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…
Europe Germany Type Locality 2234 Faujasite, Opal, Limberg Quarries, Sasbach am Kaiserstuhl, Emmendingen, Freiburg Region, Baden-Württemberg, Germany January 10, 2022
North and Central Americas United States Utah 4691 Pseudobrookite, Topaz, Wild Horse Springs, Thomas Range, Juab Co., Utah, USA November 16, 2018