An all-star cast of 10 diamonds weighing a total of 1,453.06 carats yielded $32.5 million at Lucara Diamond Corp.'s "12th Exceptional Stone Tender" last week. The diamonds, which ranged from 40.4 carats to 472.37 carats, were all sourced in 2018 at the famous Karowe Mine in Botswana. The top performer was a 327.48-carat white diamond, […]