The rock collection
Here are most of my cabinet specimens. The big stuff is sort of scattered around the house.
I don't put labels on them; When visitors want to know what something is, I just tell them.
The cabinet is a cast-off from an old theatre that was revamping some of its lobby; just had to to pick it up and haul it away.
I added LED strip lighting in the back to supplement the fluorescent tube lighting under the front edge, had a couple glass shelves made, and bingo, rock cabinet. :)