Searching for Treasure

I have swapped my Tuesday and Wednesday photos around.  I can't believe that SandraSuisse and I both bought from the same stall in Covent Garden.   I bought my little rock for my father, many moons ago, as when we used to live in Qatar we used to go looking for geode's every Friday in the winter.   I have never seen another one like this until I saw Sandra's Blip, thank you Sandra for reminding me about this little gem :-) x