Published online by Cambridge University Press: 14 March 2018
There are certain foreign minerals upon which the South African diamond has crystallized readily. The chief of these are garnet, ilmeuite, olivine, and iron-pyrites. In addition, zircon and mica are also probable inclusions. Cognate inclusions are graphite, bert of every kind, and diamond itself of unconformable orientation.
1 Sutton, J. R., Trans. R. Soc. South Africa, 1921, vol. 9, p. 100 Google Scholar