Watch a video of this specimen by following the Vimeo link below: https://vimeo.com/1196708740/a6d5a54347 Tsumeb is one of the most mythic localities for the mineral collector. There, the unlikely combination of several geological factors made possible the occurrence of a wide variety of finely crystallized mineral species, to such and extent that this deposit set the highest international standards for several species over the second half of the last century. Among these, dioptase is among the greatest classics, as Tsumeb is ranked among the most iconic localities for this species! Here is a superb miniature of dioptase from the locality, showing excellent colour and lustre!