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…
Australasia Australia Victoria 3547 Namibite, Opal (Hyalite), Morass Creek, Benambra, Victoria October 3, 2019
Australasia Australia New South Wales 5666 Opal, Lightning Ridge, Finch Co., New South Wales May 2, 2020
Colorado North and Central Americas United States 10086 Topaz, Tribute Pocket, Agnus Dei Claim, Pikes Peak, El Paso Co., Colorado, USA January 16, 2022