http://b4hntuy3fimfh2227vf4f74emnya7p35i5brtqujs6leqvtclfwvjbqd.onion/doc/physics/diamonds-crookes/The%20Project%20Gutenberg%20eBook%20of%20Diamonds,%20by%20William%20Crookes..html
Diamonds from the drift
fetch about 40 per cent more than those
from Kimberley; taking the yield of the
Kimberley and De Beers mines as worth
all round, large and small, 26s. 6d. a carat,
those from the drift are worth 40s. As a rule the better class of natives—the
Zulus, Matabeles, Basutos, and Bechuanas—when
well treated, are very honest
and loyal to their masters.