Each piece is approximately 1/2" - 1" in size. Individual stone size will vary depending on available inventory.
This size is perfect for a 3 Lb Rock Tumbler
Rock/Mineral Info: Montana agate comes from nearly the entire length of the Yellowstone river. It formed as a result of volcanic activity in the area, especially between Wyoming and Montana. It is an alluvial agate, meaning it is collected from areas that are not the original deposit.
