in ArtBeautiful Skull Carved From Single Agate Geode by Seth Sebastian 2014-02-01, 12:20 PMupdated 2017-04-28, 11:47 AM This incredible life-size skull featured over on Skullis was carved using an agate and amethyst geode. It measures 7.6″ long from front to back and is just gorgeous. Weighing just over eight pounds. This skull was sold to some lucky soul for $1,560. Via laughingsquid.com