Photo by Agate Lady from http://agatelady.blogspot.com/2009/06/rain-flower-agates.html

Chinese rain flower agates are found in Nanijing, China in the bed of the Yangtze River.  They can also be called Yuhashi or Yuhua stones.  The river polishes them smooth, and people often display them in a small bowl of water to bring out the colors.  They look very similar to Lake Superior agates, and like Lake Superior agates, they are named after where they came from.