Tsumeb, Nambia is a collectors paradise with plentiful minerals and famous for its combination of minerals as it is for the individual minerals themselves. This combo of Cobaltian Smithsonite and Cerussite is rarely seen together, despite the pretty pair they make. 

The pink of the Smithsonite is due to Cobalt inclusions, and these highly desired pink Smithsonites are almost never seen nestled in with Cerussite.