ALROSA announced yesterday that it had recovered a unique rough diamond weighing 191.46 carats at the Udachnaya kimberlite pipe in mid-January 2019. The stone had dimensions of 40x31x20 mm and was extracted at the processing plant â„–12 of Udachny mining and processing division. The mined diamond is transparent, with a slight yellowish tinge.

The rough diamond is being sent to the United Selling Organisation for a detailed study and evaluation.

The last time a rough diamond of a comparable size was found at the company’s deposits was more than 2.5 years ago.

“Such large gem-quality discoveries, weighing more than 100 carats, confirm that there are many unique precious minerals in the reserves of the Udachnaya kimberlite pipe. Since the beginning of the development in 1967, the pipe has given hundreds of large diamonds to our company. In the near future, this rare specimen will go to the United Selling Organization for the detailed study and evaluation,” Evgeny Agureev, Member of the Management Board, Director of the United Sales Organization at ALROSA, said.

The Udachnaya pipe was discovered in 1955; it is among the largest primary diamond deposits both in Yakutia and abroad.

Pic courtesy: ALROSA