Category Archives: INDUSTRIAL DIAMONDS

Worlds biggest diamond mine Alrosa has sold $2.5 billion in diamonds so far this year 2017

World’s largest diamond producer by output said market has refound its balance.

Russia’s Alrosa (MCX:ALRS), the world’s top diamond producer by output, said Monday it sold $2.5 billion worth of rough and polished precious rocks from January to June this year.2017

From that total, rough diamonds sales totalled $2.442 billion, and polished ones fetched $54.9 million, the company said.

Last month alone, the miner brought in $365 million in diamond sales — $354 million in rough rocks and $10.6 m. in polished ones.

Alrosa Vice President Yury Okoemov said the company considers the seasonal slowdown of June officially at an end, adding the rough diamond market is back to being balanced.

The company, which is planning to increase production by 6% to 39.2 million carats this year, appointed in March Sergei Ivanov, the son of a close advisor to Russian president Vladimir Putin, as its new president.

Henry Sapiecha

HARDEST MAN MADE DIAMONDS EVER MADE NOW REVEALED IN CHINA

hardest-synthetic-diamond-ever-made-image www.worldwidediamonds.info

Chinese researchers from Yanshan University have created a synthetic diamond harder than its natural counterpart and able to withstand even hotter temperatures.

The team, led by Yongjun Tian, say the new form of diamond could be used to make superior cutting or crushing tools, capable of operate under very extreme conditions.

The resulting diamond has an extremely high hardness of around 200GPa and is stable at temperatures up to nearly 1000°C – 200°C higher than natural diamond.

The group made the diamond by heating carbon onions —concentric fullerene spheres nested within one another— at 2000°C and 25GPa, hundreds of thousands of times the pressure of Earth’s atmosphere. The resulting diamond has an extremely high hardness of around 200GPa and is stable at temperatures up to nearly 1000°C – 200°C higher than natural diamond.

“The scientific community has dreamt of synthesising novel materials harder than natural diamond for decades,” says Tian in an article published this week in the journal Nature.

The usual approach, he adds, is to try and create smaller and smaller grains within the material’s microstructure.

Because of its superior features, the synthetic diamond diamond can be use to manufacture industrial tools or scientific instruments —such as diamond anvil cells— that work at high temperatures.

The team is currently working on reducing the pressure needed to make each diamond by using finer carbon onions, so that they can be more easily manufactured.

Henry Sapiecha

pink diamonds line image www.worldwidediamonds.info