The Gallery of Mineralogy and Geology in Jardin des Plantes (Plant Garden) has one of the richest collection of minerals in the world. Fortunately, a permanent exhibition (Tresors de la terre – Earth treasures) exhibits the most precious minerals and stones you could dream off. You will be amazed at the size, shapes and colors of minerals on display. Gallery of Mineralogy and Geology web site. This collection is another reason to visit the Plant Garden and its famous dinosaur collection.