Another fine (and rare) Tsumeb specimen out of the Tsumeb collection of Rob Smith - this one, a smithsonite of absolutely REMARKABLE color - or more accurately, luster. The razor-sharp crystals here have this marvelous pearly luster, with a slight green/tan tint in their centers. I am told by some these are lead-rich, as with the plumboan calcites. Never seen proof, though. Most of them are about one centimeter across. The specimen is in great condition. Though Tsumeb, as probably the greatest mineral locality ever, produced a lot of specimens, it is still hard to find unique ones, and they are usually very highly-priced due to that special Tsumeb "aura."