Aim- and BSE-listed Botswana Diamonds has recovered 223 microdiamonds from 160 kg of kimberlite drill core from the Frischgewaagt project, in South Africa. The diamond grade is estimated to be in a range of 20 carats per hundred tons (cpht) to 270 cpht at a bottom cut-off of 0.6 mm, with the largest stone being a white transparent crystal diamond falling in the -1.18+0.85 mm sieve.
