'Mother Nature's Secrets', on the lower floor, proudly exhibits one of the finest private collections of minerals, predominately from Brazil, Portugal, South Africa, Zambia, Peru, Argentina and North America. From more than a 1000 specimens, around 700 have been specially chosen for display. Some specimens are displayed in hollows designed to imitate the environment in which the minerals form in the depths of our planet, whilst others are “suspended in air” to give the sensation of a planetary space where rocky masses gravitate freely. Also for your enjoyment is an exhibition of more than 300 semiprecious and precious gems, with a particular focus on diamonds, both rough and cut.