The artisan tool is accessible by clicking on Artisan-Tool in the Crafting menu. Here you can improve the four properties precision, masterpiece (sun symbol), speed and reputation. Precision increases the quality of goods and their value, a masterpiece is particularly well made (the value of the items is between 0 and 4000 points) and has a 20% higher sales value, speed reduces the production time for making goods and reputation reduces the time for selling a good.
Each artisan tool can be improved by shards and gold (depending on the level of improvement).
The maximum possible improvement in the tool is increased by Increase max values using jewels.