4628 Dioptase, Kaokoveld Plateau, Kunene Region, Namibia October 5, 2019 Steve Africa Namibia Cluster of emerald-green crystals Click for full sized imageā¦
Arizona North and Central Americas United States 0824 Dioptase, Table Mountain, Arizona, USA September 20, 2019
Arizona North and Central Americas United States 2887 Wulfenite, Dioptase, Mimetite, Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA October 3, 2019