Czechoslavakian colored stone brooch

I am trying to find out the history and value of this brooch. I have had this piece about 30 years, my dad bought a box of misc items at an estate sale and in this piece was one of the jewerly items.
I think the pink center stone might be pink cat's eye and the other stones are probably colored rhinestones. The setting is probably brass. The flower settings are very detailed. The only marking I can find is on the back and says. "made in Czechoslavakia".