Arizona North and Central Americas United States 4556 Dioptase, Price Mine, Mohave Co., Arizona, USA October 5, 2019
Europe Germany 4807 Duftite, Katharina I Mine, Imsbach, Winnweiler, Palatinate, Rhineland-Palatinate, Germany October 5, 2019
Arizona North and Central Americas United States 6088 Dioptase, Harquahala Mine, Harquahala Mountains, La Paz Co., Arizona, USA October 2, 2019
California North and Central Americas United States 5597 Dioptase, Blue Bell Mine (Blue Bell claims; Hard Luck Mine; Hard Luck claims; Atkinson), Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort), Soda Mts, Silver Lake District, San Bernardino Co., California, USA October 5, 2019