Description
Rough, uncut thunder egg. Pieces vary in size, but approximately 9 x 8 x 7cm (3.5 x 3 x 2.75″). Sold individually. Also sold in bulk 10lb packages here.
They are formed in volcanic ash layers. The inside may be solid or hollow, and usually has chalcedony, agate and/or jasper that formed when the minerals and gases cooled.
