James writes - These interesting, colorful agates, are actually some type of
petrified wood. I actually started these in my 3 lb barrel and transfered them into my 15 lber before 120/220. They probably stayed in 60/90 for about 10 weeks total. The problem is, that they are so darn brittle. They
shape up nicely though. If anybody can Identify these, please tell me what they are. I want more...