Black diamond Hmmm…
"The rare black diamond, believed to have been created over 2.6 billion years ago when either a meteorite or an asteroid hit the earth, is predicted to sell for $5m"
https://www.middleeasteye.net/news/enigma-largest-diamond-rare-outer-space-display-dubai
Geology
Liberia is perched on the West African Shield, a rock formation from 2.7 to 3.4 billion
years old.
The Geology of Liberia: a Selected Bibliography of Liberian
Geology, Geography and Earth Science.
This diamond was found 60 miles south ot the Koidu Siberia Leon mine Mcafee posted.