3.9" Polished, Jurassic Petrified Tree Fern (Osmunda) Slab - Australia

This is a 3.9" wide, polished slab of a very interesting Jurassic aged, petrified tree fern (Osmunda) from Queensland, Australia. It's is one of the rarest gem quality petrified woods in the world from the Osmundaceae family of tree ferns. It has been polished to a mirror finish on one side and is accompanied with an acrylic display stand.