Iridescent Goethite Geode Price: $65.00 ID Code = GeoGeo-0001 - SOLD -   Click on each picture to enlarge   Iridescent goethite geode from south Georgia, USA. As you can see from the pictures, a beautiful smear of iridescent colors on a mirror black surface cover the interior of each geode half. It is amazing that such a beutiful interior exists in a rock with such an ugly exterior. This killer geode measures 8-1/2" in diameter and weights about 10 pounds. Geodes of this fine quality are this are extremely difficult to find in the field and you'd be hard-pressed to find another of its caliber for sale anywhere.