In this tribute, geologist Dr John Bristow, pays his respects to fellow geologist Dr Derek Robinson. Derek Robinson, who had a long and distinguished career at the Anglo American Research Laboratories (AARL) and De Beers and established himself as a leading expert in the field of diamond surface textures and breakage, sadly passed away in Jeffreys Bay on October 30, 2020, at the age of 78 after battling cancer.