0982 Sphalerite, Galena, Quartz, Tristate District, USA September 20, 2019 Steve North and Central Americas United States
New York North and Central Americas United States 4239 Quartz, Crystal Grove, St Johnsville, New York, USA October 4, 2019
Australasia Australia New South Wales ncat WD202 Brookite, Quartz, Wallangra, Arrawatta Co., New South Wales November 1, 2021
Africa Tanzania ncat JP3703 Quartz (Amethyst) with inclusions, Umba River (Umba Valley), Tanga Region, Tanzania October 8, 2019
