WOW! Talk about "fine," this twin of Chinese quality is pound for pound the finest Tsumeb calcite I have ever seen. Small, yes, but just incredible quality. This pristine, matrix specimen was purchased directly from the Zweibels in 1992 and has been since then the finest miniature calcite (or large thumbnail) known to me from Tsumeb (by way of qualifying that statement, which I do believe, I should add..."for my tastes"). 3 x 3 x 2 cm