Chalcedony (Var: Petrified Wood)

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An UNUSUAL and UNIQUE fossil from Holbrook, Arizona! This is a vanadium-rich petrified tree limb. The unique green color is caused by vanadium and the bark on both sides is very well preserved. You can see the distinct knots, where smaller limbs were once attached and the corrugated nature of the bark. The piece is probably from the famous Petrified Forest. I have seen only a few of these, and only in old collections, over the last 20 years. This would be one of the better ones.