Strange find?

Question

My dad is a construction worker and he was working with natural stone today and while he was cutting it a strange, round piece fell from within the stone. This is really weird because this is NATURAL stone which comes from-I'm not sure what the word is english but the direct translation is- rock. It has some kind of imprints on it. Specifically, the shape is that of two hemispheres with some area in between-bad description I know. I was just wondering if we should contact someone about this and if so who would we contact? We live in the Toronto area. Thanks.

Answer 1

Go to the Royal Ontario Museum and ask a geologist.

Answer 2

take it to the ROM

Answer 3

Are you talking about a geode?  Not an uncommon thing if its that.  Look here for information:  http://en.wikipedia.org/wiki/Geode