Luulyo 13, 2021, cilmi-yaqaannada caanka ah ee Manas Banerjee iyo Richard Capeta iyo kooxdoodu waxay ka heleen 7,525-carat sumurud ceeriin ah macdanta Kagem ee Zambia waxayna u bixiyeen Chipenbel Emerald, oo macnaheedu yahay "wiyisha."
Tiir 5,655 karat ah oo sumurud libaax ah iyo 6,225-carat emeralds maroodi ah ayaa sidoo kale laga helay macdanta.Saddexdan dhagxaan ee qalafsanna waa saddexda ugu sarreeya ee emerald ee ugu sarreeya macdanta.
Waqtiga boostada: Abriil-19-2022