RE: Thought the Diamond News29 Aug 2018 23:13
DG1 from Wiki Marange 1 is massive $15bn is understandable - " the Marange field is the largest diamond producing project in the world, estimated to have produced 16.9 million carats in 2013, or 13% of global rough diamond supply. Marange is estimated to have produced 12.0 million carats in 2012, 8.7 million carats in 2011, and 8.2 million carats in 2010.[3] While some diamond mines produce rough valued at over $1000 per carat, average production at Marange is estimated at under $50 per carat.[4]"
Link:https://en.wikipedia.org/wiki/Marange_diamond_fields