Large prehnite mineral specimen rough by EarthandSkyAlchemy. This large mineral specimen has clusters of green prehnite bubbles flowing over a charcoal brown basalt base.
The botryoidal prehnite ranges from pale lime green to bluish green with a layer of white edging. This one of a kind collector stone was mined in Connecticut and was part of a vintage collection. It's hard to find specimens of this quality and size today. The large prehnite stone would make a great showpiece in a rock collection or as a display stone in your home, office, or work space.