I will try getting this kick started by saying it is Norwegian. The crest was a state issued one that first appeared as such when it was adopted in 1905. Your pin must date shortly after that year.
Could we see the back? Any markings, pin style, help. I'm thinking jewelry at this point, perhaps the designer borrowed the standing lion, changed the colors? But that is just an uneducated guess at this point. It is a lovely, detailed design - I'm guessing that there is a mark on the back somewhere?