1385 Opal (Menilitic), Caldes de Malavella, Gerona, Catalonia, Spain September 22, 2019 Steve Europe Spain
California North and Central Americas United States 5311 Plumbophyllite, Opal, Blue Bell Claims (C Adit), Baker, San Bernadino Co., California September 29, 2019
North and Central Americas United States Utah 3654 Weeksite, Opal, Autunite No 8 Claim, Thomas Mountains, Juab Co, Utah, USA April 27, 2023
