From : Schweighausen, Black Forest, Germany
Dr. Liesegang rock is a silificated volcanic rock (Rhyolite) with beautiful reddish-brown and bright
circle structures. The scientist Dr. Liesegang tried to explain the origin of these structures.
This specimen is a polished slab with very decorative reddish lines just like a picture.
Dimensions : 15 x 10.5 x 1 cm
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