Hi I am new to this forum. I live in Ca and collect minerals, fossils and as an amateur photographer, I am photographing some of my collections.   These photos are of an unopened small geode (3 cm, or 1.25 inches tall). They are all of 1 specimen taken at different angles. Many decades ago I received a bag of small geodes all formed in the same light green volcanic ash. This was among them. No other geodes in the bag had this texture or pattern on the outside. I put it a