Sunday 14 July 2019

Red And Pink Diamonds Are Tendered By Rio Tinto


Rio Tinto displayed 64 diamonds weighing a total of 56.28 carats, all from its Argyle mine site, in the east Kimberley region of Western Australia, the mining giant said today.
The diamonds make up the 2019 Argyle Pink Diamonds Tender.
Rio Tinto highlighted six diamonds all at or under 2.01 carats:
Argyle red diamond
Argyle red diamond
Lot 1: Argyle Enigma™,1.75 carat modified radiant Fancy Red diamond
Lot 2: Argyle Amari™, 1.48 carat heart shaped Fancy Vivid Purplish Pink diamond
Lot 3: Argyle Elysian™, 1.20 carat modified cushion shaped Fancy Vivid Pink diamond
Lot 4: Argyle Verity™,1.37 carat oval shaped Fancy Vivid Purplish Pink diamond
Lot 5: Argyle Opus™, 2.01 carat round shaped Fancy Intense Pink diamond
Lot 6: Argyle Avenoir™, 1.07 carat oval shaped Fancy Red diamond
The mine, nearly four decades old, is nearing its end.
“Rio Tinto’s Argyle mine is the first and only ongoing source of rare pink diamonds in history,” said Rio Tinto Copper & Diamonds chief executive, Arnaud Soirat, in a news release.
“With the lifecycle of this extraordinary mine approaching its end, we have seen, and continue to see, unstoppable demand for these truly limited-edition diamonds and strong value appreciation.”

Red And Pink Diamonds Are Tendered By Rio Tinto


Rio Tinto displayed 64 diamonds weighing a total of 56.28 carats, all from its Argyle mine site, in the east Kimberley region of Western Australia, the mining giant said today.
The diamonds make up the 2019 Argyle Pink Diamonds Tender.
Rio Tinto highlighted six diamonds all at or under 2.01 carats:
Argyle red diamond
Argyle red diamond
Lot 1: Argyle Enigma™,1.75 carat modified radiant Fancy Red diamond
Lot 2: Argyle Amari™, 1.48 carat heart shaped Fancy Vivid Purplish Pink diamond
Lot 3: Argyle Elysian™, 1.20 carat modified cushion shaped Fancy Vivid Pink diamond
Lot 4: Argyle Verity™,1.37 carat oval shaped Fancy Vivid Purplish Pink diamond
Lot 5: Argyle Opus™, 2.01 carat round shaped Fancy Intense Pink diamond
Lot 6: Argyle Avenoir™, 1.07 carat oval shaped Fancy Red diamond
The mine, nearly four decades old, is nearing its end.
“Rio Tinto’s Argyle mine is the first and only ongoing source of rare pink diamonds in history,” said Rio Tinto Copper & Diamonds chief executive, Arnaud Soirat, in a news release.
“With the lifecycle of this extraordinary mine approaching its end, we have seen, and continue to see, unstoppable demand for these truly limited-edition diamonds and strong value appreciation.”

Red And Pink Diamonds Are Tendered By Rio Tinto


Rio Tinto displayed 64 diamonds weighing a total of 56.28 carats, all from its Argyle mine site, in the east Kimberley region of Western Australia, the mining giant said today.
The diamonds make up the 2019 Argyle Pink Diamonds Tender.
Rio Tinto highlighted six diamonds all at or under 2.01 carats:
Argyle red diamond
Argyle red diamond
Lot 1: Argyle Enigma™,1.75 carat modified radiant Fancy Red diamond
Lot 2: Argyle Amari™, 1.48 carat heart shaped Fancy Vivid Purplish Pink diamond
Lot 3: Argyle Elysian™, 1.20 carat modified cushion shaped Fancy Vivid Pink diamond
Lot 4: Argyle Verity™,1.37 carat oval shaped Fancy Vivid Purplish Pink diamond
Lot 5: Argyle Opus™, 2.01 carat round shaped Fancy Intense Pink diamond
Lot 6: Argyle Avenoir™, 1.07 carat oval shaped Fancy Red diamond
The mine, nearly four decades old, is nearing its end.
“Rio Tinto’s Argyle mine is the first and only ongoing source of rare pink diamonds in history,” said Rio Tinto Copper & Diamonds chief executive, Arnaud Soirat, in a news release.
“With the lifecycle of this extraordinary mine approaching its end, we have seen, and continue to see, unstoppable demand for these truly limited-edition diamonds and strong value appreciation.”
Source: DCLA

Red And Pink Diamonds Are Tendered By Rio Tinto


Rio Tinto displayed 64 diamonds weighing a total of 56.28 carats, all from its Argyle mine site, in the east Kimberley region of Western Australia, the mining giant said today.
The diamonds make up the 2019 Argyle Pink Diamonds Tender.
Rio Tinto highlighted six diamonds all at or under 2.01 carats:
Argyle red diamond
Argyle red diamond
Lot 1: Argyle Enigma™,1.75 carat modified radiant Fancy Red diamond
Lot 2: Argyle Amari™, 1.48 carat heart shaped Fancy Vivid Purplish Pink diamond
Lot 3: Argyle Elysian™, 1.20 carat modified cushion shaped Fancy Vivid Pink diamond
Lot 4: Argyle Verity™,1.37 carat oval shaped Fancy Vivid Purplish Pink diamond
Lot 5: Argyle Opus™, 2.01 carat round shaped Fancy Intense Pink diamond
Lot 6: Argyle Avenoir™, 1.07 carat oval shaped Fancy Red diamond
The mine, nearly four decades old, is nearing its end.
“Rio Tinto’s Argyle mine is the first and only ongoing source of rare pink diamonds in history,” said Rio Tinto Copper & Diamonds chief executive, Arnaud Soirat, in a news release.
“With the lifecycle of this extraordinary mine approaching its end, we have seen, and continue to see, unstoppable demand for these truly limited-edition diamonds and strong value appreciation.”
Source: DCLA

Thursday 11 July 2019

Will Gemologists Survive Automation?


Amid the tech boom that is shaping the diamond industry, a growing number of companies are challenging the grading laboratories, arguing that assessing the 4Cs should not be a subjective science.
“Five to 10 years from now, diamond grading won’t be done by gemologists,” claimed Haim Volner, the owner of Shirtal Diamonds, whose subsidiary Shirtal DiaCam is developing an automated solution for grading. “With the progress of artificial intelligence [AI] and deep learning, computers will do the job.”
DiaCam has teamed up with Matrix, an Israel-based software-services provider, to analyze the images of diamonds taken by the DiaCam360 system — a technology that enables a 360-degree view of the diamond.
Tapping its database of “hundreds of thousands” of images allows the platform to learn how to grade the stones, Volner explained in a recent interview at the JCK Las Vegas show.
When compared to the results of grading by the Gemological Institute of America (GIA), DiaCam360 showed 90% accuracy in assessing the color of the stone. DiaCam is confident it can raise that to more than 95% by making minor adjustments from that initial trial, noted Lior Hirsh, DiaCam’s chief operating officer, who is credited with developing the concept.
The company is conducting similar analysis to determine clarity through its deep-learning techniques. It is looking for strategic investors to help market the service and take the project to the next stage.
You need both
Others are also tackling automation in grading, acknowledging that color and clarity provide the biggest hurdles since cut, shape and carat weight have more standardized measured.
Sarine Technologies has developed machines that can determine the color and clarity of a diamond, based on its concept of “repeatability and accuracy” from the analysis of tens of thousands of stones, the company has explained.
Meanwhile, both De Beers and the GIA stressed that it is important to complement the use of technology with the skills and analysis of their grading experts.
“While we have equipment with the ability to automatically grade color, clarity and carat, it is important to remember that every natural diamond is unique and therefore there will always be some stones that require greater analysis by a grading specialist,” explained Jonathan Kendall, president of De Beers Group Institute of Diamonds, which oversees the company’s grading activity. “These specialists are not only vital for grading certain stones, but also for developing equipment that is highly accurate.”
Similarly, the standards set out in the GIA International Diamond Grading System are best applied using a combination of instrumentation and experienced diamond graders who apply those standards daily, stressed Tom Moses, the GIA’s executive vice president and chief laboratory and research officer.
The GIA applies its capabilities to automate grading in other areas. For example, its melee analysis service automatically separates natural melee from potential lab-grown diamonds and simulants, and sorts the natural diamonds by color, the lab explained. Last year, the GIA began a collaboration with IBM to test an application of the tech-giant’s software using AI to predict clarity grades.
Volner differentiates DiaCam, as the company has no ambition to be a lab. Rather, he envisages labs using the technology to provide accurate and more consistent grading results than a gemologist, “who is prone to human error.” It can also be used by manufacturers, dealers or jewelers to produce fast and cost-effective evaluation of the diamond that is compatible with a grading report, the company suggested.
“The idea is not necessarily to replace the labs,” Volner explained. “But [the technology] gives companies access to a gemologist in a machine. Such automation eliminates human error, saves time and money, and improves efficiency.”
Image: Grading experts at a De Beers Group Institute of Diamonds facility. (De Beers)
Source: DCLA

Will Gemologists Survive Automation?


Amid the tech boom that is shaping the diamond industry, a growing number of companies are challenging the grading laboratories, arguing that assessing the 4Cs should not be a subjective science.
“Five to 10 years from now, diamond grading won’t be done by gemologists,” claimed Haim Volner, the owner of Shirtal Diamonds, whose subsidiary Shirtal DiaCam is developing an automated solution for grading. “With the progress of artificial intelligence [AI] and deep learning, computers will do the job.”
DiaCam has teamed up with Matrix, an Israel-based software-services provider, to analyze the images of diamonds taken by the DiaCam360 system — a technology that enables a 360-degree view of the diamond.
Tapping its database of “hundreds of thousands” of images allows the platform to learn how to grade the stones, Volner explained in a recent interview at the JCK Las Vegas show.
When compared to the results of grading by the Gemological Institute of America (GIA), DiaCam360 showed 90% accuracy in assessing the color of the stone. DiaCam is confident it can raise that to more than 95% by making minor adjustments from that initial trial, noted Lior Hirsh, DiaCam’s chief operating officer, who is credited with developing the concept.
The company is conducting similar analysis to determine clarity through its deep-learning techniques. It is looking for strategic investors to help market the service and take the project to the next stage.
You need both
Others are also tackling automation in grading, acknowledging that color and clarity provide the biggest hurdles since cut, shape and carat weight have more standardized measured.
Sarine Technologies has developed machines that can determine the color and clarity of a diamond, based on its concept of “repeatability and accuracy” from the analysis of tens of thousands of stones, the company has explained.
Meanwhile, both De Beers and the GIA stressed that it is important to complement the use of technology with the skills and analysis of their grading experts.
“While we have equipment with the ability to automatically grade color, clarity and carat, it is important to remember that every natural diamond is unique and therefore there will always be some stones that require greater analysis by a grading specialist,” explained Jonathan Kendall, president of De Beers Group Institute of Diamonds, which oversees the company’s grading activity. “These specialists are not only vital for grading certain stones, but also for developing equipment that is highly accurate.”
Similarly, the standards set out in the GIA International Diamond Grading System are best applied using a combination of instrumentation and experienced diamond graders who apply those standards daily, stressed Tom Moses, the GIA’s executive vice president and chief laboratory and research officer.
The GIA applies its capabilities to automate grading in other areas. For example, its melee analysis service automatically separates natural melee from potential lab-grown diamonds and simulants, and sorts the natural diamonds by color, the lab explained. Last year, the GIA began a collaboration with IBM to test an application of the tech-giant’s software using AI to predict clarity grades.
Volner differentiates DiaCam, as the company has no ambition to be a lab. Rather, he envisages labs using the technology to provide accurate and more consistent grading results than a gemologist, “who is prone to human error.” It can also be used by manufacturers, dealers or jewelers to produce fast and cost-effective evaluation of the diamond that is compatible with a grading report, the company suggested.
“The idea is not necessarily to replace the labs,” Volner explained. “But [the technology] gives companies access to a gemologist in a machine. Such automation eliminates human error, saves time and money, and improves efficiency.”
Image: Grading experts at a De Beers Group Institute of Diamonds facility. (De Beers)
Source: DCLA

Tuesday 9 July 2019

World’s biggest diamond producer Alrosa hit by Sino-US trade war



The US trade war with Beijing has wiped out sales targets of the world’s largest diamond producer Alrosa in China and hit purchases by the country’s tourists in the west.
“When there’s any political instability or tensions, luxury goods sales immediately react, including jewellery with diamonds,” chief executive Sergei Ivanov of the Russian diamond miner said in an interview with the Financial Times. 
“We thought our sales growth in China would go up by 2 or 3 per cent, but now the outlook is likely more pessimistic — growth rates will either be neutral or slightly negative.” 
Mr Ivanov has backed a push into China, which analysts expect to drive growth in the diamond market in the next decade along with India, as Alrosa seeks to meet demand from China’s burgeoning middle class. 
The state-owned company, which produces about half the world’s rough diamonds along with De Beers, is attempting to catch up with its rival and has raised China sales from $50m to $200m in recent years. 
But headwinds from the US-China trade war and a broader market slump are hitting the industry’s profits.
Alrosa’s revenue fell 27 per cent year-on-year to Rbs70.5bn in the first quarter of 2019. Anglo American, the owner of De Beers, blamed a 6.3 per cent decline in its most recent sales period last month on a “more challenging environment” in China. 
The industry is also facing a supply glut that has tempered demand for polished stones, which analysts at Russian investment bank VTB Capital expect to decrease by 2 per cent this year and remain poor until 2021. 
Mr Ivanov said Alrosa would continue to favour price over volume despite the struggles. “We could cut the price by 10 per cent and sell everything we have, but we won’t help the market by doing that because it’d lead to prices on diamonds in the midstream falling.”
He predicted that Alrosa’s sales, which fell 38 per cent year-on-year to $988m in the first quarter this year and had continued to slump since, would continue to remain “much worse” than 2018 before normalising in the fourth quarter this year. “In the end, Christmas in the US and Chinese new year in February aren’t going anywhere. There’ll be good demand and the market will normalise,” he said. 
The slump has not deterred Alrosa from seeking new avenues for production, with its existing reserves, mostly located in Yakutia in northeastern Russia, set to run out by 2047. Mr Ivanov said new ones will probably be discovered in the near future. 
Half a world away, Alrosa opened operations in Zimbabwe this year and is increasing its presence in Angola, where it has a stake in Catoca, the world’s fourth-largest mine, and developing the $1.5bn Luaxe kimberlite project, which is expected to be even larger. 
The company has ramped up its African operations even as other foreign nationals have stopped operating or wound down their presences in Zimbabwe and Angola. 
The move comes as Russia has raised its presence in Africa through further investment in raw materials from oil to bauxite, arms sales and security advice.
Alrosa signed its deal to enter Zimbabwe after president Emmerson Mnangagwa visited Moscow this year, ahead of a larger Russia-Africa summit scheduled in Sochi on the Black Sea for October. 
But Mr Ivanov said Alrosa’s interest in the continent was entirely geological. “Reserves in other African countries have all been researched and the chance of finding a large deposit there is close to zero,” Mr Ivanov said. 
Alrosa has also overcome suspicion of Russia to grow its operations in the US, where it has reopened a New York office, increased rough diamond sales, and plans to begin selling polished diamonds.
Mr Ivanov said that 70 per cent of investors in its recent $500m bond issue were western-based, while about half the company’s free float was owned by US entities. 
“Investors don’t bring up sanctions at all any more,” he added. 
Source: DCLA

Petra Sales Up, Prices Down

Petra Diamonds Operations Petra Diamonds reported increased sales for FY 2024, despite weak market conditions. The UK based miner said it ha...