Covid-19, if a similar item were to be auctioned, it would possibly touch, or break, the higher end of the estimated price.”
Meanwhile, The Sweet Heart, a heart-shaped, 4.19-carat, fancy-vivid-pink diamond ring, brought in $6.6 million, or $1.6 million per carat, within its presale valuation.
Other notable items include a necklace with a 50.05-carat, D-flawless, type IIa briolette diamond pendant, which garnered $2.7 million. That price, which comes to $53,399 per carat, was just above its low estimate. A square emerald-cut, 31.17-carat, fancy-vivid-yellow, VS2-clarity diamond ring went for $2.2 million, smashing its high estimate, as did a Cartier necklace with diamonds and five Colombian emeralds weighing a total of 16.43 carats, which achieved $2.1 million.
Overall, Christie’s sold 82% of items on offer at the auction.
A fancy-intense-pink diamond ring with a high estimate of CHF 11 million ($12 million) is set to feature in the Magnificent Jewels sale at Christie’s Geneva.
The oval-shaped, 15.23-carat piece, surrounded by diamonds, will be offered alongside the 100.94-carat Alrosa Spectacle diamond at the May 12 auction, Christie’s said last week.
Other notable items include a heart-shaped, 53.33-carat, D-color, VVS1-clarity, type IIa diamond pendant with a high valuation of CHF 3 million ($3.3 million). A pear-shaped, 141.22-carat, fancy-brown-yellow diamond set in a diamond necklace is also on offer, carrying a high estimate of CHF 2.8 million ($3.1 million).
Meanwhile, a ring featuring a 47-carat, cushion-shaped old mine Colombian emerald surrounded by diamonds will go under the hammer. The jewel, which is from an important private collection, carries a high presale estimate of CHF 1.6 million ($1.7 million).
Christie’s will also sell a rectangular cut-cornered, 8.06-carat, fancy-purplish-pink, VVS2-clarity diamond ring bracketed by tapered baguette-cut diamonds. The piece, created by Boucheron, has a high valuation of CHF 1.5 million ($1.6 million).
Christie’s will preview the items from May 8. The sale will also feature an online component, which will be open for bidding between April 29 and May 10.
A 2.17-carat fancy vivid purplish pink diamond fetched $3.5m at auction, well above its high estimate of $2.5m.
It was the most expensive of a “Perfect Palette” of three colored diamonds that raised a total of $8.4m last week at Christie’s New York April Magnificent Jewels.
The pink diamond (pictured) was a cut-cornered square modified brilliant-cut stone, natural color, SI1 clarity, set with round diamonds in a platinum and 18k yellow gold ring.
A fancy vivid blue cut-cornered rectangular modified brilliant-cut diamond of 2.13 carats, natural color, VS1 clarity, set in a platinum ring with round diamonds, sold for $2.67m (high estimate $3m).
And a fancy vivid orange cut-cornered rectangular modified brilliant-cut diamond of 2.34 carats, natural color, VS1 clarity, set in platinum and 18k yellow gold, sold for $2.19m (high estimate $2.5m).
The sale of over 200 lots – including signed pieces by Belperron, Bulgari, Cartier, Graff, Harry Winston, Hemmerle, JAR, Lacloche, Tiffany & Co., and Van Cleef & Arpels – brought in a total of $35m.
Christie’s said there were bids from 40 countries and 94 per cent of lots were sold.
