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ALROSA Recovers 145-Ct. Diamond

ALROSA estimates the rough diamond at $1 million.
Feb 12, 2013 2:52 AM   By Dilipp S Nag
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RAPAPORT... ALROSA recovered a diamond weighing 145.44 carats, which may be valued at $1 million if it is placed on 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 millimeters, 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 its diamond recovery  and reduce the number of damaged gems extracted. 
Tags: Aikhal Mining and Concentration Mill, Alrosa, diamond, Dilipp S Nag
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