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.
Bulgaria Europe 10059 Sphalerite, Galena, Quartz, Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria October 5, 2019