Very old large crystal “ball”glass psychic charm from NE farm. +

Found in the outbuilding of my old farm up North over 20 years ago was this large glass?crystal? rock. (There were also some small sealed bottles with residue which we flung out—probably worth a fortune but too late 20 years later.) Exactly what it is I don’t know, it weighs 1 kilo 802 grams, feels like glass or crystal, has bubbles of different sizes in it, and a few little whitish bits on the outside .It is about 5 ½ inches at tallest point and 4 inches at widest point.Definitely NOT a ball but I believe that it can be any shape for scrying? PS tin of cocoa is to give you idea of how BIG this is! 25 or nearest please.