This week’s Mineral of the Week (MotW) is dioptase! 20051 Dioptase, Calcite, Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia Subscribe to Dad Dad Diary. Critter Cam - Bin Spider! Ulrichite, Lake Boga Related posts:Re-Unboxing IITurning Red Lead Into Gold PodcastMineral of the Week...Corona Virus Impacting...Darkfield Illumination...