White light view
The minerals, clockwise from the left, are:
Fluorite cube shard - $2 at a rockshop.
Desert rose - chalcedony with uranyl activator, collected on a hill East of Oatman, AZ.
Terlingua type calcite shard - $1 at a Tucson gem show booth.
Willemite on calcites - collected from mine tailings used for railbed - Ogdensberg, NJ.
Fluorite on Calcite - Castle Dome, AZ - 1$ find in a box of misc at a local mineral show.