Africa Tanzania ncat JP3703 Quartz (Amethyst) with inclusions, Umba River (Umba Valley), Tanga Region, Tanzania October 8, 2019
Australasia Australia Queensland 2186 Goethite, Quartz (Amethyst), Blue Hills, Agate Creek, Queensland August 27, 2023
Australasia Australia Northern Territory 3395 Quartz (Amethyst), Ilparpa, Alice Springs, Northern Territory October 3, 2019
