Rare old LEAD PIPE SPRINGS Blue Agate Geode or Thunderegg Mojave Desert California no longer dug, closed locality. faced/sawn ROUGH, not polished. Shown both dry and wet in the photos. This is part of a military range now since the 1950s or 60s, and an extinct material. Classic, excellent pieces- faced halves, brick red matrix with blue agate chalcedony.