ALROSA Recovers 145-Ct. Diamond

(Rapaport) ALROSA recovered a diamond weighing 145.44 carats, which may be valued at $1 million if it was placed for auction, according to experts from its diamond sorting center.

The world's largest diamond producer by volume stated that the diamond was recovered in late January by its business unit, Aikhal Mining & Concentration Mill, at its factory No. 14.

The diamond was brought to grass from the depths of the Yubileynaya Diamond Pipe and measures 35.0 x 20.0 x 26.0 mm, ALROSA noted.

The company stated that the stone is a crystal in the shape of an octahedron, its transparent with a yellow hue and contains small graphite-sulfide inclusions in its periphery. A production- induced scuff is seen on one of its peaks and one of its facets has a shallow crack, it added.

ALROSA said that through new technology it had managed to improve diamond recovery  and reduce the number of damaged gems.