Does anyone remember an old novelty rocks and minerals shop?

So this is a bit of a stretch, I don’t know if I’ll be able to get my answer. There used to be a little shop ( if memory serves me correctly just north of the university district) that sold tumbled rocks and minerals. But it wasn’t a regular shop, instead the whole floor was covered in tumbled stones and you had an allotted period of time to pick through the stones and take what you wanted. I think they did birthday parties. Does anybody remember this shop and what it was called? I went there as a kid in the early 2010s. Thank you so much!