Enjoy a couple of hours spent at Mina de Gramada - an underground world where you will have a chance to see the beautiful precious stones from South Africa, Argentina, Australia, China, the Congo, India, the United States, Canada, Russia, Peru and Bolivia e Colombia on this special two-hour tour in the underground mine. Learn how minerals are formed, some which measure in weight of over 3 tons! Take in the history and do a little shopping at the conclusion of your tour for a chance to take home a little bit of our culture. Small-group tour is limited to a maximum of 15 travelers for a more personalized experience.