Gemstone with dimensions of 40x39x23 mm and a weight of 232.4 carats was recovered at the processing plant №12 of Udachny mining and processing division of ALROSA in October 2019.
This unique diamond was recovered due to x-ray luminescence sorter models LS-20-05N for primary recovery and LS-50-05 for concentrate retreatment by Bourevestnik.
At present, more than 90 x-ray sorters are widely used at site since early 2000s.