[Zaire] unknown This batch of diamond crystals (100379-100384) was accompanied by no information other than on old exhibition label giving the locality as "Kimberly, S. Africa". However, recent letters found in our archives reveal that these are not South African diamonds, but from Congo (Zaire), which fits in much better with the etched translucent appearance.
Letters dated 1933, (now in the object history file) from WT Gordon , of Kings College, describe specimens matching exactly the sizes and habits of these crystals, and give the locality as Congo, as well as much interesting background information. These were part of a batch of 19 stones made available at a special educational rate Mr. Oppenheimer of the Diamond Corporation, via his friend, Prof. Gordon. The stones were apparently split evenly between Durham (Professor Arthur Holmes), Cambridge (Prof. C.E. Tilley), and the Hunterian. We got these 6 stones for £1 12/- . One letter states: "Please keep the price quiet, for this is far below the price of crushed diamond dust".