100 years ago, the Fourth General Conference on Weights and Measures adopted the Metric Carat as the official measurement for gemstone weights. 50 years ago, production started at South Africa’s Finsch Diamond Mine. Today, Finsch has produced almost 50 million carats, and with a new mine plan set to extend the life of the mine until at least 2030, it looks like there’s a lot more to come from this shining example of the SA mining industry.