Bruce Gardner uses dirt to create perfectly rounded, slow crafted spheres. Taking around 7 hours to make, he combines dirt with water, adding layer after layer. He finishes them off by painting on a layer of varnish to give the shiny gloss effect.
Pebbled Yellow — From a deposit of yellow soil near Golden, New Mexico.
How to create Hikaru Dorodango: http://www.dorodango.com/create.html