Money in Savage Empire?

What are the emeralds and diamonds for? You can buy things with them! You just have to know who to talk to, because not all people care about these stones. This one guy, Paxaptamac at Tichticatl will trade one emerald for 10 feathers if you ask him. (You get feathers by attacking parrots. Usually you get three feathers per bird, but sometimes more.) Kunawo, the Pindiro shaman trades with you, but only when you go as Triolo. Kunawo trades Triolo 1 yopo, 1 chocolatl, and 1 pinde for 5 flax. Getting flax is easy. All you do is Use a yucca plant.