Amber Free STONE

each server has different special events happening on a regular basis. Watch for any specials on your server. the 5 Daily barbarian attacks can give you 1 free amber stone, you just have to hit a village that has not already been hit. This is how I get amber stones, until a special event happens. Good luck

and do not play them in roulette

yes, the roullette wheel (Tzolkin Wheel) is a big waste of Amber Stones. It is nice to get the extra bonuses from the wheel, but if you want to build an empire of many cities ~ you will need those amber stones to upgrade your Quetzal Palace and build those cities.