We can only agree with the others reviewers - this gallery is an absolute must for anyone interested in minerals and fossils.
The collection of over 3,000 specimens is organised by regions or countries including Bohemia, Slovakia, Russia, Europe, Asia, North and South America, Australia and Africa.
We spent over three hours there in late May, and could easily have stayed longer. The staff spoke English and were very helpful.
Whilst there is a shop attached to the gallery, the prices appeared higher than those you find at mineral fairs.