Note 6 — Chapter VII · GRIQUALAND WEST—WHY WE TOOK IT.
Reading edition
The purchasers were in treaty for De Beer’s farm at the time when the first diamond was found by a lady’s parasol on the little hill where is now the Kimberley mine, and £600 was added to the purchase money in consequence. It is calculated that diamonds to the value of £12,000,000 have since been extracted from the mine.