Holmquistite from
Zimbabwe | |
| Wolfgang Hampel, field studies on drill cores (2017) |
| Sminia, T., & Zwaan, J. C. (2006) Gemmology, geology and origin of the Sandawana emerald deposits, Zimbabwe. Scripta Geol., 131 (2002) Emeralds of the World. extraLapis English 2. Lapis International LLC |