What is the last item in your hand ?? Where did you get these items ?? Its possible they are not stone at all but man ,made materials similar to how counter tops are made !! They can make them look like any stone,, marble, granite ect and are difficult to tell the difference !! Have you done a hot pin test to see if it has a chemical smell or melts a bit ??
Should be a clover and diamond with the heart and spade !!
How big are these items ?? They look like personal ashtrays for a bridge set from the 1950`s or 60`s !!