hey everyone; i found this on a very secluded beach in south eastern australia. I cant stop thinking that its some kind of pearl. i have attached two pictures to this to see if anyone has seen anything like it. At first glance in the sand it looked as though it were a marble. after picking it up and cleaning what looked to be corral off it i seen 2 small things inside it. I have looked at hundreds of pictures of pearls and i cant find anything to resemble it. it appears yellow but i think its from the sea and sand. possibly a way to clean it up maybe get it polished?? Well let me know ! thanks a lot!