Sure am, I have over 350 specimens.
Recently got into Uraniferous minerals that give lovely loud reports with a Geiger counter.
I have some other VERY rare stuff as well.
I haven't found anything of interest lately, because I am in S.Korea where there is little in the way of mineral deposits.
Yeah I have a couple of crystals, some opal and ruby, pyrite, pertrified wood, quartz, a geode and a fossil of something, most likely some type of fish. Also a rock with some type of natural metal coating on it, I'll get back to you on that no idea what's on it.
A lot of the collection was from my grandfather.
At some point I'm going to have to travel down to Ballarat in Victoria, there's some great places there for finding opal and various gems.