ThunderEgg 6C Nan 6 years ago Collected in Oregon in the 1990s, this stunning 2.25-inch thunderegg nodule is filled by blue and white banded agate that is contained in a blue agate fortress. overall dimensions: 2.25×2.25×1.25 inches Share this:Share on Tumblr Email a link to a friend (Opens in new window) Email Tweet Share on Reddit (Opens in new window) Reddit Share on WhatsApp (Opens in new window) WhatsApp More