ncat OS003 Amethyst, Andilamena Quartz Quarries, Andranotokana Massif, Andilamena, Alaotra-Mangoro, Madagascar May 3, 2023 Steve Africa Madagascar Japan Law Twin 19x15x8mm. Click on the image below for a higher resolution version.
Australasia Australia Queensland 2186 Goethite, Quartz (Amethyst), Blue Hills, Agate Creek, Queensland August 27, 2023
Arizona North and Central Americas United States ncat JP1645, Fluorapatite, Quartz, Mn-unknown, San Domingo Wash, White Picacho District, Yavapai Co., Arizona, USA September 23, 2019