Ok, if you have played a bit this game, you will probably like me have a pile of Amber that is useless.
It would be great if there was a way to trade Amber for higher value elements.
5 Amber for 1 Amethyst
25 for 1 Emerald
125 for 1 Ruby
625 for 1 Falling star
In other words trade 5 lower value elements for 1 of the immediate higher value.