Silica-filled Vicarya

• Silica-filled Vicarya
  Locality: Tsukiyoshi, Mizunami-shi, Gifu-ken, Japan
  
  Here are beautiful spiral stones. What do these stones bring to your mind? If you come up with “fossil of spiral shell”, you sure are a knowledgeable person. But, maybe you are a little bit unimaginative. Your Kiseki Degree is 30%!
  If you think of “soft ice cream”, you are a person of common sense. You have enough flexibility. Your Kiseki Degree is 70%!
  If you imagined “dropping of the moon”, you are a real Kiseki-person. Your mind is full of wonderful imagination. Your Kiseki Degree is 100%! From the ancient time, these stones have been passed down as droppings of the moon.
  Of course, they are not droppings of the moon in reality. They are inner cast of spiral shells called Vicarya. Usually, opal or agate is filled inside.