ncat VHD10, Duftite, Dioptase, Tsumeb Mine, Tsumeb, Namibia November 17, 2019 Steve Africa Namibia Ex Roger Colling Collection
Europe Germany 4807 Duftite, Katharina I Mine, Imsbach, Winnweiler, Palatinate, Rhineland-Palatinate, Germany October 5, 2019
Arizona North and Central Americas United States 4987 Dioptase, Bonanza Mine (Harquahala Mine), Bonanza and Golden Eagle Mine group, Martin Peak, Salome, Little Harquahala District, Little Harquahala Mts, La Paz Co., Arizona, USA October 5, 2019
