I would really appreciate as much help as I can get with identifying these marbles I have....First, let me explain how & where we came across an overwhelming amount of these unique beauties! They were found deep below the earth's surface, where the oceans tide flows in, high & low, every morning, noon & night swishing& splashing up on & between these 'mounds' of 1000's of these marbles(what I do believe them to be?) filling up the old, tiny, decrepit basement of an abandoned building that has sat on the oceans shore uninhabited & forgotten since the mid 1960's.......
