5553 Topaz, Opal, Conca Cannas quarry, Masullas, Sardinia, Italy March 23, 2018 Steve Europe Italy Prismatic and acicular topaz crystals, with opal coating tridymite, and also capping one of the topaz crystals, from the Conca Cannas quarry, Masullas, Mt. Arci, Oristano Province, Sardinia, Italy. Click for full sized image…
North and Central Americas United States Utah ncat JP1120, Hematite after Garnet, Topaz, Bixbyite, Maynard’s claim (Pismire Knolls), Thomas Range, Juab Co., Utah, USA September 23, 2019
Australasia Australia South Australia 2836 Opal (Shell), Coober Pedy, South Australia October 3, 2019