An amazing and bizarre specimen of chalcedony with a neat shape from Gobi Desert, China. A scientific study was held in France and it is about to be published. It displays wind and sand shaped chalcedony, so called “ventifact”, with a marvelous shape. The chalcedony forms delicate layers from dark red to yellow and colorless. Displays all over 360 degree. In superb condition. On acrylic base.

Astonishing!