This Flint or chert nodule might actually be chalcedony. It is reddish brown on the outside and toffee coloured inside. It is a perfect weekend nodule with a thumbprint sized Dent in it. I can't explain why I like this so much.

We find these ourselves down in Ayrshire but it was refreshing to find one in a preloved Crystal collection. It has been washed and sale of this item adds change to the charity jar.