Anonymous wrote:The worst present I have ever given. We put it in the pavement and it was still so loud. We had to stop tumbling after three days.

http://www.mysticartcreations.net/store.php/MysticArt/pd9170396/mega_crystal_growing_lab_-_8_colors_to_grow_wit_by_national_geographic?gclid=CI7kgMa59NACFYKLswod6i4GXg

I think a crystal growing set is a better gift.