The Emperor wants to build up his magnificent palace; therefore he
needs a lot of gems, so he buys all which other countries have.
All you need to do in the treasury is to enter how many gems you would like to sell.
The quotation, set by the Emperor, changes every couple of minutes. Price is always based on
how many gems were bought in the past few minutes: the more gems
were bought, the lower the price will be.
The diagram shows the last 400 prices to help you decide when the best time to sell