Executive chairperson Mike Houston said on Friday that the discovery was “exceptional”.
“To put this into perspective, given the average engagement ring weight in the UK is 0.6 ct, a 12.6 ct diamond is considered exceptional. We are hopeful that the recovery of this diamond marks the start of mining better quality diamonds, having worked through a difficult area in recent months,” he stated.
http://www.miningnewspro.com/en/News/609609/BlueRock recovers 12.6 ct diamond from Kareevlei