Big break open geodes from Mexico come in 3 sizes, big, extra large and huge. Each comes with instructions on how to break them open and a magnifier for viewing. Choose size from the drop down arrow.
Big, 8" circumference (3" to 3 1/2")
Extra Large, 9" circumference (3" to 3 3/4")
Huge, 9 1/2" to 11 1/2" circumference (4" to 4 1/2")
Ages 8 to Adult. Adult supervision is required!