ncat VHD10, Duftite, Dioptase, Tsumeb Mine, Tsumeb, Namibia November 17, 2019 Steve Africa Namibia Ex Roger Colling Collection
Arizona North and Central Americas United States ncat JP1096 Dioptase, Christmas Mine, Christmas, Banner Mining District, Gila County, Arizona, USA April 30, 2023
Africa Namibia 5382 Minrecordite, Calcite, Duftite, Tsumeb Mine, Tsumeb, Otjikoto, Namibia September 29, 2019
Arizona North and Central Americas United States 2669 Dioptase, Harquahala Mine, Salome, Arizona, USA October 3, 2019
