Potentially a fair point vis a vis the environment, but it’s not really true of people as far as DeBeers is concerned. I know people that work for them in Botswana and I hear nothing but good things about them as an employer. On the environment, Kimberlites are pretty small and the environmental impact of primary diamond mining isn’t really that great in the grand scheme of things. Take this with a pinch of salt from a guy on the internet sharing some anecdata etc etc.