- Thumbnail, 2.0 x 1.8 x 1.5 cm
- N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
A SUPERB N'Chwaning II Mine thumbnail. A gemmy, lustrous and striated, sharply hexagonal, light yellow ettringite crystal is very aesthetically attached to calcite matrix. Choice material from the George Elling Collection.